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