| Patents for H02M 9 - Conversion of dc or ac input power into surge output power (1,495) |
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| 12/14/1999 | US6002103 Method and apparatus for receiving a universal input voltage in a welding power source |
| 12/01/1999 | CN1236688A Power supply apparatus for welders and method of manufacturing same |
| 11/30/1999 | US5995392 Current limiter |
| 11/10/1999 | CN1234307A Resistance welding control device |
| 11/04/1999 | WO1999056382A1 Generator for generating transient impulses of electrical energy |
| 11/04/1999 | CA2329993A1 Generator for generating transient impulses of electrical energy |
| 11/02/1999 | US5978446 Arc limiting device using the skin effect in ferro-magnetic materials |
| 10/28/1999 | DE19818580A1 Gas generator to create rapid electrical energy pulse to ignite gas burner |
| 10/19/1999 | US5968385 Engine driven inverter welding power supply |
| 10/06/1999 | EP0947278A2 Resistance welding control apparatus |
| 10/06/1999 | EP0947276A1 Method of and apparatus for initiating a welding arc |
| 09/30/1999 | WO1999049561A1 A high-voltage pulse generator |
| 09/16/1999 | DE19906039A1 Gas-Shieldet AC ARC welding Method and Machine Making Use of Consumable Electrode Gas Shieldet AC ARC welding method and Machine Making Use of Consumable Electrode |
| 08/24/1999 | US5943220 Waterproofed power supply apparatus |
| 08/24/1999 | US5942139 Consumable electrode DC arc welder |
| 08/17/1999 | US5939993 Method for developing a high voltage and device for electrostatic coating product spraying |
| 08/04/1999 | EP0933980A2 Arc limiting device |
| 08/03/1999 | US5933335 Compact solid state klystron power supply |
| 08/03/1999 | US5932121 Welding method in the overhead and vertical positions |
| 07/27/1999 | US5930125 Compact solid state klystron power supply |
| 07/08/1999 | WO1999034502A1 Pulse power source apparatus |
| 06/30/1999 | EP0925837A2 Power processor circuit and method for corona discharge pollutant destruction apparatus |
| 06/29/1999 | US5917711 DC power supply apparatus |
| 06/24/1999 | WO1999031773A1 High pulse rate pulse power system |
| 06/23/1999 | CN1220571A Induction heating type galvanized steel sheet alloying system, high frequency heating apparatus, impedance matching apparatus and impedance transforming method |
| 06/22/1999 | US5914974 Pulse power generating circuit |
| 06/10/1999 | WO1999028052A1 Device for driving vibration actuator |
| 06/09/1999 | EP0921710A2 Induction heating type galvanized steel sheet alloying system, high frequency heating apparatus, impedance matching apparatus and impedance transforming method |
| 05/26/1999 | CN1217247A Plasma-arc application apparatus |
| 05/18/1999 | US5905371 For transferring energy from a power source to an output node |
| 05/12/1999 | EP0788677B1 Transformerless high-voltage generator circuit |
| 05/06/1999 | EP0913224A2 Resistance-welding power supply apparatus |
| 05/05/1999 | CN1215642A Resistance-welding power supply apparatus |
| 05/04/1999 | US5900681 Electric device for generating high-voltage square pulses |
| 04/22/1999 | DE19845559A1 Pulse shaping network esp. for rail accelerators for launching shells |
| 04/20/1999 | US5895984 Circuit arrangement for feeding a pulse output stage |
| 04/13/1999 | CA2160866C Method and apparatus for receiving a universal input voltage in a welding power source |
| 04/08/1999 | DE19743263A1 Impulse voltage generation circuit arrangement |
| 03/10/1999 | EP0900620A1 Arc start ancillary apparatus |
| 03/09/1999 | US5881082 Pulsed power supply unit for a pulsed laser |
| 03/02/1999 | US5877952 Power supply apparatus with initial arcing sustaining circuit |
| 03/02/1999 | US5877928 Electronic circuit device |
| 03/02/1999 | US5877613 High-voltage generator with voltage control on the basis of the discharge current |
| 02/24/1999 | CN1208679A Arc start ancillary apparatus |
| 02/16/1999 | US5872706 Circuit arrangement for multiple use of a transformer core |
| 02/03/1999 | EP0894349A1 Method and apparatus for eliminating reflected energy due to stage mismatch in nonlinear magnetic compression module |
| 02/03/1999 | CN1041902C Power source for welding |
| 02/02/1999 | US5866873 Welding power control apparatus for consumable-electrode type pulse arc welding, and a method therefor |
| 02/02/1999 | US5866866 Inverter seam resistance welding electric power supply apparatus |
| 01/26/1999 | US5864116 D.C. chopper with inductance control for welding |
| 01/26/1999 | US5864110 Power supply apparatus for plasma arc utilizing equipment |
| 12/29/1998 | US5854730 Transient and voltage surge protection system and method for preventing damage to electrical equipment |
| 12/16/1998 | EP0884830A2 Power supply unit with a pulse width modulated inverter, in particular for an X-ray generator |
| 12/08/1998 | US5847945 Processes, device for producing a high voltage and installation for electrostatic spraying of a coating product |
| 12/08/1998 | US5845488 Power processor circuit and method for corona discharge pollutant destruction apparatus |
| 12/02/1998 | CN1041040C Plasma-arc power supply apparatus |
| 11/25/1998 | EP0879665A1 Welding power supply |
| 11/18/1998 | EP0877712A1 High-voltage generator with voltage control on the basis of the discharge current |
| 10/20/1998 | US5824991 Pulsed arc welding method and apparatus |
| 10/08/1998 | DE19739273C1 Monolithic integrated power output stage with protection of output transistor |
| 10/07/1998 | EP0868959A1 Pulse arc welding apparatus |
| 09/08/1998 | US5804925 Modulator for generating high power electric pulses |
| 08/27/1998 | WO1998037602A1 Method and apparatus for eliminating reflected energy due to stage mismatch in nonlinear magnetic compression modules |
| 08/12/1998 | EP0791244B1 Modulator for generating a high-power electric pulse |
| 07/29/1998 | CN1188701A Plasma arc utilizing apparatus |
| 07/28/1998 | US5786558 Method and apparatus for controlling inverter resistance welding |
| 07/14/1998 | US5781429 Pulse charging apparatus using electron tube for switching control |
| 05/26/1998 | US5757169 Electric circuit for pulse energized electrostatic precipitator and pulse energized electrostatic precipitator using this circuit |
| 05/14/1998 | WO1998019962A1 High-voltage generator with voltage control on the basis of the discharge current |
| 05/14/1998 | DE19643925A1 Gas-discharge generator with fast voltage rise and high power flow |
| 04/22/1998 | CN1038171C Method and apparatus for producing plasma arc |
| 04/15/1998 | CN1179079A Water-proof power source device |
| 04/14/1998 | US5739643 Device for supplying electric power to flashlamp and method thereof |
| 04/08/1998 | EP0834214A1 Rectification, derectification and power flow control |
| 04/01/1998 | EP0832710A1 Welding method in the overhead and vertical positions |
| 03/31/1998 | US5734544 Solid-state pulse generating apparatus and method particularly adapted for ion implantation |
| 03/25/1998 | CN1177233A Pulased power supply unit |
| 03/17/1998 | US5729562 Pulse power generating circuit with energy recovery |
| 03/11/1998 | EP0828342A2 Pulsed power supply unit |
| 03/10/1998 | US5726847 Method of generating a protection-triggering signal |
| 03/04/1998 | EP0827280A2 Pulse generator |
| 03/04/1998 | CN1175128A Small solid klystron power source |
| 02/28/1998 | CA2213920A1 Compact solid state klystron power supply |
| 02/25/1998 | EP0825695A2 Power processor circuit and method for corona discharge pollutant destruction apparatus |
| 02/18/1998 | CN1173758A Pulse charging apparatus using electron tube for switching control |
| 01/15/1998 | WO1998001950A1 Solid state pulse generating apparatus |
| 01/07/1998 | EP0817348A2 Current limiting device |
| 01/07/1998 | EP0815644A1 Electric device |
| 01/07/1998 | CN1036901C Inverter power supply for welding |
| 01/06/1998 | US5705790 Method of igniting a welding arc |
| 12/29/1997 | EP0814563A1 Pulsed power supply with a network of coils |
| 12/24/1997 | CN1168446A Ignition system |
| 12/17/1997 | EP0813305A2 Pulse charging apparatus using electron tube for switching control |
| 12/17/1997 | CN1167656A Electric circuit for pulse energized electrostatic precipitator and pulse energized electrostatic precipitator using this circuit |
| 12/03/1997 | EP0809885A1 Circuit configuration for feeding a pulse output stage |
| 11/26/1997 | CN1036508C Consumable electrode D.C. ARC welder |
| 11/19/1997 | EP0807315A1 Multi-phase dc plasma processing system |
| 11/19/1997 | CN1165065A Welding power control apparatus for consumable-electrode type pulse arc welding, and method therefor |
| 11/18/1997 | US5688413 Stud welding apparatus |
| 10/30/1997 | DE19707504A1 Electrostatic separator switch gear impulse separator circuit |