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Class Information
Number: 363/131
Name: Electric power conversion systems > Current conversion > Using semiconductor-type converter > In transistor inverter systems
Description: Subject matter wherein the semiconductor device includes a transistor type element.










Sub-classes under this class:

Class Number Class Name Patents
363/132 Bridge type 1,467
363/133 Double ended (i.e., push-pull) type 186


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14

Patent Number Title Of Patent Date Issued
4819144 Switching power supply circuit with stored charge removal switch Apr. 4, 1989
4816960 Fail-safe output switching device Mar. 28, 1989
4812960 Power feeding apparatus Mar. 14, 1989
4809149 Single-ended down converter Feb. 28, 1989
4809148 Full-fluxed, single-ended DC converter Feb. 28, 1989
4802075 Electronic circuitry for converting direct voltage to alternating voltage Jan. 31, 1989
4802076 Switching regulator type power supply circuit Jan. 31, 1989
4800323 Single-ended self-oscillating dc-dc converter for intermittently energized load having V.sub.BE responsive current limit circuit Jan. 24, 1989
4799138 Circuit for producing an alternating voltage Jan. 17, 1989
4788634 Resonant forward converter Nov. 29, 1988
4785387 Resonant converters with secondary-side resonance Nov. 15, 1988
4775821 Variable input voltage DC to DC converter with switching transistor drive current regulator Oct. 4, 1988
4774649 Integrated magnetic resonant power converter Sep. 27, 1988
4760512 Circuit for reducing transistor stress and resetting the transformer core of a power converter Jul. 26, 1988
4755723 Strobe flash lamp power supply with afterglow prevention circuit Jul. 5, 1988
4743789 Variable frequency drive circuit May. 10, 1988
4742441 High frequency switching power converter May. 3, 1988
4740879 Blocking oscillator switched power supply with standby circuitry Apr. 26, 1988
4740880 Blocking oscillator-switched power supply with peak current reduction circuitry Apr. 26, 1988
4737898 Single-ended self-oscillating, DC-DC converter with regulation and inhibit control Apr. 12, 1988
4731721 Regulated high-voltage power supply with output shorting prevention Mar. 15, 1988
4727468 Digital PWM control circuit Feb. 23, 1988
4717995 Procedure for converting direct electrical energy into alternating electrical energy Jan. 5, 1988
4704674 Power feed apparatus for load having reverse blocking characteristics Nov. 3, 1987
4700285 Combined PWM-FM control method and circuit for the high efficiency control of resonant switch mode inverters/converters Oct. 13, 1987
4700280 Switching power supply using a saturable reactor to control a switching element Oct. 13, 1987
4698741 High efficiency high voltage power supply for gas discharge devices Oct. 6, 1987
4692855 Constant voltage and frequency type PWM inverter with minimum output distortion Sep. 8, 1987
4692852 Switching power supply with raster width stabilization Sep. 8, 1987
4688160 Single ended forward converter with resonant commutation of magnetizing current Aug. 18, 1987
4682081 Single-ended, self-oscillating DC-DC converter for intermittently energized load having V.sub.BE responsive current limit circuit Jul. 21, 1987
4680687 Switch-mode power supply having a free-running forward converter Jul. 14, 1987
4680688 DC/DC converter Jul. 14, 1987
4679131 Regulating power supply for video display apparatus Jul. 7, 1987
4679132 Floating battery feed circuit using multifilar transformer Jul. 7, 1987
4660134 DC-DC converter with chopping switch and transformer Apr. 21, 1987
4652986 Vital inverter driver Mar. 24, 1987
4646218 Self-adjusting switched mode power supply Feb. 24, 1987
4614998 DC-AC converter for a load with an inductive component Sep. 30, 1986
4613934 Power supply for gas discharge devices Sep. 23, 1986
4611150 Load responsive inverter for electroluminescent lamp Sep. 9, 1986
4609980 Switching power supply with transistor drive circuit Sep. 2, 1986
4608627 Non-dissipative current distribution circuit for magnetohydrodynamic generator electrodes Aug. 26, 1986
4607319 Flyback DC/DC converter with low ripple in the output capacitor Aug. 19, 1986
4605999 Self-oscillating high frequency power converter Aug. 12, 1986
4602323 Single-ended transformer drive circuit Jul. 22, 1986
4594649 Bootstrap drive for a two-transistor forward converter Jun. 10, 1986
4566060 DC-to-AC Voltage converter having galvanically separated input and output(s) Jan. 21, 1986
4559478 Fluorescent lamp circuit Dec. 17, 1985
4536631 Induction heating cooking apparatus Aug. 20, 1985

1 2 3 4 5 6 7 8 9 10 11 12 13 14










 
 
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