|  | H |
SECTION H — ELECTRICITY

|  | H02 |
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER

|  | H02M |
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS (transformers Fulltext... Hierarchy... Expanded...H01F; dynamo-electric converters Fulltext... Hierarchy... Expanded...H02K 47/00; control of converters Fulltext... Hierarchy... Expanded...H02P; pulse generators Fulltext... Hierarchy... Expanded...H03K)

|  | H02M |
Note(s) This sub-class deals only with circuits or apparatus for the conversion of electric power. The electrotechnical elements employed are dealt with in the appropriate sub-classes, e.g. inductors, transformers Fulltext... Hierarchy... Expanded...H01F, capacitors, electrolytic rectifiers Fulltext... Hierarchy... Expanded...H01G, mercury rectifying or other discharge tubes Fulltext... Hierarchy... Expanded...H01J, semiconductor devices Fulltext... Hierarchy... Expanded...H01L, impedance networks or resonant circuits not primarily concerned with the transfer of electric power Fulltext... Hierarchy... Expanded...H03H.

|  | H02M 1/00 |
Details of apparatus for conversion

|  | H02M 1/02 |
· | Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters

|  | H02M 1/04 |
· · | for tubes with grid control

|  | H02M 1/06 |
· | Circuits specially adapted for extinction of the arc in discharge tubes incorporated in static converters

|  | H02M 1/08 |
· | Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters

|  | H02M 1/10 |
· | Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc

|  | H02M 1/12 |
· | Arrangements for reducing harmonics from ac input or output

|  | H02M 1/14 |
· | Arrangements for reducing ripples from dc input or output

|  | H02M 1/16 |
· | Means for providing current step on switching, e.g. with saturable reactor

|  | H02M 1/18 |
· | Means for protecting converters (circuit arrangements for providing protection Fulltext... Hierarchy... Expanded...H02H 7/10)

|  | H02M 1/20 |
· | Contact mechanisms of dynamic converters

|  | H02M 1/22 |
· · | incorporating collectors and brushes

|  | H02M 1/24 |
· · | incorporating rolling or tumbling contacts

|  | H02M 1/26 |
· · | incorporating cam-operated contacts

|  | H02M 1/28 |
· · | incorporating electromagnetically-operated vibrating contacts

|  | H02M 1/30 |
· · | incorporating liquid contacts

|  | H02M 3/00 |
Conversion of dc power input into dc power output

|  | H02M 3/02 |
· | without intermediate conversion into ac

|  | H02M 3/04 |
· · | by static converters

|  | H02M 3/06 |
· · · | using resistors or capacitors, e.g. potential divider

|  | H02M 3/08 |
· · · | using discharge tubes without control electrode or semiconductor devices without control electrode

|  | H02M 3/10 |
· · · | using discharge tubes with control electrode or semiconductor devices with control electrode

|  | H02M 3/12 |
· · · · | using discharge tubes only

|  | H02M 3/14 |
· · · · | using semiconductor devices only

|  | H02M 3/16 |
· · | by dynamic converters

|  | H02M 3/18 |
· · · | using capacitors or batteries which are alternately charged and discharged, e.g. charged in parallel and discharged in series

|  | H02M 3/20 |
· · | by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters

|  | H02M 3/22 |
· | with intermediate conversion into ac

|  | H02M 3/24 |
· · | by static converters

|  | H02M 3/26 |
· · · | using discharge tubes without control electrode or semiconductor devices without control electrode to produce the intermediate ac

|  | H02M 3/28 |
· · · | using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac

|  | H02M 3/30 |
· · · · | using discharge tubes only

|  | H02M 3/32 |
· · · · | using semiconductor devices only, e.g. transistor

|  | H02M 3/34 |
· · | by dynamic converters

|  | H02M 3/36 |
· · · | using mechanical parts to select progressively or to vary continuously the input potential

|  | H02M 3/38 |
· · · | using mechanical contact-making and -breaking parts to interrupt a single potential

|  | H02M 3/40 |
· · · · | wherein the parts are rotating and collectors co-operate with brushes or rollers

|  | H02M 3/42 |
· · · · | with electromagnetically-operated vibrating contacts, e.g. chopper (self-interrupters in general Fulltext... Hierarchy... Expanded...H01H 51/34)

|  | H02M 3/44 |
· · | by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters

|  | H02M 5/00 |
Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases

|  | H02M 5/02 |
· | without intermediate conversion into dc

|  | H02M 5/04 |
· · | by static converters

|  | H02M 5/06 |
· · · | using impedances

|  | H02M 5/08 |
· · · · | using capacitors only

|  | H02M 5/10 |
· · · | using transformers

|  | H02M 5/12 |
· · · · | for conversion of voltage or current amplitude only

|  | H02M 5/14 |
· · · · | for conversion between circuits of different phase number

|  | H02M 5/16 |
· · · · | for conversion of frequency

|  | H02M 5/18 |
· · · · | for conversion of waveform

|  | H02M 5/20 |
· · · | using discharge tubes without control electrode or semiconductor devices without control electrode

|  | H02M 5/22 |
· · · | using discharge tubes with control electrode or semiconductor devices with control electrode

|  | H02M 5/24 |
· · · · | using discharge tubes only

|  | H02M 5/26 |
· · · · · | for conversion of frequency

|  | H02M 5/28 |
· · · · | using semiconductor devices only

|  | H02M 5/30 |
· · · · · | for conversion of frequency

|  | H02M 5/32 |
· · | by dynamic converters

|  | H02M 5/34 |
· · · | using mechanical contact-making and -breaking parts

|  | H02M 5/36 |
· · · · | wherein the parts are rotating and collectors co-operate with brushes or rollers

|  | H02M 5/38 |
· · | by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters

|  | H02M 5/40 |
· | with intermediate conversion into dc

|  | H02M 5/42 |
· · | by static converters

|  | H02M 5/44 |
· · · | using discharge tubes or semiconductor devices to convert the intermediate dc into ac

|  | H02M 5/46 |
· · | by dynamic converters

|  | H02M 5/48 |
· · | by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters

|  | H02M 7/00 |
Conversion of ac power input into dc power output; Conversion of dc power input into ac power output

|  | H02M 7/02 |
· | Conversion of ac power input into dc power output without possibility of reversal

|  | H02M 7/04 |
· · | by static converters

|  | H02M 7/06 |
· · · | using discharge tubes without control electrode or semiconductor devices without control electrode

|  | H02M 7/08 |
· · · · | arranged for operation in parallel

|  | H02M 7/10 |
· · · · | arranged for operation in series, e.g. for multiplication of voltage

|  | H02M 7/12 |
· · · | using discharge tubes with control electrode or semiconductor devices with control electrode

|  | H02M 7/14 |
· · · · | using discharge tubes only

|  | H02M 7/16 |
· · · · · | arranged for operation in parallel

|  | H02M 7/18 |
· · · · · | arranged for operation in series, e.g. for multiplication of voltage

|  | H02M 7/20 |
· · · · | using semiconductor devices only

|  | H02M 7/22 |
· · · · · | arranged for operation in parallel

|  | H02M 7/24 |
· · · · · | arranged for operation in series, e.g. for multiplication of voltage

|  | H02M 7/26 |
· · · | using open-spark devices, e.g. Marx rectifier

|  | H02M 7/28 |
· · · | using electrolytic rectifiers

|  | H02M 7/30 |
· · | by dynamic converters

|  | H02M 7/32 |
· · · | using mechanical contact-making and -breaking parts

|  | H02M 7/34 |
· · · · | wherein the parts are rotating and collectors co-operate with brushes or rollers

|  | H02M 7/36 |
· · · · | with electromagnetically-operated vibrating contacts, e.g. chopper (self-interrupters in general Fulltext... Hierarchy... Expanded...H01H 51/34)

|  | H02M 7/38 |
· · · | using one or more sparking electrodes rotating over counter electrodes

|  | H02M 7/40 |
· · | by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters

|  | H02M 7/42 |
· | Conversion of dc power input into ac power output without possibility of reversal

|  | H02M 7/44 |
· · | by static converters

|  | H02M 7/46 |
· · · | using discharge tubes without control electrode or semiconductor devices without control electrode

|  | H02M 7/48 |
· · · | using discharge tubes with control electrode or semiconductor devices with control electrode

|  | H02M 7/50 |
· · · · | using discharge tubes only

|  | H02M 7/52 |
· · · · | using semiconductor devices only

|  | H02M 7/54 |
· · | by dynamic converters

|  | H02M 7/56 |
· · · | using mechanical parts to select progressively, or to vary continuously, the input potential

|  | H02M 7/58 |
· · · | using mechanical contact-making and -breaking parts to interrupt a single potential

|  | H02M 7/60 |
· · · · | wherein the parts are rotating and collectors co-operate with brushes or rollers

|  | H02M 7/62 |
· · · · | with electromagnetically-operated vibrating contacts, e.g. chopper (self-interrupters in general Fulltext... Hierarchy... Expanded...H01H 51/34)

|  | H02M 7/64 |
· · | by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters

|  | H02M 7/66 |
· | with possibility of reversal

|  | H02M 7/68 |
· · | by static converters

|  | H02M 7/70 |
· · · | using discharge tubes without control electrode or semiconductor devices without control electrode

|  | H02M 7/72 |
· · · | using discharge tubes with control electrode or semiconductor devices with control electrode

|  | H02M 7/74 |
· · · · | using discharge tubes only

|  | H02M 7/76 |
· · · · · | arranged for operation in parallel

|  | H02M 7/78 |
· · · · | using semiconductor devices only

|  | H02M 7/80 |
· · · · · | arranged for operation in parallel

|  | H02M 7/82 |
· · · | using open-spark devices, e.g. Marx rectifier

|  | H02M 7/84 |
· · · | using electrolytic rectifiers

|  | H02M 7/86 |
· · | by dynamic converters

|  | H02M 7/88 |
· · · | using mechanical parts to select progressively or to vary continuously the input potential

|  | H02M 7/90 |
· · · | using mechanical contact-making and -breaking parts to interrupt a single potential

|  | H02M 7/92 |
· · · · | wherein the parts are rotating and collectors co-operate with brushes or rollers

|  | H02M 7/94 |
· · · · | wherein the parts are operated by rotating cams or cam-like devices

|  | H02M 7/95 |
· · · · | with electromagnetically-operated vibrating contacts, e.g. chopper (self-interrupters in general Fulltext... Hierarchy... Expanded...H01H 51/34)

|  | H02M 7/96 |
· · · · | with moving liquid contacts

|  | H02M 7/98 |
· · | by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters