US Patent Class 323
ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS
 Electronic File Wrappers |  Electronic Patent Documents |  Paper Patent Documents | Current as of: June, 1999
|  and Services |
| Electronic File Wrappers | Electronic Patent Documents | Paper Patent Documents | Current as of: June, 1999
| and Services |
| DF | CLASS NOTES | |
| 201 | DF | INCLUDING A DYNAMOELECTRIC MACHINE |
| 202 | DF | .~ Balancer sets |
| 203 | DF | .~ With plural sets of slip rings or brushes |
| 204 | DF | .~ Condition responsive |
| 205 | DF | FOR REACTIVE POWER CONTROL |
| 206 | DF | .~ Using saturable inductor |
| 207 | DF | .~ Using converter |
| 208 | DF | .~ Using impedance |
| 209 | DF | .~.~ Switched impedance |
| 210 | DF | .~.~.~ Static switch |
| 211 | DF | .~.~.~.~ Digitally controlled |
| 212 | DF | FOR PHASE SHIFT OR CONTROL |
| 213 | DF | .~ By splitting and combining |
| 214 | DF | .~ Using saturable inductor |
| 215 | DF | .~ Using transformer |
| 216 | DF | .~.~ With movable structure or winding |
| 217 | DF | .~ Using a three or more terminal semiconductive device |
| 218 | DF | .~ Using impedance |
| 219 | DF | .~.~ In bridge |
| 220 | DF | IN SHUNT WITH SOURCE OR LOAD |
| 221 | DF | .~ Photo responsive |
| 222 | DF | .~ Using choke and switch across source |
| 223 | DF | .~ Using a three or more terminal semiconductive device |
| 224 | DF | .~.~ With additional series regulator |
| 225 | DF | .~.~ Plural devices |
| 226 | DF | .~.~ Linearly acting |
| 227 | DF | .~ Using electronic tube |
| 228 | DF | .~.~ With additional series regulator |
| 229 | DF | .~ Using diode |
| 230 | DF | .~.~ Inverse parallel |
| 231 | DF | .~.~ Zener |
| 232 | DF | .~ Using inductor |
| 233 | DF | .~ Using impedance |
| 234 | DF | OUTPUT LEVEL RESPONSIVE |
| 235 | DF | .~ Zero switching |
| 236 | DF | .~.~ Nonelectrical condition sensing |
| 237 | DF | .~ Phase controlled switching using electronic tube or a three or more terminal semiconductive device |
| 238 | DF | .~.~ With soft start |
| 239 | DF | .~.~ Including single unidirectional element with bidirectional pass |
| 240 | DF | .~.~ Including saturable inductor in trigger circuit |
| 241 | DF | .~.~ With digital control |
| 242 | DF | .~.~ Including ramp generator or controlled capacitor charging |
| 243 | DF | .~.~.~ As input to comparator |
| 244 | DF | .~.~ With synchronization |
| 245 | DF | .~.~ With nonelectrical condition sensing |
| 246 | DF | .~.~ With plural condition sensing |
| 247 | DF | .~ Using a transformer or inductor as the final control device |
| 248 | DF | .~.~ Ferroresonant |
| 249 | DF | .~.~ Controllably saturable |
| 250 | DF | .~.~.~ With specific core structure (e.g., gap, aperture, slot, permanent magnet) |
| 251 | DF | .~.~.~ With plural power windings |
| 252 | DF | .~.~.~.~ In bridge configuration or in bridge arm |
| 253 | DF | .~.~.~.~ On different cores |
| 254 | DF | .~.~.~ With electronic tube or a three or more terminal semiconductive device in control circuit |
| 255 | DF | .~.~ Having a variable length winding (e.g., tapped) as the final control device |
| 256 | DF | .~.~.~ With motor driven tap switch |
| 257 | DF | .~.~.~.~ Including an electronic tube or a three or more terminal semiconductive device in control circuit |
| 258 | DF | .~.~.~ With electronic tube or a three or more terminal semiconductive device as tap switch |
| 259 | DF | .~.~ Having a winding in series with the source and load (e.g., buck-boost) |
| 260 | DF | .~.~.~ With motor in control circuit |
| 261 | DF | .~.~.~ With saturable reactor in control circuit |
| 262 | DF | .~.~.~ Plural windngs in series |
| 263 | DF | .~.~.~ With electronic tube or a three or more terminal semiconductive device in control circuit |
| 264 | DF | .~.~ Having movable structure or winding |
| 265 | DF | .~ Using a three or more terminal semiconductive device as the final control device |
| 266 | DF | .~.~ Including pre or post regulation |
| 267 | DF | .~.~ Including plural loads commonly controlled |
| 268 | DF | .~.~ Including plural final control devices |
| 269 | DF | .~.~.~ Linearly acting parallel connected |
| 270 | DF | .~.~.~ Linearly acting series connected |
| 271 | DF | .~.~.~ Switched (e.g., on-off control) |
| 272 | DF | .~.~.~.~ Parallel connected |
| 273 | DF | .~.~ Linearly acting |
| 274 | DF | .~.~.~ With threshold detection |
| 275 | DF | .~.~.~ With plural condition sensing |
| 276 | DF | .~.~.~.~ For protective system |
| 277 | DF | .~.~.~.~.~ With current sensor |
| 278 | DF | .~.~.~.~.~.~ Having base-emitter of transistor coupled across sensor |
| 279 | DF | .~.~.~.~ Including final control device parameter |
| 280 | DF | .~.~.~ With a specific feedback amplifier (e.g., integrator, summer) |
| 281 | DF | .~.~.~ With reference voltage circuitry |
| 282 | DF | .~.~ Switched (e.g., switching regulators) |
| 283 | DF | .~.~.~ Digitally controlled |
| 284 | DF | .~.~.~ With threshold detection |
| 285 | DF | .~.~.~ With plural condition sensing |
| 286 | DF | .~.~.~.~ Including filter sensing |
| 287 | DF | .~.~.~.~.~ In flyback path |
| 288 | DF | .~.~.~ With ramp generator or controlled capacitor charging |
| 289 | DF | .~.~.~ With base drive control dissipation |
| 290 | DF | .~.~.~ With inductor in control circuit |
| 291 | DF | .~ Using an electronic tube as the final control device |
| 292 | DF | .~.~ With a three or more terminal semiconductive device in control circuit |
| 293 | DF | .~ Using an impedance as the final control device |
| 294 | DF | .~.~ Hall effect device, magnetoresistor or thermistor |
| 295 | DF | .~.~ Pressure sensitive resistor |
| 296 | DF | .~.~ Liquid contact resistor |
| 297 | DF | .~.~ Plural selective resistors |
| 298 | DF | .~.~ Variable resistor |
| 299 | DF | INPUT LEVEL RESPONSIVE |
| 300 | DF | .~ Phase controlled switching using electronic tube or a three or more terminal semiconductive device |
| 301 | DF | .~ Using a transformer or inductor as the final control device |
| 302 | DF | .~.~ Saturable |
| 303 | DF | .~ Using a linearly acting final control device |
| 304 | DF | SELF-REGULATING (E.G., NONRETROACTIVE) |
| 305 | DF | .~ Using a transformer or inductor as the final control device |
| 306 | DF | .~.~ Ferroresonant |
| 307 | DF | .~.~.~ With plural cores |
| 308 | DF | .~.~.~ With core having an air gap or magnetic shunt |
| 309 | DF | .~.~.~.~ Including a ferrocapacitor across a tertiary winding |
| 310 | DF | .~.~ Controllably saturable |
| 311 | DF | .~ Using a three or more terminal semiconductive device as the final control device |
| 312 | DF | .~.~ For current stabilization |
| 313 | DF | .~.~.~ To derive a voltage reference (e.g., band gap regulator) |
| 314 | DF | .~.~.~.~ With additional stage |
| 315 | DF | .~.~.~ Including parallel paths (e.g., current mirror) |
| 316 | DF | .~.~.~.~ With amplifier connected to or between current paths |
| 317 | DF | .~.~.~.~ With switched final control device |
| 318 | DF | EXTERNAL OR OPERATOR CONTROLLED |
| 319 | DF | .~ Zero switching |
| 320 | DF | .~ Phase controlled switching using electronic tube or a three or more terminal semiconductive device |
| 321 | DF | .~.~ With soft start |
| 322 | DF | .~.~ With digital control |
| 323 | DF | .~.~ With interval timer |
| 324 | DF | .~.~ Using single unidirectional element with bidirectional pass |
| 325 | DF | .~.~ With a three or more terminal semiconductive device in trigger circuit |
| 326 | DF | .~.~.~ Including ramp generator or controlled capacitor charging |
| 327 | DF | .~.~ With passive element only in trigger circuit |
| 328 | DF | .~ Using a transformer or inductor as the final control device |
| 329 | DF | .~.~ Controllably saturable |
| 330 | DF | .~.~.~ With permanent magnet |
| 331 | DF | .~.~.~ With core having a gap, aperture, or slot |
| 332 | DF | .~.~.~ With plural power windings |
| 333 | DF | .~.~.~.~ In bridge configuration or in bridge arm |
| 334 | DF | .~.~.~.~ On different legs of single core |
| 335 | DF | .~.~.~.~ On different cores |
| 336 | DF | .~.~.~.~.~ Multistage |
| 337 | DF | .~.~.~.~.~ Push-pull |
| 338 | DF | .~.~.~ With plural cores |
| 339 | DF | .~.~.~ Including an electronic tube or a three or more terminal semiconductive device in control circuit |
| 340 | DF | .~.~ Having a variable length winding (e.g., tapped) as the final control device |
| 341 | DF | .~.~.~ With motor driven tap switch |
| 342 | DF | .~.~.~ With other transformer |
| 343 | DF | .~.~.~ With a three or more terminal semiconductive device |
| 344 | DF | .~.~ Having a windng in series with the source and load (e.g., buck-boost) |
| 345 | DF | .~.~ Having a switch in series with winding |
| 346 | DF | .~.~ Having series-parallel connectable windings |
| 347 | DF | .~.~ Having movable structure or winding |
| 348 | DF | .~.~.~ Including rotary motion |
| 349 | DF | .~ Using a three or more terminal semiconductive device as the final control device |
| 350 | DF | .~.~ Including plural final control devices |
| 351 | DF | .~.~ Switched (e.g., switching regulators) |
| 352 | DF | .~ Using an impedance as the final control device |
| 353 | DF | .~.~ Resistor |
| 354 | DF | .~.~.~ Selective |
| 355 | DF | INCLUDING A TRANSFORMER OR AN INDUCTOR |
| 356 | DF | .~ With compensation |
| 357 | DF | .~.~ For current transformer |
| 358 | DF | .~ Current transformer |
| 359 | DF | .~ Potential transformer |
| 360 | DF | .~ Superconductive |
| 361 | DF | .~ Polyphase or plural transformers |
| 362 | DF | .~ With core having permanent magnet or air gap |
| 363 | DF | .~ Inductor with or in a bridge |
| 364 | DF | INCLUDING AN IMPEDANCE |
| 365 | DF | .~ In a bridge |
| 366 | DF | .~.~ Thermistor |
| 367 | DF | .~.~ Resistor only |
| 368 | DF | .~ Hall effect device or magnetoresistor |
| 369 | DF | .~ Thermistor or resistor |
| 370 | DF | .~.~ With capacitor |
| 371 | DF | MISCELLANEOUS |
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| CROSS-REFERENCE ART COLLECTIONS | ||
| ****************************** | ||
| 901 | DF | STARTING CIRCUITS |
| 902 | DF | OPTICAL COUPLING TO SEMICONDUCTOR |
| 903 | DF | PRECIPITATORS |
| 904 | DF | TOUCH SYSTEMS |
| 905 | DF | LAMP DIMMER STRUCTURE |
| 906 | DF | SOLAR CELL SYSTEMS |
| 907 | DF | TEMPERATURE COMPENSATION OF SEMICONDUCTOR |
| 908 | DF | INRUSH CURRENT LIMITERS |
| 909 | DF | REMOTE SENSING |
| 910 | DF | TWO OF THREE PHASES REGULATED |
| 911 | DF | MEDICAL ELECTRONICS |