| Patents for H02M 9 - Conversion of dc or ac input power into surge output power (1,495) |
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| 11/21/2001 | CN1074965C Inverter seam contact welding electric power supply apparatus |
| 11/20/2001 | US6321167 Resistance-welding power supply apparatus |
| 11/08/2001 | US20010038000 Method and apparatus for receiving a universal input voltage in a welding power source |
| 11/07/2001 | CN1320502A Method and apapratus for receiving universal input voltage in welding, plasma or heating power supply apparatus |
| 11/07/2001 | CN1074334C Method and apparatus for controlling inverter resistance welding |
| 10/30/2001 | US6310321 Engine driven inverter welding power supply |
| 10/18/2001 | US20010030527 Switching circuit for generating pulsed power |
| 10/10/2001 | EP1142090A1 Voltage switch-over device |
| 10/04/2001 | EP1138429A2 A welding, plasma or heating power source |
| 09/26/2001 | CN1071842C 点火系统 Ignition system |
| 09/18/2001 | US6291798 Electric ARC welder with a plurality of power supplies |
| 08/29/2001 | EP1128557A2 Switching circuit for generating pulsed power |
| 08/23/2001 | WO2000005813A3 Electrical high power pulse generator |
| 08/21/2001 | US6278080 Power supply apparatus |
| 08/07/2001 | US6271694 Monolithically integrated output stage |
| 07/26/2001 | WO2001053030A1 Method for regulating and/or controlling a welding current source with a resonance circuit |
| 07/25/2001 | EP1118415A2 Arc welder and torch for same |
| 07/10/2001 | US6259059 Arc welder and torch for same |
| 06/27/2001 | CN1300654A Electric arc welder and electrode holder thereof |
| 06/14/2001 | WO2001043267A1 Power supply with flux-controlled transformer |
| 05/29/2001 | US6240112 High pulse rate pulse power system with liquid cooling |
| 05/29/2001 | US6239407 Method and apparatus for receiving a universal input voltage in a welding power source |
| 05/22/2001 | US6236545 Current limiting device utilizing a superconductor |
| 05/10/2001 | US20010000899 Tandem electrode welder and method of welding with two electrodes |
| 05/01/2001 | US6226307 Magnetic switch controlled power supply isolator and thyristor commutating circuit |
| 05/01/2001 | US6224837 Using mos-assisted gate controlled thyristor for supplying power |
| 04/25/2001 | CN1292314A Arc welding machine with multi-power supply |
| 04/24/2001 | US6222167 Impedance matching apparatus for induction heating type galvanized steel sheet alloying system and method |
| 04/04/2001 | CN1289660A Welder with inputs by engine power supply and public power supply |
| 03/29/2001 | WO2001022563A1 High efficiency circuit to operate high-frequency oil ignitor and gas discharge devices |
| 03/28/2001 | EP1086774A2 Welding power supply |
| 03/28/2001 | EP1086773A2 Electric arc welder with a plurality of power supplies |
| 03/27/2001 | US6207929 Tandem electrode welder and method of welding with two electrodes |
| 03/27/2001 | US6207927 Gas-shielded AC arc welding method and machine making use of consumable electrode |
| 03/06/2001 | CA2233172C Pulse arc welding apparatus |
| 02/27/2001 | US6195272 Pulsed high voltage power supply radiography system having a one to one correspondence between low voltage input pulses and high voltage output pulses |
| 02/15/2001 | WO2001011733A1 High pulse rate pulse power system with fast rise time and low leakage current |
| 02/15/2001 | WO2001011732A1 High pulse rate pulse power system with liquid cooling |
| 02/14/2001 | EP1075729A1 Generator for generating transient impulses of electrical energy |
| 02/14/2001 | CN1061919C Arc start ancillary appts |
| 02/07/2001 | CN1061797C Pulse charging apparatus using electron tube for switching control |
| 02/06/2001 | US6184662 Pulsed power supply device |
| 01/31/2001 | EP1072085A1 A high-voltage pulse generator |
| 01/30/2001 | US6181576 Power supply apparatus for arc-utilizing apparatuses |
| 01/09/2001 | US6172888 Resistance welding power supply apparatus |
| 12/27/2000 | EP1063044A2 Tandem electrode welder and method of welding with two electrodes |
| 12/27/2000 | CN1277900A Series connected electrode type welding machine and welding method using two electrodes |
| 12/26/2000 | US6166619 Overcurrent limiter having inductive compensation |
| 12/21/2000 | DE19912981C1 Supply of a wide range of plasmas e.g. for use in biological processes by supplying a barrier discharge using sequentially adjustable phases |
| 12/19/2000 | US6163242 Rotationally symmetrical high-voltage pulse transformer with tesla resonance and energy recovery |
| 12/06/2000 | EP1057567A2 ARC welding power supply, peripheral device for ARC welding, and ARC welding apparatus |
| 11/29/2000 | EP1055477A2 Fusing processing method |
| 11/29/2000 | CN1274630A Welding processing method |
| 11/21/2000 | US6151346 High pulse rate pulse power system with fast rise time and low current |
| 11/16/2000 | WO2000069231A1 High-voltage transformer and electrodynamic particle accelerator |
| 11/02/2000 | EP1048388A2 Resistance welding power supply apparatus |
| 11/01/2000 | CN1271806A Waste gas treatment equipment |
| 11/01/2000 | CN1271631A Power supply apparatus for resistance welding |
| 10/24/2000 | US6137077 Inverter resistance welding control apparatus |
| 10/04/2000 | EP1040539A1 High pulse rate pulse power system |
| 09/20/2000 | EP1036600A1 Device for driving vibration actuator |
| 08/30/2000 | EP1032110A1 Alternator with perfectionate protection means by load shedding and associated regulator |
| 08/29/2000 | US6111217 Engine driven inverter welding power supply |
| 07/19/2000 | EP1020983A2 Power circuit |
| 07/12/2000 | CN1259788A Power supply circuit |
| 07/06/2000 | DE19962618A1 Electric fence arrangement with low wt. transformer has several parallel storage capacitors and thyristors, each in parallel with capacitor, sequentially controlled capacitor discharging |
| 07/06/2000 | DE19859398A1 HV pulse generation circuit uses switched arc path for discharge of series and parallel charge storage capacitors via third charge storage capacitor |
| 06/27/2000 | US6081074 Method and apparatus for offsetting power draw in a multiple channel system |
| 06/21/2000 | CN1053603C Plasma arc utilizing apparatus |
| 06/13/2000 | US6075224 Method of and apparatus for initiating a welding arc |
| 06/07/2000 | CN1053301C Pulsed power supply unit |
| 06/06/2000 | US6072856 Power supply unit including a pulse width modulated inverter, notably for an x-ray generator |
| 05/31/2000 | EP1004388A1 Pulse welding equipment and its control method |
| 05/25/2000 | WO2000030241A1 Voltage switch-over device |
| 05/25/2000 | CA2349611A1 Voltage switch-over device |
| 05/23/2000 | US6066831 ARC start ancillary apparatus |
| 05/11/2000 | WO2000027021A1 Fast accelerating flow generator power supply |
| 05/02/2000 | US6057524 Plasma arc utilizing apparatus |
| 04/25/2000 | US6054674 DC power supply apparatus for arc-utilizing apparatuses |
| 04/18/2000 | US6051807 Pulse arc welding apparatus |
| 04/18/2000 | US6051806 Power supply apparatus for welders and method of manufacturing same |
| 04/12/2000 | CN1249977A Converter impedance welding controller |
| 04/04/2000 | US6046424 Resistance welding control apparatus |
| 03/30/2000 | WO1999067875A3 High voltage pulse generation device for magnetron |
| 03/29/2000 | EP0834214A4 Rectification, derectification and power flow control |
| 03/22/2000 | CN1050555C Welding power control apparatus for consumable-electrode type pulse arc welding and method therefor |
| 03/22/2000 | CN1050554C Ignition method for electric arc-welding |
| 03/15/2000 | CN1247644A Pulse power source appts. |
| 03/02/2000 | WO2000011784A1 A high voltage pulse generator using a non-linear capacitor |
| 02/22/2000 | US6028872 High pulse rate pulse power system with resonant power supply |
| 02/16/2000 | EP0979704A2 Inverter resistance welding control apparatus |
| 02/03/2000 | WO2000005813A2 Electrical high power pulse generator |
| 02/03/2000 | CA2338111A1 Improvement to pulsed power |
| 02/01/2000 | US6021055 Intentional cross conduction of converter circuit to ignite high ignition voltage loads |
| 02/01/2000 | US6020723 Magnetic switch controlled power supply isolator and thyristor commutating circuit |
| 01/26/2000 | EP0759215A4 Pulse power generating circuit with energy recovery |
| 01/20/2000 | DE19932594A1 Saturable choke for pulsed laser |
| 01/19/2000 | EP0894349A4 Method and apparatus for eliminating reflected energy due to stage mismatch in nonlinear magnetic compression module |
| 12/29/1999 | WO1999067875A2 High voltage pulse generation device for magnetron |
| 12/28/1999 | US6007682 Amplifying low voltage pulses from corona discharge to generate high voltage pulses; establishing time-spaced high voltage resonant ac voltage waveforms; increasing the magnitudes to a saturation level and maintaining |