| US 7,492,119 B2 | ||
| Circuit arrangement for generating motor characteristic curves | ||
| Sten Ritschel, Bannewitz (Germany) | ||
| Assigned to Saia-Burgess Dresden GmbH, Dresden (Germany) | ||
| Filed on Apr. 03, 2007, as Appl. No. 11/695,704. | ||
| Claims priority of application No. 10 2006 017 429 (DE), filed on Apr. 06, 2006. | ||
| Prior Publication US 2007/0236165 A1, Oct. 11, 2007 | ||
| Int. Cl. H02P 1/46 (2006.01) | ||
| U.S. Cl. 318—721 [318/700; 363/98] | 10 Claims |
| 1. A circuit arrangement for generating motor characteristic curves for stabilizing the pull-out torque of a two-phase synchronous
motor, comprising
a series-connected element connected between a first line conductor formed as a neutral conductor and a common phase of the
synchronous motor, and a second line conductor implemented as a conductor connected with a phase of the synchronous motor,
a transistor-diode combination employed as a voltage-controllable series-connected element,
wherein for obtaining an approximately constant sinusoidal AC voltage amplitude and/or AC current amplitude through the synchronous
motor, the transistor designed for the maximum peak voltage of the oscillating line voltage and having an operating point
controllable by an analog control signal is a non-switched bipolar transistor or field effect transistor (FET), and the diodes
are implemented as a rectifier bridge.
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