using devices of a thyratron or thyristor type requiring extinguishing means

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 thyratron or thyristor type requiring extinguishing means

Child Classifications

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• H02M 5/447 using discharge tubes only
• H02M 5/45 using semiconductor devices only