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)
11/1991
11/19/1991CA1292276C Self-oscillating switching regulator having real-time current adjustmentcontrol
11/14/1991DE4015024A1 Generator for uniform voltage of specific polarity - is based upon multivibrator set to provide operating point and with output amplifier stage
11/14/1991DE4014833A1 Standby voltage generator for TV receiver - uses transformer and artificial load to regulate period of pulses
11/13/1991EP0455960A1 Reversible converter and its application as control element of an energy storage device
11/12/1991US5065301 Switching power supply
11/12/1991US5065300 Class E fixed frequency converter
11/09/1991CA2039915A1 Two-quadrant converter and its use as the control element of an energy store
11/07/1991DE4014302A1 Variable DC supply for two pole appts. - has parallel sources with short circuit switches and series decoupling diodes allowing adjustment in stages
11/06/1991EP0455062A1 Current-fed push-pull converter
11/06/1991CN1056034A Stabilized power supply circuit
11/06/1991CN1014594B Train steady inverter
11/05/1991US5063491 Switching regular undervoltage detector
11/05/1991US5063489 Switching regulator having improved switching control arrangement
11/05/1991US5063488 Switching power source means
10/1991
10/31/1991DE4105464A1 Clocked current regulator with switching control - has switching pulse duration adjusted dependent on noise parameter
10/31/1991DE4013506A1 DC-operated drive system - has voltage converter between DC source and DC-AC converter supplying motor
10/31/1991DE4013477A1 DC voltage converter for electronic equipment current supply - uses controlled switch and microprocessor controlling switching in duration of switch
10/29/1991US5062031 Self oscillating power stage for inverted rectifier power supply
10/29/1991CA1291530C Switch circuit
10/27/1991WO1991016756A1 D.c. changer with current limitation
10/23/1991EP0453180A2 Stabilized power supply circuit
10/23/1991EP0452981A2 Frequency limited resonant regulator
10/22/1991US5060131 DC to DC converter power supply with feedback controlled constant current output
10/22/1991US5060130 High-efficiency, high-density, power supply including an input boost power supply
10/22/1991US5060128 Flyback power supply
10/22/1991US5059887 Step-up and step-down chopper device
10/22/1991US5059816 High speed booster circuit
10/22/1991US5059815 High voltage charge pumps with series capacitors
10/16/1991EP0451154A1 High voltage power supply control system
10/16/1991CN1055451A Switch mode power supply
10/15/1991US5057990 Bidirectional switching power apparatus with AC or DC output
10/15/1991US5057986 Zero-voltage resonant transition switching power converter
10/15/1991US5057765 Current regulation circuit for inductive loads
10/15/1991US5057707 Charge pump including feedback circuitry for eliminating the requirement of a separate oscillator
10/15/1991US5057698 Shunt circuit for reducing audible noise at low loading conditions of a power supply employing a high frequency resonant converter
10/15/1991CA1290817C Power supply apparatus
10/15/1991CA1290809C Nonlinear resonant switch and converter
10/15/1991CA1290808C Pwm inverter with a saturable core
10/10/1991DE4011480A1 Switched power supply - generates negative pulses that are rectified to produce negative constant voltage
10/09/1991EP0450999A1 Electric power supply device with energy reserve, in particular for a microwave tube
10/09/1991EP0450998A1 Improved current generator
10/09/1991EP0450797A1 Charge pump apparatus
10/09/1991EP0450796A2 Capacitor charge pumps
10/08/1991US5055991 Lossless snubber
10/08/1991US5055767 Analog multiplier in the feedback loop of a switching regulator
10/08/1991US5055708 Circuit for driving an inductive load
10/03/1991WO1991015054A1 Switching power supply with foldback current limiting
10/03/1991WO1991015052A1 Voltage multiplier circuit
10/02/1991EP0449504A2 Improvements relating to DC-DC converters
10/02/1991EP0449495A2 Electrical power supply
10/02/1991EP0449235A2 High efficiency charge pump circuit
10/02/1991EP0448908A1 Method for generating a stable DC voltage and stabilized DC voltage source
10/02/1991DE4010100A1 Supply of HF generator - is provided by transformer with switched primary and comparator control stage
10/01/1991US5053937 Method for controlling push-pull series-resonant converter switching power supplies with regulated output voltage
10/01/1991US5053727 Circuit coupling an oscillator to an electrical load
09/1991
09/24/1991US5051882 Three reservoir capacitor charge pump circuit
09/24/1991US5051881 Voltage multiplier
09/24/1991US5051880 Mixed mode regulation controller for a resonant power converter
09/19/1991WO1991014327A1 Circuits for the separate potential transmission of pulses of any length or frequency for driving transitor circuits
09/19/1991DE4008652A1 Mains unit with DC-to-DC converter - has primary transformer stage with transistor switch operated in pulsed mode controlled by feedback
09/19/1991DE4007953A1 DC=DC converter using switched capacitors
09/18/1991WO1991015053A2 Electronic switch supply unit
09/18/1991EP0446490A1 Switching converter
09/17/1991US5049761 CMOS pulse width modulator
09/11/1991EP0445775A2 Switchmode power supply drawing a sinusoidal current and avoiding input current surges
09/11/1991EP0445501A1 Variable high voltage generator
09/10/1991US5048016 Circuit configuration for increasing the output voltage of an electronic switching stage
09/10/1991US5047912 Four-terminal unity power factor electronic rectifier
09/10/1991US5047911 Device for a unipolarly operated electrical circuit component
09/10/1991US5047675 Circuit device, made up of a reduced number of components, for simultaneously turning on a plurality of power transistors
09/10/1991CA1288861C On/off control circuitry for television
09/10/1991CA1288810C D.c. voltage supply circuit
09/04/1991EP0445083A1 Voltage-boosted phase oscillator for driving a voltage multiplier
09/04/1991CN2084252U Field effect power tube type high voltage dc-to ac converting power supper for mine
09/03/1991US5045774 Full scale AC or DC power attenuator
09/03/1991US5045771 Method and circuit for preventing transients from damaging a switching regulator
09/03/1991US5045712 Synchronized switched mode power supplies
09/03/1991CA1288474C Power converter with reduced switching loss
08/1991
08/28/1991EP0443342A1 Method for controlling the energy transfer in a static converter, static energy converter for carrying out such method and electric power supply using such converter
08/28/1991EP0443246A2 Switch-mode power supply
08/28/1991EP0443238A2 Precision switched current source
08/28/1991EP0443155A1 Switchgear for switch-on and switch-off
08/28/1991EP0443032A1 Power supply control apparatus of inductance load
08/27/1991US5043858 High-voltage generating circuit having improved voltage boosting efficiency
08/27/1991US5043680 Resonant converter oscillator usable for powering a magnetron
08/27/1991CA1288132C High voltage generating circuit using a minimal amount of current
08/22/1991WO1991012649A1 Combinatorial circuit component
08/22/1991DE4005168A1 Rapid switching circuit for transformer or motor
08/22/1991DE4005129A1 High-frequency induction heater - has ferrite annular core and winding which produces eddy currents at frequency of power-MOSFET switched resonant DC-AC converter
08/22/1991DE4004791A1 Continuously adjustable DC voltage converter - has clocked transistor coupled via choke coil to storage capacitor
08/22/1991DE4004707A1 Schaltnetzteil Switching power supply
08/20/1991US5041956 Switched-mode power supply circuit including a starting circuit
08/20/1991US5041739 Substrate potential generating circuit
08/20/1991CA1287878C Circuit arrangement for generating high voltage pulses
08/13/1991US5039877 Low current substrate bias generator
08/07/1991EP0440534A1 Current control device for an electronic commutated motor and electromechanical structure including such a device
08/06/1991US5038325 Semiconductor
08/06/1991US5038265 Power supply with multiple outputs and load balancing
08/06/1991US5038264 Multiple-output, single-ended, resonant power converter
08/06/1991US5038263 Ripple current reduction circuit
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