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

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 > with intermediate conversion into DC > by static converters > using discharge tubes or semiconductor devices to convert the intermediate DC into AC > using devices of a triode or transistor type requiring continuous application of a control signal

Child Classifications

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• H02M 5/456 using discharge tubes only
• H02M 5/458 using semiconductor devices only