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(0)H02M:0/2:

IPC6

SECTION H - ELECTRICITY

APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND...

H02M

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H02M001/00 - H02M003/44

H 02 M

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; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (systems for regulating electric or magnetic variables in general, e.g. using transformers, reactors or choke coils, combination of such systems with static converters G 05 F; for digital computers G 06 F 1/00; transformers H 01 F; connection or control of one converter with regard to conjoint operation with a similar or other source of supply H 02 J; dynamo-electric converters H 02 K 47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H 02 P; pulse generators H 03 K) [4,5]

Notes

(1)	This subclass covers only circuits or apparatus for the conversion of electric power, or arrangements for control or regulation of such circuits or apparatus.

(2)

This subclass does not cover the individual electro-technical devices employed when converting electric power. Such devices are covered by the relevant subclasses, e.g. inductors, transformers H 01 F, capacitors, electrolytic rectifiers H 01 G, mercury-vapour rectifying or other discharge tubes H 01 J, semiconductor devices H 01 L, impedance networks or resonant circuits not primarily concerned with the transfer of electric power H 03 H.

(3)	In this subclass, the following term is used with the meaning indicated:

-	"conversion", in respect of an electric variable, e.g. voltage or current, means the change of one or more of the parameters of the variable, e.g. amplitude, frequency, phase, polarity. [4]

Details of apparatus for conversion

Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters

for tubes with grid control

Circuits specially adapted for rendering non-conductive gas discharge tubes or equivalent semiconductor devices, e.g. thyratrons, thyristors [2]

Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters

using a control circuit common to several phases of a multi-phase system [4]

for the simultaneous control of series or parallel connected semiconductor devices [4]

the control signals being transmitted optically [4]

the power supply of the control circuit being connected in parallel to the main switching element (H 02 M 1/092 takes precedence) [4]

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

Arrangements for reducing harmonics from ac input or output

Arrangements for reducing ripples from dc input or output

using active elements [4]

Means for providing current step on switching, e.g. with saturable reactor

Contact mechanisms of dynamic converters

incorporating collectors and brushes

incorporating rolling or tumbling contacts

incorporating cam-operated contacts

incorporating electromagnetically-operated vibrating contacts

incorporating liquid contacts

Conversion of dc power input into dc power output

without intermediate conversion into ac

by static converters

using resistors or capacitors, e.g. potential divider

using capacitors charged and discharged alternately by semiconductor devices with control electrode [4]

using discharge tubes without control electrode or semiconductor devices without control electrode

using discharge tubes with control electrode or semiconductor devices with control electrode (H 02 M 3/07 takes precedence) [4]

using devices of a thyratron or thyristor type requiring extinguishing means [2]

using discharge tubes only [2]

using semiconductor devices only [2]

with automatic control of output voltage or current, e.g. switching regulators [4]

with digital control [4]

including plural semiconductor devices as final control devices for a single load [4]

using devices of a triode or transistor type requiring continuous application of a control signal [2]

using discharge tubes only [2]

using semiconductor devices only [2]

with automatic control of output voltage or current, e.g. switching regulators [4]

with digital control [4]

including plural semiconductor devices as final control devices for a single load [4]

by dynamic converters

using capacitors or batteries which are alternately charged and discharged, e.g. charged in parallel and discharged in series

by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters

with intermediate conversion into ac

by static converters

using discharge tubes without control electrode or semiconductor devices without control electrode to produce the intermediate ac

using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac

using devices of a thyratron or thyristor type requiring extinguishing means [2]

using discharge tubes only [2]

using semiconductor devices only [2]

using devices of a triode or a transistor type requiring continuous application of a control signal [2]

using discharge tubes only [2]

using semiconductor devices only [2]

in push-pull configuration [4]

in a self-oscillating arrangement (H 02 M 3/337 takes precedence) [4]

by dynamic converters

using mechanical parts to select progressively or to vary continuously the input potential

using mechanical contact-making and -breaking parts to interrupt a single potential

wherein the parts are rotating and collectors co-operate with brushes or rollers

with electromagnetically-operated vibrating contacts, e.g. chopper (self-interrupters in general H 01 H 51/34)

by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters

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