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| Class 323 | ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS |
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![[List of Pre Grant Publications for class 323 subclass 201]](../as.gif) | ![[List of Patents for class 323 subclass 201]](../ps.gif) | 201 | INCLUDING A DYNAMOELECTRIC MACHINE |
| | 205 | FOR REACTIVE POWER CONTROL |
| | 212 | FOR PHASE SHIFT OR CONTROL |
| | 213 |  By splitting and combining |
| | 214 | Using saturable inductor |
| | 215 | Using transformer |
| | 217 | Using a three or more terminal semiconductive device |
| | 218 | Using impedance |
| | 220 | IN SHUNT WITH SOURCE OR LOAD |
| | 221 | Photo responsive |
| | 222 | Using choke and switch across source |
| | 223 | Using a three or more terminal semiconductive device |
| | 227 | Using electronic tube |
| | 229 | Using diode |
| | 232 | Using inductor |
| | 233 | Using impedance |
| | 234 | OUTPUT LEVEL RESPONSIVE |
| | 235 | Zero switching |
| | 237 | Phase controlled switching using electronic tube or a three or more terminal semiconductive device |
| | 238 |  With soft start |
| | 239 | Including single unidirectional element with bidirectional pass |
| | 240 | Including saturable inductor in trigger circuit |
| | 241 | With digital control |
| | 242 | Including ramp generator or controlled capacitor charging |
| | 244 | With synchronization |
| | 245 | With nonelectrical condition sensing |
| | 246 | With plural condition sensing |
| | 247 | Using a transformer or inductor as the final control device |
| | 248 | Ferroresonant |
| | 249 | Controllably saturable |
| | 250 |  With specific core structure (e.g., gap, aperture, slot, permanent magnet) |
| | 251 | With plural power windings |
| | 254 | With electronic tube or a three or more terminal semiconductive device in control circuit |
| | 255 | Having a variable length winding (e.g., tapped) as the final control device |
| | 256 | With motor driven tap switch |
| | 257 |  Including an electronic tube or a three or more terminal semiconductive device in control circuit |
| | 258 | With electronic tube or a three or more terminal semiconductive device as tap switch |
| | 259 | Having a winding in series with the source and load (e.g., buck-boost) |
| | 260 | With motor in control circuit |
| | 261 | With saturable reactor in control circuit |
| | 262 | Plural windngs in series |
| | 263 | With electronic tube or a three or more terminal semiconductive device in control circuit |
| | 264 | Having movable structure or winding |
| | 265 | Using a three or more terminal semiconductive device as the final control device |
| | 266 | Including pre or post regulation |
| | 267 | Including plural loads commonly controlled |
| | 268 | Including plural final control devices |
| | 269 | Linearly acting parallel connected |
| | 270 | Linearly acting series connected |
| | 271 | Switched (e.g., on-off control) |
| | 273 | Linearly acting |
| | 274 | With threshold detection |
| | 275 | With plural condition sensing |
| | 280 | With a specific feedback amplifier (e.g., integrator, summer) |
| | 281 | With reference voltage circuitry |
| | 282 | Switched (e.g., switching regulators) |
| | 291 | Using an electronic tube as the final control device |
| | 293 | Using an impedance as the final control device |
| | 299 | INPUT LEVEL RESPONSIVE |
| | 300 | Phase controlled switching using electronic tube or a three or more terminal semiconductive device |
| | 301 | Using a transformer or inductor as the final control device |
| | 303 | Using a linearly acting final control device |
| | 304 | SELF-REGULATING (E.G., NONRETROACTIVE) |
| | 305 | Using a transformer or inductor as the final control device |
| | 306 | Ferroresonant |
| | 310 | Controllably saturable |
| | 311 | Using a three or more terminal semiconductive device as the final control device |
| | 318 | EXTERNAL O |
