CPC Subgroup
H02M 5/22 using discharge tubes with control electrode or semiconductor devices with control electrode
Full Title
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 > without intermediate conversion into DC > by static converters (controlling transformers, reactors or choke coils, e.g. by tap changing H02P13/00) > using discharge tubes with control electrode or semiconductor devices with control electrode
3 direct subcodes
Child Classifications
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- H02M 5/25 using devices of a thyratron or thyristor type requiring extinguishing means
- H02M 5/275 using devices of a triode or transistor type requiring continuous application of a control signal