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

More topics under "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" (149,587)
H02M 1 - Details of apparatus for conversion (33,954)
H02M 11 - Power conversion systems not covered by the other groups of this subclass (394)
H02M 3 - Conversion of dc power input into dc power output (54,461)
H02M 5 - 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 (13,094)
H02M 7 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output (46,189)
H02M 9 - Conversion of dc or ac input power into surge output power (1,495)

Patents for 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 (307)
07/1989
07/05/1989	CN1004733B Semiconductor apparatus
12/1988
12/13/1988	US4791346 Elevator motor control
07/1988
07/20/1988	CN87108326A Semiconductor apparatus
09/1987
09/22/1987	US4695935 Power supply
04/1979
04/03/1979	CA1052003A1 Arrangement for rendering watertightness at electrical connections on power transformers
02/1979
02/27/1979	CA1049642A1 Coupling arrangement for the top and base on electric power transformers
01/1978
01/03/1978	US4066745 Clear gel containing gas bubbles

1 2 3 4