Patents
Sitemap › 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 › H02M 3 - Conversion of dc power input into dc power output
Patents for H02M 3 - Conversion of dc power input into dc power output (54,461)
07/1990
07/31/1990US4945464 High voltage DC power supply
07/31/1990US4945463 Switched power pack with protective device for limiting output voltage
07/31/1990US4945462 Zero-current switching DC to DC full-wave mode converter
07/25/1990EP0233942B1 Partial shunt switching limiter for a spacecraft solar-panel or like power-source array
07/24/1990US4943903 Power supply in which regulation is achieved by processing a small portion of applied power through a switching regulator
07/24/1990US4943902 AC to DC power converter and method with integrated line current control for improving power factor
07/24/1990US4943761 Current limited DC power controller
07/18/1990EP0377956A1 Row drive for EL panels and the like with transformer coupling
07/18/1990EP0221104B1 Voltage multiplier circuit
07/18/1990CN1008863B Electric power supply for a unidirectional load
07/18/1990CN1008862B Power-supply circuit
07/17/1990US4942509 Control arrangement for a switch mode power supply
07/17/1990US4942508 Switching regulator
07/17/1990US4942340 Arrangement for displaying operation of booster circuit for flash device camera
07/12/1990WO1990007381A1 High voltage power supply control system
07/12/1990DE3940956A1 Controlling current fed push=pull converter - connecting prim. side part windings alternately across two electronic switches during pulse beat
07/11/1990EP0377538A2 Current mode switching regulator with programmed offtime
07/11/1990EP0377537A2 Circuit for providing fast output current control in a current mode switching power supply
07/11/1990EP0376994A1 Device for producing a magnetic field in an atomic absorption spectrometer.
07/10/1990US4941078 Synchronized switch-mode power supply
07/10/1990US4940929 AC to DC converter with unity power factor
07/10/1990CA1271520A1 Transformer rectifier
07/10/1990CA1271421A1 Methods and compositions for noninvasive administration of sedatives, analgesics, and anesthetics
07/05/1990DE3844210A1 Switched-mode power supply having overload protection
07/05/1990DE3843183A1 Switched-mode power supply device
07/04/1990EP0376627A2 Integrated high voltage generating system
07/03/1990US4939633 Inverter power supply system
07/03/1990US4939632 Power supply circuit
07/03/1990US4939566 Semiconductor switch with parallel DMOS and IGT
07/03/1990US4939443 Method and apparatus for the generation of voltage pulses
07/03/1990US4939381 Power supply system for negative impedance discharge load
07/03/1990CA1271220A1 Power-supply circuit
07/03/1990CA1271218A1 Self-oscillating power-supply circuit
06/1990
06/27/1990EP0375250A2 Electronic ringing signal generator
06/27/1990EP0375020A2 A transient protection circuit
06/27/1990EP0374412A2 Improved series resonant inverter with lossless snubber-resetting components
06/26/1990US4937728 Switch-mode power supply with burst mode standby operation
06/26/1990US4937727 Switch-mode power supply with transformer-coupled feedback
06/26/1990US4937726 High forward blocking voltage protection circuit
06/26/1990US4937724 For producing a DC voltage in response to an AC voltage
06/26/1990US4937722 High efficiency direct coupled switched mode power supply
06/26/1990US4937721 Cancellation of regulator output filter poles by second derivative feedback
06/26/1990US4937540 Filter for switchmode power converters
06/26/1990CA1270899A1 Switched regulator circuit having an extended duty cycle range
06/20/1990EP0373670A2 Circuit arrangement for an inverter of a DC-DC converter
06/19/1990US4935858 Auxiliary output regulation technique for power supplies
06/19/1990US4935857 Transistor conduction-angle control for a series-parallel resonant converter
06/19/1990US4935644 Semiconductor integrated circuit device
06/19/1990CA1270520A1 Hybrid switching circuit in a dc to dc converter
06/14/1990WO1990006619A1 Synchronization circuit for a resonant flyback high voltage supply
06/13/1990EP0372792A2 High frequency zero voltage switching resonant power inverter with extended line and load range
06/12/1990US4933830 Switching power supply
06/12/1990US4933829 Free running flyback DC power supply with current limit circuit
06/12/1990US4933827 Regulation of the output voltage of a voltage multiplier
06/12/1990US4933825 Power supply
06/12/1990CA1270298A1 Switching power supply
06/09/1990CA2005017A1 Synchronization circuit for a resonant flyback high voltage supply
06/06/1990EP0371928A2 Protection of power converters from voltage spikes
06/06/1990EP0371556A1 Circuit arrangement for powering a load
06/06/1990EP0371555A1 Circuit arrangement for powering a load
06/06/1990EP0243403B1 Rfi suppression technique for switching circuits
06/05/1990US4931920 Circuit and method for regulating output voltage of a switch mode power supply having a current mode magnetic amplifier
06/05/1990US4931918 Ringing choke converter
06/05/1990US4931824 Camera boosting circuit
06/05/1990US4931716 Constant frequency zero-voltage-switching multi-resonant converter
06/05/1990CA1270040A1 Vehicular power supply system having a plurality of power supply voltages
05/1990
05/30/1990EP0370980A2 Power supply device and its use in a crt display apparatus
05/30/1990EP0370896A1 Power interrupting device, particularly for a frequency convertor
05/30/1990EP0370102A1 High frequency matrix transformer
05/29/1990US4930060 Switch-mode power supply
05/29/1990US4930059 Switched-mode DC-to-DC power converter
05/29/1990US4930040 Current regulator for inductive loads
05/29/1990US4929882 Apparatus for converting DC to DC having non-feed back variable hysteretic current-mode control for maintaining approximately constant frequency
05/23/1990EP0369180A2 A circuit device, made up of a reduced number of components, for simultaneously turning on a plurality of power transistors
05/23/1990EP0369118A2 Method for operating a boost regulator, and arrangement
05/22/1990US4928220 Switching mode DC-to-DC power supply with improved current sensing
05/22/1990US4928218 Switch mode power supply start-up circuit
05/22/1990US4928038 Power control circuit for discharge lamp and method of operating same
05/22/1990CA2003657A1 Power switching circuit, in particular for a frequency converter
05/17/1990DE3838430A1 Circuit arrangement for the variable supply of an ohmic load from an AC network
05/15/1990US4926354 Power controller with low standby current drain
05/15/1990US4926305 Electric power station
05/15/1990US4926304 Switched-mode power supply with low loss interrupted oscillation
05/15/1990US4926303 Control circuit for a switching DC to DC Power converter including a multi-turn control transformer
05/15/1990US4926302 Switching power source device
05/15/1990US4926074 Semiconductor switch with parallel lateral double diffused MOS transistor and lateral insulated gate transistor
05/10/1990DE3837933A1 Pulsed power supply device
05/10/1990DE3837561A1 DC voltage converter operating on the principle of a single-ended forward converter
05/09/1990EP0367380A2 Double-switched flyback power-converter
05/08/1990US4924369 Regulated blocking converter wherein switch conduction time increases with higher output voltages
05/03/1990DE3837119A1 Digital-capacitive DC/DC voltage multiplier
05/02/1990EP0366314A1 Single MAG AMP control system for regulating bipolar voltage output of a power converter
05/02/1990CN1007860B Microthyristor circuit and device
05/01/1990US4922403 Voltage multiplier circuit with reduced back-gate bias effect
05/01/1990US4922402 CMOS voltage multiplier
05/01/1990US4922399 DC-to-DC converter having improved power supply arrangement
05/01/1990US4922397 Apparatus and method for a quasi-resonant DC to DC bridge converter
05/01/1990US4922396 DC-DC converter
04/1990
04/24/1990US4920474 High frequency high voltage power supply with controlled output power
04/24/1990US4920470 Voltage inverter
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