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; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3/00 Conversion of DC power input into DC power output
H02M3/22 with intermediate conversion into AC
H02M3/24 by static converters
H02M3/28 using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
H02M3/325 using devices of a triode or a transistor type requiring continuous application of a control signal