| Patents for H02M 3 - Conversion of dc power input into dc power output (54,461) |
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| 04/24/1990 | US4920309 Error amplifier for use with parallel operated autonomous current or voltage regulators using transconductance type power amplifiers |
| 04/24/1990 | US4920280 Back bias generator |
| 04/24/1990 | US4920256 Universal electronic payment terminal base including memory card programming voltage booster |
| 04/24/1990 | US4920246 High frequency heating apparatus using microcomputer controlled inverter |
| 04/24/1990 | CA1268207A1 Ringing choke type dc/dc converter |
| 04/19/1990 | WO1990004187A1 Dc/dc converter |
| 04/18/1990 | EP0363715A2 Integrated-voltage multiplier circuit for a low-voltage power supply |
| 04/11/1990 | EP0363020A1 Driving circuit |
| 04/11/1990 | CN1041248A Switched-mode power supply circuit |
| 04/10/1990 | US4916599 Switching power supply |
| 04/10/1990 | US4916590 Series resonant magnetic amplifier power supply |
| 04/10/1990 | US4916569 Short circuit protection for switch mode power supply |
| 04/10/1990 | US4916379 DC-to-DC converter using relay coil |
| 04/10/1990 | US4916334 High voltage booster circuit for use in EEPROMs |
| 04/05/1990 | WO1990003688A1 Dual mode flyback power supply |
| 04/04/1990 | EP0361748A1 Power control circuit for discharge lamp and method of operating same |
| 04/04/1990 | EP0361254A2 Method and control arrangement for controlling the output voltages of two DC supply devices |
| 04/04/1990 | EP0360888A1 CMOS pulse width modulator |
| 04/04/1990 | EP0197045B1 Circuit arrangement for the power supply of a television receiver |
| 04/03/1990 | USH772 Power source converter |
| 04/03/1990 | US4914560 Protection circuit for switching mode power supply circuit |
| 04/03/1990 | US4914355 D.C. voltage supply circuit for fluorescent lamps |
| 03/27/1990 | US4912621 Current-balance switching regulator |
| 03/27/1990 | US4912620 Lossless clipper with peak regulation feature |
| 03/27/1990 | US4912617 Switch mode power supply with separately regulated secondary voltage |
| 03/27/1990 | US4912447 Transformer with channels in bobbin |
| 03/21/1990 | EP0359323A1 Switched-mode power supply circuit |
| 03/20/1990 | US4910654 Current limiting scheme for the AC input circuit to a switch mode power supply |
| 03/20/1990 | US4910653 Power converter with cascaded output transformers |
| 03/20/1990 | US4910452 High frequency AC magnetic devices with high efficiency |
| 03/20/1990 | US4910375 Inverter-type resistance welding machine |
| 03/20/1990 | CA1266914A1 High voltage generator for television apparatus |
| 03/15/1990 | DE3830460A1 Circuit arrangement for supplying an electrical load from an AC voltage mains |
| 03/14/1990 | EP0358098A2 Switching voltage regulator with stabilized loop gain |
| 03/14/1990 | CN1040464A Transistored 1000w hv switch power source for trolly bus |
| 03/13/1990 | US4908857 Isolated drive circuit |
| 03/13/1990 | US4908755 Method and circuit for limiting the output current of a flyback converter |
| 03/13/1990 | US4908754 Trigger and control means for bridge inverter |
| 03/13/1990 | US4908753 High-tension power supply for an image recorder |
| 03/13/1990 | US4908752 DC-to-DC voltage-increasing power source |
| 03/12/1990 | EP0343222A4 Ac to dc power converter with integrated line current control. |
| 03/08/1990 | WO1990002440A1 Voltage transformer for charging energy stores |
| 03/08/1990 | WO1990002439A1 Electrostatic transformer |
| 03/07/1990 | EP0357448A2 Electrical power supplies |
| 03/07/1990 | EP0357265A2 Nonlinear resonant switch and converter |
| 03/07/1990 | CN2054231U Large power digital control apparatus for regulating voltage and changing crurent |
| 03/06/1990 | US4907116 Power supply fault protection circuit |
| 03/06/1990 | CA1266505A1 D.c. to d.c. converter |
| 03/01/1990 | DE3829387A1 Circuit arrangement having a sinusoidal current consumption for producing a DC voltage |
| 02/28/1990 | EP0355416A2 Switching regulator |
| 02/28/1990 | EP0355415A2 Switching regulator |
| 02/28/1990 | EP0355333A2 Operating process for a switch regulator |
| 02/28/1990 | CN2053818U Automatic regulating chopper of thyristor for accumulator |
| 02/28/1990 | CN1007027B Self-oscillating power-supply circuit |
| 02/28/1990 | CN1007026B Direct current/direct current converter |
| 02/28/1990 | CN1007025B Self excited blocking oscillation type dc converter |
| 02/27/1990 | US4905314 Semiconductor integrated circuit device having an object circuit to which output voltages of the sub- and main booster circuits are applied |
| 02/27/1990 | US4905136 Power supplying apparatus |
| 02/22/1990 | WO1990001827A1 Switching regulator |
| 02/20/1990 | US4903183 Power supply for a magnetron |
| 02/20/1990 | US4903182 Self-oscillating converter with light load stabilizer |
| 02/20/1990 | US4903181 Power converter having parallel power switching systems coupled by an impedance inversion network |
| 02/20/1990 | US4902958 Incandescent light regulation and intensity controller |
| 02/20/1990 | US4902957 DC/DC converter |
| 02/14/1990 | EP0172891B1 Soft-start control for a push-pull converter-regulator with a flux balancing circuit |
| 02/14/1990 | CN2052986U Dc voltage dropping device for relaying needed 80% dc voltage |
| 02/14/1990 | CN1039685A Switched-mode power supply circuit |
| 02/14/1990 | CN1039666A Current limited dc power controller |
| 02/14/1990 | CN1039665A Bidirectional dc power controller with fault protection |
| 02/13/1990 | US4901216 Power supply regulated by modulating the inductance in a resonant LC circuit |
| 02/13/1990 | US4901215 Isolated switch mode power supply controller |
| 02/13/1990 | US4901214 Continuity angle controlled self-excited inverter circuit |
| 02/13/1990 | US4900989 Magnetron feeding apparatus and method of controlling the same |
| 02/13/1990 | CA1265843A1 Voltage divider circuit |
| 02/08/1990 | WO1990001248A1 A circuit arrangement for a power supply unit |
| 02/08/1990 | WO1990001232A1 Transformer having symmetrical push-pull windings |
| 02/07/1990 | EP0353403A1 Modulating amplifier for high voltages |
| 02/06/1990 | US4899270 DC-to-DC power supply including an energy transferring snubber circuit |
| 02/06/1990 | US4899269 System for regulating the operating point of a direct current power supply |
| 02/06/1990 | US4899113 Switching helix power supply for a TWT |
| 01/31/1990 | EP0353112A1 DC/DC "Cük" converter and mains supply with direct conversion realised by means of such a converter |
| 01/31/1990 | EP0352983A1 Power factor improvement |
| 01/31/1990 | EP0352969A2 Plank and frame transformer |
| 01/31/1990 | EP0352287A1 A voltage converter |
| 01/30/1990 | US4897774 Integrated dual charge pump power supply and RS-232 transmitter/receiver |
| 01/30/1990 | US4897773 Inverter output circuit |
| 01/30/1990 | US4897591 Regulated battery charger |
| 01/30/1990 | US4897522 Output control circuit for inverter |
| 01/30/1990 | US4896637 Power supply device for electrical equipment of an automotive vehicle |
| 01/30/1990 | CA1265215A1 Scr priming and sweep-out circuit apparatus |
| 01/30/1990 | CA1265205A1 Electrosurgical generator with high-frequency pulse width modulated feedback power control |
| 01/30/1990 | CA1265194A1 Protection circuit for switching power supply |
| 01/30/1990 | CA1265192A1 Dc voltage multiplier that can be incorporated into a semiconducting structure |
| 01/25/1990 | WO1990000830A1 Conversion circuit for limiting inrush current |
| 01/24/1990 | EP0351898A2 Inductance and capacitance charge pump circuit for driving power MOS transistor bridges |
| 01/24/1990 | CN1039130A Solid state power controller |
| 01/23/1990 | US4896255 Power pack comprising resonant converter |
| 01/23/1990 | EP0336952A4 A dc to dc power converter. |
| 01/23/1990 | CA1264805A1 Energy converter |
| 01/17/1990 | EP0351144A1 Power supplies |