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Class Information
Number: 323
Name: Electricity: power supply or regulation systems >
Description: GENERAL STATEMENT OF CLASS SUBJECT MATTER










Class Number Class Name No. of Patents
323/318

External or operator controlled

108
323/320

Phase controlled switching using electronic tube or a three or more terminal semiconductive device

74
323/324

Using single unidirectional element with bidirectional pass

81
323/325

With a three or more terminal semiconductive device in trigger circuit

38
323/326

Including ramp generator or controlled capacitor charging

72
323/322

With digital control

88
323/323

With interval timer

41
323/327

With passive element only in trigger circuit

18
323/321

With soft start

21
323/349

Using a three or more terminal semiconductive device as the final control device

109
323/350

Including plural final control devices

98
323/351

Switched (e.g., switching regulators)

393
323/328

Using a transformer or inductor as the final control device

28
323/329

Controllably saturable

11
323/339

Including an electronic tube or a three or more terminal semiconductive device in control circuit

7
323/331

With core having a gap, aperture, or slot

27
323/330

With permanent magnet

6
323/338

With plural cores

12
323/332

With plural power windings

5
323/333

In bridge configuration or in bridge arm

4
323/335

On different cores

13
323/336

Multistage

2
323/337

Push-pull

3
323/334

On different legs of single core

13
323/345

Having a switch in series with winding

17
323/340

Having a variable length winding (e.g., tapped) as the final control device

68
323/343

With a three or more terminal semiconductive device

45
323/341

With motor driven tap switch

38
323/342

With other transformer

11
323/344

Having a windng in series with the source and load (e.g., buck-boost)

51
323/347

Having movable structure or winding

20
323/348

Including rotary motion

11
323/346

Having series-parallel connectable windings

13
323/352

Using an impedance as the final control device

40
323/353

Resistor

36
323/354

Selective

142
323/319

Zero switching

91
323/212

For phase shift or control

67
323/213

By splitting and combining

17
323/217

Using a three or more terminal semiconductive device

55
323/218

Using impedance

32
323/219

In bridge

14
323/214

Using saturable inductor

13
323/215

Using transformer

45
323/216

With movable structure or winding

14
323/205

For reactive power control

123
323/207

Using converter

482
323/208

Using impedance

86
323/209

Switched impedance

98
323/210

Static switch

189
323/211

Digitally controlled

138
323/206

Using saturable inductor

27
323/220

In shunt with source or load

51
323/221

Photo responsive

26
323/223

Using a three or more terminal semiconductive device

233
323/226

Linearly acting

78
323/225

Plural devices

324
323/224

With additional series regulator

581
323/222

Using choke and switch across source

1469
323/229

Using diode

33
323/230

Inverse parallel

13
323/231

Zener

61
323/227

Using electronic tube

4
323/228

With additional series regulator

8
323/233

Using impedance

45
323/232

Using inductor

24
323/201

Including a dynamoelectric machine

14
323/202

Balancer sets

2
323/204

Condition responsive

19
323/203

With plural sets of slip rings or brushes

2
323/355

Including a transformer or an inductor

113
323/358

Current transformer

39
323/363

Inductor with or in a bridge

19
323/361

Polyphase or plural transformers

100
323/359

Potential transformer

23
323/360

Superconductive

53
323/356

With compensation

87
323/357

For current transformer

42
323/362

With core having permanent magnet or air gap

44
323/364

Including an impedance

65
323/368

Hall effect device or magnetoresistor

48
323/365

In a bridge

23
323/367

Resistor only

33
323/366

Thermistor

21
323/369

Thermistor or resistor

65
323/370

With capacitor

28
323/299

Input level responsive

483
323/300

Phase controlled switching using electronic tube or a three or more terminal semiconductive device

152
323/303

Using a linearly acting final control device

203
323/301

Using a transformer or inductor as the final control device

67
323/302

Saturable

16
323/908

Inrush current limiters

297
323/905

Lamp dimmer structure

89
323/911

Medical electronics

30
323/371

Miscellaneous

31
323/902

Optical coupling to semiconductor

131
323/234

Output level responsive

161
323/237

Phase controlled switching using electronic tube or a three or more terminal semiconductive device

119
323/242

Including ramp generator or controlled capacitor charging

87
323/243

As input to comparator

60
323/240

Including saturable inductor in trigger circuit

16
323/239

Including single unidirectional element with bidirectional pass

93
323/241

With digital control

104
323/245

With nonelectrical condition sensing

27
323/246

With plural condition sensing

76
323/238

With soft start

74
323/244

With synchronization

50
323/265

Using a three or more terminal semiconductive device as the final control device

121
323/268

Including plural final control devices

296
323/269

Linearly acting parallel connected

166
323/270

Linearly acting series connected

103
323/271

Switched (e.g., on-off control)

736
323/272

Parallel connected

619
323/267

Including plural loads commonly controlled

356
323/266

Including pre or post regulation

483
323/273

Linearly acting

421
323/280

With a specific feedback amplifier (e.g., integrator, summer)

534
323/275

With plural condition sensing

221
323/276

For protective system

200
323/277

With current sensor

280
323/278

Having base-emitter of transistor coupled across sensor

50
323/279

Including final control device parameter

41
323/281

With reference voltage circuitry

379
323/274

With threshold detection

453
323/282

Switched (e.g., switching regulators)

2276
323/283

Digitally controlled

1096
323/289

With base drive control dissipation

187
323/290

With inductor in control circuit

140
323/285

With plural condition sensing

1309
323/286

Including filter sensing

182
323/287

In flyback path

100
323/288

With ramp generator or controlled capacitor charging

581
323/284

With threshold detection

1599
323/247

Using a transformer or inductor as the final control device

65
323/249

Controllably saturable

23
323/254

With electronic tube or a three or more terminal semiconductive device in control circuit

22
323/251

With plural power windings

33
323/252

In bridge configuration or in bridge arm

2
323/253

On different cores

15
323/250

With specific core structure (e.g., gap, aperture, slot, permanent magnet)

48
323/248

Ferroresonant

31
323/255

Having a variable length winding (e.g., tapped) as the final control device

97
323/258

With electronic tube or a three or more terminal semiconductive device as tap switch

75
323/256

With motor driven tap switch

31
323/257

Including an electronic tube or a three or more terminal semiconductive device in control circuit

29
323/259

Having a winding in series with the source and load (e.g., buck-boost)

169
323/262

Plural windngs in series

34
323/263

With electronic tube or a three or more terminal semiconductive device in control circuit

45
323/260

With motor in control circuit

16
323/261

With saturable reactor in control circuit

9
323/264

Having movable structure or winding

13
323/291

Using an electronic tube as the final control device

5
323/292

With a three or more terminal semiconductive device in control circuit

6
323/293

Using an impedance as the final control device

53
323/294

Hall effect device, magnetoresistor or thermistor

25
323/296

Liquid contact resistor

3
323/297

Plural selective resistors

54
323/295

Pressure sensitive resistor

0
323/298

Variable resistor

35
323/235

Zero switching

223
323/236

Nonelectrical condition sensing

38
323/903

Precipitators

137
323/909

Remote sensing

31
323/304

Self-regulating (e.g., nonretroactive)

60
323/311

Using a three or more terminal semiconductive device as the final control device

120
323/312

For current stabilization

453
323/315

Including parallel paths (e.g., current mirror)

1354
323/316

With amplifier connected to or between current paths

861
323/317

With switched final control device

184
323/313

To derive a voltage reference (e.g., band gap regulator)

1039
323/314

With additional stage

522
323/305

Using a transformer or inductor as the final control device

27
323/310

Controllably saturable

12
323/306

Ferroresonant

23
323/308

With core having an air gap or magnetic shunt

21
323/309

Including a ferrocapacitor across a tertiary winding

13
323/307

With plural cores

11
323/906

Solar cell systems

372
323/901

Starting circuits

473
323/907

Temperature compensation of semiconductor

485
323/904

Touch systems

40
323/910

Two of three phases regulated

18
 
 
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