| Patents for H02M 5 - Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases (13,094) |
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| 03/30/1988 | CN87211918U Governor for pendent fan |
| 03/30/1988 | CN87205998U Contact type voltage regulator |
| 03/23/1988 | CN87202471U Multi-purpose safety socket |
| 03/22/1988 | US4733342 Power supply for an inductive user, particularly a gradient coil |
| 03/22/1988 | US4733340 Apparatus for stabilizing turbine-generator shaft torsional oscillations |
| 03/08/1988 | US4730242 Static power conversion and apparatus having essentially zero switching losses |
| 03/02/1988 | CN87200816U Flash-shocking alternating current (continuous current) power supply |
| 03/01/1988 | US4728866 Power control system |
| 03/01/1988 | US4728806 DC link variable speed constant frequency power source paralleling controls |
| 02/24/1988 | CN85204484U Thyristor ac control device |
| 02/10/1988 | CN86202300U Energy-saving and life-prolonging ac voltage regulator |
| 02/03/1988 | EP0254911A1 Rectifier circuit and method for its controling |
| 02/03/1988 | CN86106905A Duplicated ac-ac frequency-changing speed regulation device for ac motors |
| 02/02/1988 | US4723189 Negative sequence detector for a continuous wave frequency transducer |
| 01/26/1988 | US4721897 Reactive power processing circuit for a current source GTO invertor |
| 01/20/1988 | EP0253265A1 Process for putting into operation a converter control from a current-source inverter with phase-sequence quenching |
| 01/19/1988 | US4720776 DC bus shorting apparatus and method for polyphase AC inverter |
| 01/19/1988 | CA1231755A1 Interlaced pulse-width modulated unrestricted frequency changer system |
| 01/13/1988 | EP0252898A2 Three-phase induction motor drive with frequency converter control |
| 01/13/1988 | CN87104591A Method for controlling circulatory converter and their arrangement |
| 01/12/1988 | US4719554 Method for protecting two static converters with direct-current link from overcurrents |
| 01/12/1988 | US4719550 Uninterruptible power supply with energy conversion and enhancement |
| 01/12/1988 | CA1231399A1 Low core loss rotating flux transformer |
| 01/07/1988 | EP0251068A2 AC motor drive apparatus |
| 01/07/1988 | EP0250718A1 Current supply for an inductive load, especially a gradient coil with a control and regulation device |
| 01/07/1988 | EP0250552A1 Power converter for an electrically-compensated constant speed drive |
| 12/30/1987 | WO1987007988A1 Switched capacitor induction motor drive |
| 12/29/1987 | US4716515 Switched capacitor induction motor drive |
| 12/29/1987 | US4716511 Surge current-limiting circuit |
| 12/23/1987 | EP0250008A1 Method and apparatus for halving the rotational speed of an electromotor |
| 12/23/1987 | CN86206076U Ac voltage-stabilizing regulator |
| 12/17/1987 | WO1987007787A1 Ac to ac converter |
| 12/16/1987 | EP0249083A2 Current supply device |
| 12/16/1987 | CN86103420A New type welding transformer |
| 12/15/1987 | US4713745 Vector-controlled unrestricted frequency changer (UFC) system and variable speed AC motor drive using such a system |
| 12/15/1987 | US4713744 Fractional frequency converter using zero switching of input frequency halfwaves |
| 12/15/1987 | US4713619 Electronic device for feeding ion pump |
| 12/09/1987 | EP0248550A1 Voltage control system |
| 12/09/1987 | EP0248448A1 Polyphase phase angle control |
| 12/09/1987 | CN87101640A Device for stabilizing torsional-vibration of turbogenerator shaft |
| 12/03/1987 | DE3618348A1 Device for operation of a resistance welding machine, or of another pulsed-power load |
| 12/01/1987 | US4710698 Phase-controlled automatic switching circuit |
| 11/24/1987 | US4709317 Inverting apparatus |
| 11/24/1987 | US4709132 Saturation monitoring arrangement and method of control for a frequency-converter welding deivce |
| 11/24/1987 | CA1229656A1 Variable frequency controller |
| 11/19/1987 | DE3616312A1 Method for driving thyristors of a primary controller, said thyristors being connected in reverse parallel |
| 11/17/1987 | CA1229381A1 Self-controlled variable inductance with gaps |
| 11/11/1987 | EP0244743A2 Two-wire switch |
| 11/10/1987 | US4706184 Fractional frequency multiplier |
| 11/10/1987 | US4706183 Bridge-type frequency multiplier |
| 11/10/1987 | US4706182 RF high-voltage power supply |
| 11/10/1987 | US4706178 Power conversion system |
| 11/10/1987 | US4706175 Single phase to polyphase bridge-type frequency multiplier |
| 11/10/1987 | US4706174 Single phase to multiphase frequency multiplier |
| 11/10/1987 | US4705995 Control circuit for airless spray gun |
| 11/05/1987 | DE3614433A1 Method and device for digital brightness control |
| 11/04/1987 | EP0244186A2 Electronic power supply |
| 11/04/1987 | CN87100103A Control method for electric power converting apparatus and their arrangement |
| 10/31/1987 | CN86209777U Multi-functional connector for electrical appliances |
| 10/27/1987 | US4703248 Switching arrangement for full-wave power control which is insensitive to mains voltage fluctuations |
| 10/21/1987 | CN86103950A Automatic round the clock lamp switch for prolonging the lifetime of the lamp |
| 10/13/1987 | CA1228118A1 Soft-starting phase-control circuit for low voltage load |
| 10/08/1987 | DE3610112A1 Stairwell light time switch |
| 10/07/1987 | EP0239806A1 Apparatus for stabilizing turbine-generator shaft torsional oscillations |
| 09/30/1987 | CN87100351A Method of controlling transducer arrangement |
| 09/29/1987 | US4697230 AC power supplied static switching apparatus having energy recovery capability |
| 09/24/1987 | DE3610044A1 Device for common asymmetry protection of lossy series-tuned circuits |
| 09/23/1987 | EP0237733A2 Circuit for feeding a lamp |
| 09/23/1987 | EP0237551A1 Single to three-phase voltage converter |
| 09/22/1987 | US4695932 Superconductive energy storage circuit |
| 09/22/1987 | US4695776 Power converter for an electrically-compensated constant speed drive |
| 09/22/1987 | US4695739 Multi-function switch-controlled lamp circuit |
| 09/16/1987 | EP0236826A2 Control method and control arrangement for a current converter drive with d.c. voltage intermediate circuit |
| 09/16/1987 | CN86200311U Power socket being able to regulate voltage |
| 09/10/1987 | DE3700690A1 Device for controlling a power converter |
| 09/09/1987 | EP0235578A2 Current supply device for a load formed with parallel oscillating circuits mounted individually in parallel on a bus bar |
| 09/08/1987 | US4692671 Electrically-compensated constant speed drive |
| 09/02/1987 | EP0234293A2 Reactive power processing circuit for a current source GTO invertor |
| 09/01/1987 | US4691274 Modular electronic power supply |
| 08/25/1987 | US4689735 Power supply for single-phase traction system |
| 08/19/1987 | EP0232702A2 Method and apparatus for controlling power converter |
| 08/18/1987 | US4687985 Two terminal control switch having a main switch and a saturable current transformer whose primary winding is series connected with the main switch |
| 08/12/1987 | EP0231315A1 Induction motor drive arrangement |
| 08/12/1987 | CN86201717U Voltage-regulating and energy-saving plug seat |
| 08/11/1987 | CA1225430A1 Gas discharge lamp dimming system employing switching contact inputs |
| 08/05/1987 | EP0231023A2 Circuit arrangement with a controlled rectifier bridge fed by a multi- or mono-phase AC voltage and an inverter fed by this bridge |
| 08/05/1987 | CN86100684A Changing from three-phase to two-phase and the three-phase equilibrium transformer |
| 08/05/1987 | CN85105702A Electric power controller |
| 08/04/1987 | US4685049 Unrestricted frequency changer switch topology |
| 08/04/1987 | US4685042 Modulator control for inverter |
| 08/04/1987 | US4684822 Lamp dimmer circuit |
| 07/30/1987 | DE3602635A1 Circuit arrangement for converting a single-phase or multi-phase voltage into a DC voltage |
| 07/30/1987 | DE3602160A1 Shaft generator system having a DC intermediate circuit, especially for ships |
| 07/29/1987 | EP0230358A2 RF high voltage power supply |
| 07/29/1987 | CN86108659A 逆变器 Inverter |
| 07/23/1987 | DE3701208A1 Control method for an invertor |
| 07/22/1987 | CN87100105A Pulse width modulation controlled type electric power converter controller |
| 07/21/1987 | US4682266 Ozonator power supply employing a current source inverter |
| 07/14/1987 | US4680693 Continuous high d.c. voltage supply particularly for an X-ray emitter tube |
| 07/14/1987 | US4680686 Electric 3-phase supply device for an ozonizer |