Class   327	MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS
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SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL

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. (1 indent ) By phase

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.. (2 indent ) Comparison between plural inputs (e.g., phase angle indication, lead-lag discriminator, etc.)

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... (3 indent ) With transducer

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... (3 indent ) With input derived from feedback

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... (3 indent ) With electron space discharge

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... (3 indent ) With reference signal

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.... (4 indent ) With varying frequency

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.... (4 indent ) With sampling

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.... (4 indent ) Uniform pulse waveform

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.... (4 indent ) With transformer

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... (3 indent ) With logic or bistable circuit

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. (1 indent ) By shape

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.. (2 indent ) Slope

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... (3 indent ) With direction (i.e., positive or negative)

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.. (2 indent ) Having feedback

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.. (2 indent ) With reference signal

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. (1 indent ) By presence or absence pulse detection

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.. (2 indent ) Arbitration

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.. (2 indent ) Monitoring (e.g., failure detection, etc.)

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.. (2 indent ) With variable frequency source

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. (1 indent ) By pulse noncoincidence

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. (1 indent ) By pulse coincidence

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.. (2 indent ) Edge sensing

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.. (2 indent ) With uniform spacing

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.. (2 indent ) With pulse width detecting

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.. (2 indent ) With reference

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. (1 indent ) By polarity

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.. (2 indent ) Selection of a particular polarity

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.. (2 indent ) Opposite polarity

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. (1 indent ) By pulse width or spacing

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.. (2 indent ) With shock-excited circuit

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.. (2 indent ) With sampling

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.. (2 indent ) Narrow pulse elimination or suppression

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.. (2 indent ) Separating by duration or gap (e.g., duty cycle, etc.)

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.. (2 indent ) Selection of a particular pulse width

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.. (2 indent ) Comparison by threshold or reference

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.. (2 indent ) With plural paths

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. (1 indent ) By frequency

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.. (2 indent ) Comparison between plural inputs

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... (3 indent ) With synchronous detection

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... (3 indent ) Fixed frequency reference signal

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... (3 indent ) With logic or bistable circuit

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.. (2 indent ) With predetermined frequency selection

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... (3 indent ) Including sampling or reference frequency

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... (3 indent ) Including plural frequency detection

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.. (2 indent ) Frequency detection

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... (3 indent ) With counting

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... (3 indent ) With logic or bistable circuit

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. (1 indent ) By amplitude

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.. (2 indent ) With sensing amplifier

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... (3 indent ) Differential amplifier

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.... (4 indent ) Current mirror

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.... (4 indent ) Having feedback

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....• (5 indent ) Cross-coupled

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.... (4 indent ) With reference signal

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... (3 indent ) With latching type element (e.g., flip-flop, etc.)

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.. (2 indent ) Maximum or minimum amplitude

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... (3 indent ) Employing input compared to output

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... (3 indent ) Employing input compared to reference derived therefrom

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... (3 indent ) By diode-capacitor network

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... (3 indent ) Maximum and minimum amplitude

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.. (2 indent ) Comparison between plural varying inputs

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... (3 indent ) With logic or bistable circuit

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... (3 indent ) Differential input

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.... (4 indent ) Current mirror

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.... (4 indent ) Having feedback

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... (3 indent ) Input provides varying reference signal

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... (3 indent ) With plural paths

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.... (4 indent ) With single output

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... (3 indent ) Three or more inputs

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.. (2 indent ) Input signal compared to reference derived therefrom

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... (3 indent ) Reference derived by feedback

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.. (2 indent ) Input signal compared to plural fixed references

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... (3 indent ) Three or more

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... (3 indent ) With logic or bistable circuit

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.. (2 indent ) Input signal compared to single fixed reference

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... (3 indent ) Reference level crossover detecting

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.... (4 indent ) Zero crossover

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... (3 indent ) Reference determined by threshold of single circuit element

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.... (4 indent ) With transistor

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... (3 indent ) Plural sources of input signal

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... (3 indent ) Temperature compensation

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... (3 indent ) With bridge circuit

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... (3 indent ) Inverting input or output

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... (3 indent ) With transformer

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... (3 indent ) Having feedback

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... (3 indent ) With source as reference

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... (3 indent ) With differential amplifier

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.. (2 indent ) Comparison between two characteristics of an input signal

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.. (2 indent ) Including details of sampling or holding

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... (3 indent ) With bridge circuit

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... (3 indent ) With reference source

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... (3 indent ) Sample and hold

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.... (4 indent ) Having feedback

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.... (4 indent ) With differential amplifier

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.. (2 indent ) With logic or bistable circuit

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. (1 indent ) By separating composite signal

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. (1 indent ) Having selection between plural continuous waveforms

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SIGNAL CONVERTING, SHAPING, OR GENERATING

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. (1 indent ) Converting input current or voltage to output frequency

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. (1 indent ) Converting input frequency to output current or voltage

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. (1 indent ) Converting input voltage to output current or vice versa

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. (1 indent ) Converting, per se, of an AC input to corresponding DC at an unloaded output

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. (1 indent ) Synthesizer

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.. (2 indent ) Having stored waveform data (e.g., in ROM, etc.)

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.. (2 indent ) Having digital device (e.g., logic gate, flip-flop, etc.)

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. (1 indent ) Current driver

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.. (2 indent ) Having semiconductive load

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.. (2 indent ) Having inductive load (e.g., coil, etc.)

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.. (2 indent ) Having capacitive load

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... (3 indent ) Push-pull

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. (1 indent ) Frequency or repetition rate conversion or control

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.. (2 indent ) Of output rectangular waveform

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... (3 indent ) Frequency division

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... (3 indent ) Frequency multiplication

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.. (2 indent ) Frequency division

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... (3 indent ) Having discrete active device (e.g., transistor, triode, etc.)

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.. (2 indent ) Frequency multiplication (e.g., harmonic generation, etc.)

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... (3 indent ) With plural outputs

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.... (4 indent ) Selective

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... (3 indent ) Doubling

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... (3 indent ) With particular tube or distributed parameter element

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. (1 indent ) By periodic switching (e.g., chopper, etc.)

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. (1 indent ) Generating parabolic or hyperbolic output

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. (1 indent ) Generating staircase output

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.. (2 indent ) With differential amplifier

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.. (2 indent ) With rectifying element

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. (1 indent ) Generating sinusoidal output

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. (1 indent ) Generating trapezoidal output

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. (1 indent ) Generating sawtooth or triangular output

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.. (2 indent ) With current source or current mirror

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.. (2 indent ) With distortion control (e.g., linearization, etc.)

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.. (2 indent ) With slope or duration control

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.. (2 indent ) Having digital element

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.. (2 indent ) Having particular delay or sync

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.. (2 indent ) Having feedback

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.. (2 indent ) Having temperature compensation

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.. (2 indent ) Having inductive load

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.. (2 indent ) With amplitude control

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. (1 indent ) Synchronizing

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.. (2 indent ) Reset (e.g., initializing, starting, stopping, etc.)

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... (3 indent ) Responsive to power supply

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.. (2 indent ) Using multiple clocks

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... (3 indent ) Having different frequencies

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... (3 indent ) With feedback

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.... (4 indent ) Phase lock loop

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....• (5 indent ) With charge pump

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....• (5 indent ) With variable delay means

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....• (5 indent ) With digital element

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... (3 indent ) With counter

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... (3 indent ) With choice between multiple delayed clocks

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... (3 indent ) With delay means

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.. (2 indent ) With feedforward

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.. (2 indent ) With feedback

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... (3 indent ) Phase lock loop

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.... (4 indent ) With charge pump

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.... (4 indent ) With variable delay means

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.... (4 indent ) With digital element

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.. (2 indent ) With counter

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.. (2 indent ) With delay means

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.. (2 indent ) Having reference source

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... (3 indent ) By phase

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. (1 indent ) Generating rectangular (e.g., clock, etc.) or pulse waveform having random characteristic (e.g., random width, etc.)

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. (1 indent ) Regenerating or restoring rectangular (e.g., clock, etc.) or pulse waveform

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.. (2 indent ) Having digital device (e.g., logic gate, flip-flop, etc.)

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.. (2 indent ) Having network providing particular mathematical function (e.g., integrator, etc.)

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.. (2 indent ) Having inductive device (e.g., transformer, etc.)

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.. (2 indent ) Having negative resistance device (e.g., tunnel diode, etc.)

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. (1 indent ) Slope control of leading or trailing edge of rectangular (e.g., clock, etc.) or pulse waveform

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. (1 indent ) Output pulses having opposite polarities

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. (1 indent ) Rectangular (e.g., clock, etc.) or pulse waveform width control

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.. (2 indent ) Pulse narrowing

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.. (2 indent ) Pulse broadening

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.. (2 indent ) Duty cycle control

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.. (2 indent ) Having digital device (e.g., logic gate, flip-flop, etc.)

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.. (2 indent ) Having inductive device (e.g., transformer, etc.)

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. (1 indent ) Rectangular (e.g., clock, etc.) or pulse waveform amplitude control

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.. (2 indent ) Gain

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.. (2 indent ) Limiting, clipping, or clamping

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. (1 indent ) Electromagnetic pulse forming

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. (1 indent ) Delay line or capacitor storage element charged or discharged through or by a relaxation oscillator type circuit to form pulse

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. (1 indent ) Delay line or capacitor storage element charges or discharges through a tube to form pulse

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. (1 indent ) Rectangular (e.g., clock, etc.) or pulse waveform generating by conversion from input AC (e.g., sine, etc.) wave

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. (1 indent ) Particular stable state circuit (e.g., tristable, etc.)

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.. (2 indent ) Superconductive (e.g., cryogenic, etc.)

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.. (2 indent ) External effect device (e.g., light, heat, magnetic, or mechanical force sensitive devices, etc.)

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.. (2 indent ) Minority carrier storage effect

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... (3 indent ) Storage diode (e.g., step recovery, etc.)

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.. (2 indent ) With transformer or saturable core device

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... (3 indent ) Blocking oscillator

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.. (2 indent ) Negative resistance transistor (e.g., unijunction, etc.)

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... (3 indent ) Four or more layer device, (e.g., trigistor, etc.)

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.. (2 indent ) Zener or capacitive diode

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.. (2 indent ) Negative resistance diode having "N"-shape characteristic on I-V plot (e.g., tunnel diode, backward diode, etc.)

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.. (2 indent ) Negative resistance diode having "S"-shape characteristic on I-V plot (e.g., four or more layer semiconductor device, etc.)

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.. (2 indent ) Convertible circuit (e.g., bistable to monostable, D-type to T-type, etc.)

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.. (2 indent ) Initializing, resetting, or protecting a steady state condition

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.. (2 indent ) Circuit having only two stable states (i.e., bistable)

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... (3 indent ) Dynamic bistable

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.... (4 indent ) Complementary clock inputs

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... (3 indent ) Master-slave bistable latch

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.... (4 indent ) Including field-effect transistor

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.... (4 indent ) Including multi-emitter or multi-collector bipolar transistor

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... (3 indent ) Using hysteresis (e.g., Schmitt trigger, etc.)

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.... (4 indent ) Including field-effect transistor

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... (3 indent ) Including diverse solid state devices (e.g., FET/bipolar, etc.)

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... (3 indent ) Including field-effect transistor

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.... (4 indent ) Including enhancement and depletion devices

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.... (4 indent ) CMOS

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....• (5 indent ) With clock input

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.... (4 indent ) With clock input

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....• (5 indent ) Plural independent clock inputs (i.e., non complementary )

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... (3 indent ) Complementary transistors

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... (3 indent ) Having at least two cross-coupling paths

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.... (4 indent ) JK type input

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.... (4 indent ) RS or RST type input

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.... (4 indent ) D type input

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.... (4 indent ) Particular device at input, output, or in cross-coupling path

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....• (5 indent ) With diode

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....• (5 indent ) Parallel RC network in cross-coupling path

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....• (5 indent ) Resistor in cross-coupling path

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... (3 indent ) Plural transistors of same conductivity type

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... (3 indent ) With single semiconductor device

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... (3 indent ) With logic element (e.g., NOR gate, etc.)

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... (3 indent ) With single electron tube

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.. (2 indent ) Monostable

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... (3 indent ) Having cross-coupled paths

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... (3 indent ) Having differential circuitry

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... (3 indent ) With external feedback (i.e., output to input)

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. (1 indent ) Phase shift by less than period of input

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.. (2 indent ) Dependent on frequency

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.. (2 indent ) Correction to specific phase shift

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... (3 indent ) Dependent on variable controlled phase shifts

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... (3 indent ) Dependent on multiple fixed phase shifts

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... (3 indent ) By phase comparator or detector

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.. (2 indent ) Variable or adjustable

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... (3 indent ) Quadrature related (i.e., 90 degrees)

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... (3 indent ) Non-overlapping multiple outputs

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... (3 indent ) Maintaining invariant amplitude

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... (3 indent ) With counter or shift register

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.... (4 indent ) Having multiple outputs

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... (3 indent ) With feedback

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.... (4 indent ) With phase comparator or detector

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.... (4 indent ) Having multiple outputs

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... (3 indent ) With differential amplifier

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.... (4 indent ) Having multiple outputs

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... (3 indent ) With adder

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.... (4 indent ) Having multiple outputs

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... (3 indent ) With active time delay element

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.... (4 indent ) Having multiple outputs

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... (3 indent ) With passive time delay element

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.... (4 indent ) Having multiple outputs

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.. (2 indent ) Quadrature related (i.e., 90 degrees)

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... (3 indent ) 90 degrees between input and output

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.. (2 indent ) Phase inversion (i.e., 180 degrees between input and output)

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... (3 indent ) Multiple outputs

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.. (2 indent ) Multiple outputs

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... (3 indent ) Non-overlapping

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.. (2 indent ) Producing AC power control

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. (1 indent ) Having specific delay in producing output waveform

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.. (2 indent ) Including significant compensation (e.g., temperature compensated delay, etc.)

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.. (2 indent ) Delay interval set by rising or falling edge

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... (3 indent ) Having specific active circuit element or structure (e.g., FET, complementary transistors, etc.)

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.... (4 indent ) With counter

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.... (4 indent ) Differential amplifier

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.... (4 indent ) Electron tube

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... (3 indent ) Having specific passive circuit element or structure (e.g., RLC circuit, etc.)

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.. (2 indent ) Multiple outputs with plurality of delay intervals

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... (3 indent ) Variable or adjustable

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... (3 indent ) Including delay line or charge transfer device

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... (3 indent ) Having specific active circuit element or structure(e.g., FET, complementary transistors, etc.)

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.... (4 indent ) With counter

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.... (4 indent ) Differential amplifier

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.... (4 indent ) Electron tube

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.. (2 indent ) Single output with variable or selectable delay

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... (3 indent ) Including delay line or charge transfer device

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... (3 indent ) Having specific active circuit element or structure (e.g., complementary transistors, etc.)

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.... (4 indent ) With counter

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.... (4 indent ) Differential amplifier

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.... (4 indent ) Field-effect transistor

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.... (4 indent ) Electron tube

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... (3 indent ) Having specific passive circuit element or structure (e.g., RLC circuit, etc.)

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.. (2 indent ) Including delay line or charge transfer device

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.. (2 indent ) Having specific active circuit element or structure (e.g., complementary transistors, etc.)

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... (3 indent ) With counter

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... (3 indent ) Differential amplifier

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... (3 indent ) Field-effect transistor

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... (3 indent ) Electron tube

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.. (2 indent ) Having specific passive circuit element or structure (e.g., RLC circuit, etc.)

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. (1 indent ) Clock or pulse waveform generating

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.. (2 indent ) Clock fault compensation or redundant clocks

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.. (2 indent ) With plural paths in network

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... (3 indent ) With common output

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.. (2 indent ) Plural outputs

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... (3 indent ) Plural clock outputs with multiple inputs

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... (3 indent ) Clock bus

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.. (2 indent ) Single clock output with multiple inputs

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.. (2 indent ) Single clock output with single clock input or data input

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.. (2 indent ) With saturable inductance

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.. (2 indent ) With electron beam type tube

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.. (2 indent ) With storage diode

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.. (2 indent ) With rectifier

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.. (2 indent ) With inductive device (e.g., transformer, etc.)

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.. (2 indent ) With gas tube

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. (1 indent ) Amplitude control

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.. (2 indent ) Baseline or DC offset correction

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.. (2 indent ) Variable attenuator

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.. (2 indent ) By limiting, clipping, or clamping

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... (3 indent ) Transient or signal noise reduction

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.... (4 indent ) By filtering

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.... (4 indent ) By feedback limiting-clamping

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.... (4 indent ) Using 3 or more terminal type nonlinear devices only

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.... (4 indent ) Using diode type nonlinear devices only

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... (3 indent ) Providing constant input/output amplitude level ratio

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.... (4 indent ) By feedback control

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... (3 indent ) Distortion compensation

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... (3 indent ) In input or output circuit

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.... (4 indent ) For interstage coupling

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....• (5 indent ) Using diode

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.... (4 indent ) Clamping of output to voltage level

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.... (4 indent ) Of output current

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... (3 indent ) Feedback

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... (3 indent ) By using diverse-type nonlinear devices

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... (3 indent ) Using only diode active elements

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.... (4 indent ) Avalanche or negative resistance device (e.g., zener diode, tunnel diode, etc.)

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... (3 indent ) Using only transistor active elements

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.... (4 indent ) Field-effect type device

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... (3 indent ) With tuned circuit

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... (3 indent ) With rectifier or nonlinear impedance

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.. (2 indent ) Maintaining constant level output

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... (3 indent ) With feedback

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.. (2 indent ) Interstage coupling (e.g., level shift, etc.)

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SPECIFIC INPUT TO OUTPUT FUNCTION

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. (1 indent ) By differentiating

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. (1 indent ) By integrating

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.. (2 indent ) Having switched capacitance

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.. (2 indent ) With thermionic tube

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.. (2 indent ) With summing or counting

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.. (2 indent ) Single vacuum tube

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.. (2 indent ) With compensation

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.. (2 indent ) With transducer

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.. (2 indent ) With rectifier circuit

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.. (2 indent ) Including RC circuit

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.. (2 indent ) Having feedback

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. (1 indent ) Exponential

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.. (2 indent ) Square root

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... (3 indent ) RMS

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.. (2 indent ) Square function

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. (1 indent ) Logarithmic

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.. (2 indent ) With cascade network

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.. (2 indent ) With summing

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.. (2 indent ) With vacuum tube

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. (1 indent ) Absolute value

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. (1 indent ) Combining of plural signals

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.. (2 indent ) Product

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... (3 indent ) Quadrant

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... (3 indent ) Having feedback

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... (3 indent ) Differential amplifier

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.. (2 indent ) Quotient

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.. (2 indent ) Summing

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. (1 indent ) With compensation

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. (1 indent ) Having feedback

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. (1 indent ) With vacuum tube

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GATING (I.E., SWITCHING INPUT TO OUTPUT)

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. (1 indent ) Superconductive (e.g., cryogenic, etc.) device

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.. (2 indent ) Josephson junction

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.. (2 indent ) Critical current control

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.. (2 indent ) External control (e.g., piezoelectric, light, etc.)

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... (3 indent ) Magnetic field control

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... (3 indent ) Temperature control

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.. (2 indent ) Inductive effect

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.. (2 indent ) Layout

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. (1 indent ) Accelerating switching

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.. (2 indent ) Saturation prevention

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.. (2 indent ) Turn-on

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.. (2 indent ) Turn-off

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. (1 indent ) Compensation for variations in external physical values (e.g., temperature, etc.)

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. (1 indent ) Signal transmission integrity or spurious noise override

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.. (2 indent ) Preventing quick rise gating current (i.e., di/dt)

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.. (2 indent ) Preventing quick rise gating voltage (i.e., dv/dt)

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.. (2 indent ) Parasitic prevention or compensation (e.g., parasitic capacitance, etc.)

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.. (2 indent ) Ensuring fully conducting state

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.. (2 indent ) Switch noise signal

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... (3 indent ) Contact bounce from mechanical switch

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.... (4 indent ) With clock input

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.. (2 indent ) Control signal derived from or responsive to input signal

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... (3 indent ) Additional external control signal

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.. (2 indent ) Insulated gate FET (e.g., MOSFET, etc.)

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... (3 indent ) With capacitive bootstrapping

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... (3 indent ) Complementary metal-oxide semiconductor (CMOS)

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. (1 indent ) Delay controlled switch (e.g., fixed, single time of delay control, etc.)

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.. (2 indent ) With variable or multiple adjustable time of delay control (e.g., variable charge-discharge, on-delay/off-delay control, etc.)

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... (3 indent ) With field-effect device

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... (3 indent ) Propagation through plural delay devices or paths

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... (3 indent ) With plural switching elements (e.g., sequential, etc.)

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... (3 indent ) Including negative resistance device in delay circuit (e.g., unijunction transistor, etc.)

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.. (2 indent ) For predetermined time period

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.. (2 indent ) With field-effect device

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.. (2 indent ) Propagation through plural delay devices or paths

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.. (2 indent ) With plural switching elements (e.g., sequential, etc.)

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.. (2 indent ) Including negative resistance device in delay circuit (e.g., unijunction transistor, etc.)

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. (1 indent ) Parallel controlled paths

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.. (2 indent ) Field-effect transistor

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.. (2 indent ) Bipolar transistor

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.. (2 indent ) Electron tube

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. (1 indent ) Converging with plural inputs and single output

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.. (2 indent ) Field-effect transistor

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... (3 indent ) Push-pull circuit

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.... (4 indent ) With complementary transistor devices

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.. (2 indent ) Bipolar transistor

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... (3 indent ) Push-pull circuit

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.... (4 indent ) With complementary transistor devices

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.. (2 indent ) Electron tube

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. (1 indent ) Diverging with single input and plural outputs

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.. (2 indent ) Field-effect transistor

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.. (2 indent ) Bipolar transistor

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.. (2 indent ) Electron tube

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. (1 indent ) Utilizing three or more electrode solid-state device

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.. (2 indent ) Breakdown characteristic (e.g., punch-through, tunneling, etc.)

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... (3 indent ) Zener

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... (3 indent ) Avalanche

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.. (2 indent ) Bridge circuit

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... (3 indent ) Field-effect transistor

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.. (2 indent ) Bilateral transistor

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... (3 indent ) Plural

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.. (2 indent ) Field-effect transistor

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... (3 indent ) With silicon controlled rectifier (SCR)

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... (3 indent ) Four or more electrode solid-state device

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... (3 indent ) JFET (i.e., junction field-effect transistor)

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.... (4 indent ) MESFET (i.e., metal semiconductor field-effect transistor)

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... (3 indent ) With bipolar transistor

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.... (4 indent ) Bi-CMOS

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... (3 indent ) Insulated gate FET (e.g., MOSFET, etc.)

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.... (4 indent ) GaAs

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.... (4 indent ) Plural devices in series

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.... (4 indent ) Complementary metal-oxide semiconductor (CMOS)

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.. (2 indent ) Four or more layer device (e.g., thyristor, etc.)

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... (3 indent ) Bipolar transistor circuit configuring SCR device

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... (3 indent ) GTO (i.e., gate turnoff)

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.... (4 indent ) Plural or combined with other four or more layer device

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.... (4 indent ) Separate ON and OFF control circuit

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.... (4 indent ) Transformer or inductor in control circuit

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... (3 indent ) Complex wave supply

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.... (4 indent ) Silicon controlled rectifier (SCR)

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....• (5 indent ) Triac

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... (3 indent ) AC supply

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.... (4 indent ) Device in bridge

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.... (4 indent ) PUT (i.e., programmable unijunction transistor)

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.... (4 indent ) Four electrodes

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.... (4 indent ) Zero point switching

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....• (5 indent ) With triac

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.... (4 indent ) Silicon controlled rectifier (SCR)

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....• (5 indent ) With unijunction transistor

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....• (5 indent ) Triac

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....•. (6 indent ) Plural

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....•. (6 indent ) Combined with diac

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....•. (6 indent ) Combined with diverse four or more layer device

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....•. (6 indent ) With bipolar transistor

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....• (5 indent ) Plural SCR`s

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....•. (6 indent ) Inverse parallel connection

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....•.. (7 indent ) With bipolar transistor

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....• (5 indent ) With bipolar transistor

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.... (4 indent ) Having plural four or more layer devices

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... (3 indent ) DC supply

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.... (4 indent ) PUT (i.e., programmable unijunction transistor)

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.... (4 indent ) Four electrodes

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.... (4 indent ) SCR and unijunction transistor

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.... (4 indent ) Triac

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.... (4 indent ) Plural devices

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....• (5 indent ) Series anode-cathode connection

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....•. (6 indent ) Plural paths

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....• (5 indent ) Parallel connection

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....• (5 indent ) With bipolar transistor

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.... (4 indent ) SCR and bipolar transistor

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... (3 indent ) Triac

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.. (2 indent ) Unijunction transistor (UJT)

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.. (2 indent ) Bipolar transistor

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... (3 indent ) Special four or more electrode device (e.g., multiple bases, three electrode bipolar with FET gate, etc.)

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.... (4 indent ) Multiple emitter transistor

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.... (4 indent ) Multiple collector transistor

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... (3 indent ) Plural

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.... (4 indent ) Darlington connection

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.... (4 indent ) Opposite conductively (i.e., complementary)

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....• (5 indent ) Control circuit in cascade

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....• (5 indent ) Control circuit in totem pole

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.... (4 indent ) Control circuit in cascade

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.... (4 indent ) Control circuit in totem pole

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.... (4 indent ) Control circuit with common emitter

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....• (5 indent ) With current mirror

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....• (5 indent ) With emitter follower

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.... (4 indent ) Control circuit with common collector

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. (1 indent ) Utilizing two electrode solid-state device

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.. (2 indent ) Bridge circuit

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... (3 indent ) Combined with diverse device in at least one arm

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... (3 indent ) Plural

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... (3 indent ) Active element in diagonal arm

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.. (2 indent ) Negative resistance

499

... (3 indent ) "N"-shape curve on I-V plot (e.g., tunnel diode type, etc.)

500

... (3 indent ) "S"-shape curve on I-V plot (e.g., pnpn diode type, etc.)

501

.... (4 indent ) Hyperconductive diode

502

.. (2 indent ) Breakdown characteristic (e.g., zener diode, etc.)

503

.. (2 indent ) PIN diode

504

.. (2 indent ) PN junction diode

505

... (3 indent ) Inverse parallel connection

506

. (1 indent ) Three or more electrode electron tube

507

. (1 indent ) Two electrode electron tube

508

.. (2 indent ) Bridge circuit

509

EXTERNAL EFFECT

510

. (1 indent ) Magnetic

511

.. (2 indent ) Utilizing Hall effect

512

. (1 indent ) Temperature

513

.. (2 indent ) With compensation for temperature fluctuations

514

. (1 indent ) Light

515

.. (2 indent ) Elements forming an array

516

. (1 indent ) Utilizing conversion of mechanical variations into electrical variations (e.g., vibration sensitive, etc.)

517

. (1 indent ) Responsive to proximity or touch

518

WITH PARTICULAR CONTROL

519

. (1 indent ) Plurality of load devices

520

. (1 indent ) Plural active components included in a controlling circuit

521

.. (2 indent ) Connected in inverse parallel

522

.. (2 indent ) Gaseous tube

523

. (1 indent ) Gaseous tube

524

SPECIFIC IDENTIFIABLE DEVICE, CIRCUIT, OR SYSTEM

525

. (1 indent ) Fusible link or intentional destruct circuit

526

. (1 indent ) Redundant

527

. (1 indent ) Superconductive (e.g., cryogenic, etc.) device

528

.. (2 indent ) Josephson junction

529

.. (2 indent ) Impact ionization

530

. (1 indent ) With specific source of supply or bias voltage

531

.. (2 indent ) Fluctuating or AC source with rectifier or filter

532

... (3 indent ) With particular filter circuit

533

... (3 indent ) With battery connected across rectifier

534

.. (2 indent ) Having particular substrate biasing

535

... (3 indent ) Having stabilized bias or power supply level

536

.... (4 indent ) Charge pump details

537

.... (4 indent ) With field-effect transistor

538

.. (2 indent ) Stabilized (e.g., compensated, regulated, maintained, etc.)

539

... (3 indent ) Using bandgap

540

... (3 indent ) With voltage source regulating

541

.... (4 indent ) With field-effect transistor

542

... (3 indent ) With diverse type transistor devices

543

... (3 indent ) Using field-effect transistor

544

.. (2 indent ) Power conservation or pulse type

545

.. (2 indent ) Including signal protection or bias preservation

546

... (3 indent ) With field-effect transistor

547

.. (2 indent ) With selectively or alternately DC or AC input

548

.. (2 indent ) With oscillator or interrupter

549

.. (2 indent ) With hum or interaction prevention

550

.. (2 indent ) With particular filament heating circuit

551

. (1 indent ) Unwanted signal suppression

552

.. (2 indent ) Active filter

553

... (3 indent ) Adjustable

554

.... (4 indent ) Switched capacitor filter

555

.... (4 indent ) Selective type signal filtering (e.g., from low pass to high pass, etc.)

556

... (3 indent ) Notch or bandreject

557

... (3 indent ) Bandpass

558

... (3 indent ) Lowpass

559

... (3 indent ) Highpass

560

. (1 indent ) Nonlinear amplifying circuit

561

.. (2 indent ) With operational amplifier

562

... (3 indent ) With field-effect transistor

563

.. (2 indent ) With differential amplifier

564

. (1 indent ) Integrated structure

565

.. (2 indent ) With specific layout or layout interconnections

566

... (3 indent ) Having field-effect transistor device

567

. (1 indent ) Thin film

568

. (1 indent ) Negative resistance type

569

.. (2 indent ) Unijunction transistor

570

.. (2 indent ) Having "N"-shape curve on I-V plot (e.g., tunnel diode type, etc.)

571

.. (2 indent ) Having "S"-shape curve on I-V plot (e.g., pnpn diode type, etc.)

572

.. (2 indent ) Secondary emissive type

573

... (3 indent ) Electron multiplier type

574

. (1 indent ) Utilizing a three or more electrode solid-state device

575

.. (2 indent ) Darlington connection

576

.. (2 indent ) Complementary transistors

577

.. (2 indent ) Multiple emitter transistor

578

.. (2 indent ) Multiple collector transistor

579

.. (2 indent ) Minority carrier storage

580

.. (2 indent ) Transistor breakdown device (e.g., avalanche, zener, punch through, etc.)

581

.. (2 indent ) Field-effect transistor

582

.. (2 indent ) Four or more layer device (e.g., silicon-controlled rectifier, etc.)

583

. (1 indent ) Utilizing two electrode solid-state device

584

.. (2 indent ) Breakdown diode (e.g., zener diode, avalanche diode, etc.)

585

.. (2 indent ) Minority carrier storage diode (e.g., enhancement diode, etc.)

586

.. (2 indent ) Capacitive diode

587

.. (2 indent ) Bridge circuit

588

. (1 indent ) With bridge circuit

589

. (1 indent ) With bootstrap circuit

590

. (1 indent ) With particular feedback

591

. (1 indent ) Tube performs plural functions

592

. (1 indent ) With oscillation prevention

593

. (1 indent ) With distributed parameter circuit

594

. (1 indent ) With particular coupling or decoupling

595

. (1 indent ) With particular connecting

596

. (1 indent ) Including oscillatory or shock-excited circuit

597

. (1 indent ) With particular grid control

598

. (1 indent ) With particular tube structure

599

.. (2 indent ) Vacuum tube type

600

... (3 indent ) Beam tube structure

601

.. (2 indent ) Gas tube

602

... (3 indent ) With particular electrode arrangement

603

MISCELLANEOUS

	FOREIGN ART COLLECTIONS

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