| Patents for G05F 1 - Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems (37,749) |
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| 05/05/1998 | US5747973 Current regulating switch circuit |
| 05/05/1998 | US5747972 Method and apparatus for electronic power control |
| 05/05/1998 | US5747774 Heat fixing apparatus with temperature control based on AC power waves |
| 04/30/1998 | WO1998018296A1 A power control apparatus for lighting systems |
| 04/30/1998 | WO1998018196A1 Control apparatus with reduced quiescent current |
| 04/30/1998 | DE19746113A1 Voltage supply circuit with feedback voltage source |
| 04/29/1998 | EP0838746A1 Voltage regulator with internal generation of a logic signal |
| 04/29/1998 | EP0838745A1 Voltage regulator with automatic selection of the highest supply voltage |
| 04/29/1998 | CN2280311Y Power regulation type regulated power supply used for maintenance |
| 04/29/1998 | CN1180261A Power control apparatus for solar power generation system |
| 04/29/1998 | CN1180183A Power supply circuit for microcomputer |
| 04/28/1998 | US5745357 Regulator circuit and multi-output switching power unit using the regulator circuit |
| 04/28/1998 | US5745355 Wireless selective tripping of AC power systems connected in parallel |
| 04/28/1998 | US5744984 Driver circuit providing controllable battery overload protection |
| 04/28/1998 | US5744944 Programmable bandwidth voltage regulator |
| 04/28/1998 | US5744942 Linear slewing regulator |
| 04/28/1998 | US5744941 Single-wire-connected high-sensitivity dual-mode a.c./d.c. turn-on/turn-off stage for an electronic voltage regulator |
| 04/23/1998 | WO1998016984A1 Method and device for compensating reactive current portions by means of a compensation arrangement with a pulse current rectifier |
| 04/23/1998 | DE19642845A1 Steuergerät mit Ruhestromreduzierung Control unit with quiescent current reduction |
| 04/23/1998 | DE19642596A1 Verfahren und Vorrichtung zur Kompensation von Blindstromanteilen mittels einer Kompensationseinrichtung mit einem Pulsstromrichter Method and apparatus for compensating reactive current components by means of a compensating means with a pulse current converter |
| 04/22/1998 | EP0837382A1 Device for adjusting a voltage |
| 04/22/1998 | CN2279645Y Automatic compensating voltage stabilizer |
| 04/22/1998 | CN2279644Y AC voltage stablization power automatic apparatus for recogniting load and on-off |
| 04/22/1998 | CN2279643Y Wide-range micro electronic AC voltage-stabilized source |
| 04/22/1998 | CN2279642Y Intelligent electronic voltage regulator |
| 04/22/1998 | CN1038171C Method and apparatus for producing plasma arc |
| 04/21/1998 | US5742367 Liquid-crystal display device having a stacked arrangement of an LCD for displaying an image, a liquid crystal shutter, and a solar cell panel |
| 04/21/1998 | US5742153 Power supply for an electronic circuit that measures ac power line signals |
| 04/16/1998 | DE19640305A1 Voltage regulator circuit |
| 04/15/1998 | EP0836130A2 Output driving circuit for use in DC stabilized power supply circuit |
| 04/15/1998 | EP0836123A1 Image heating apparatus |
| 04/14/1998 | US5739678 Voltage-to-current converter with rail-to-rail input range |
| 04/09/1998 | WO1998015054A1 Merged transconductance amplifier |
| 04/09/1998 | DE19621715A1 Current supply switching device for film slide projector light source |
| 04/08/1998 | CN2278298Y Automatic compensator for lead end transforming |
| 04/07/1998 | US5737202 Redundant power supply system |
| 04/07/1998 | US5736887 Five volt tolerant protection circuit |
| 04/07/1998 | US5736884 Device for generating a control signal dependent on a variable resistance value and apparatus comprising such device |
| 04/07/1998 | US5736843 Efficient ultra low drop out power regulator |
| 04/07/1998 | US5736827 Motor driven step switch |
| 04/02/1998 | DE19741194A1 Fault detection apparatus for changeover switch |
| 04/01/1998 | EP0833347A1 Programmable reference voltage source, particulary for analog memories |
| 04/01/1998 | EP0833240A2 Loop control detection circuit |
| 04/01/1998 | CN2277536Y Switch-type AC manostat |
| 03/26/1998 | WO1998012613A1 Solid-state high voltage linear regulator circuit |
| 03/26/1998 | DE19637360A1 Network-coupled photovoltaic device |
| 03/25/1998 | EP0831571A2 Charging control system |
| 03/25/1998 | EP0830650A1 Frequency compensation for a low drop-out regulator |
| 03/25/1998 | CN2277098Y Reactive automatic compensating gear of high-tension network |
| 03/25/1998 | CN2277097Y Program-controlled d.c voltage-stabilized source |
| 03/25/1998 | CN1177128A Method for checking and calibrating three phase electric power instrument |
| 03/24/1998 | US5732028 In a semiconductor device |
| 03/24/1998 | US5731735 Power supply circuit for driving an integrated circuit, wherein the power supply is adjusted based on temperature so that a delay variation within the IC according to temperature may be cancelled |
| 03/24/1998 | US5731696 Voltage reference circuit with programmable thermal coefficient |
| 03/19/1998 | WO1998011476A1 Solid state voltage regulator and methods therefore |
| 03/18/1998 | EP0829042A1 Software controlled latched voltage regulator having wiper switch decoding |
| 03/18/1998 | EP0748535A4 Improved supply voltage detection circuit |
| 03/18/1998 | CN1176465A Internal voltage generating circuit |
| 03/17/1998 | US5729445 Regulated power supply unit with an electronic transformer |
| 03/17/1998 | US5729120 Dynamic voltage regulation stabilization for AC power supply systems |
| 03/11/1998 | CN1176025A Power supply device |
| 03/11/1998 | CN1175751A Abnormality detecting device for phase advancing capacitor |
| 03/10/1998 | US5726941 Semiconductor integrated circuit |
| 03/10/1998 | US5726872 For delivering power from an input voltage source to a load |
| 03/10/1998 | US5726869 Synchronous rectifier type DC-to-DC converter in which a saturable inductive device is connected in series with a secondary-side switching device |
| 03/10/1998 | US5726419 Pulse welding apparatus |
| 03/05/1998 | DE19708206A1 Excess power supply voltage switch-off circuit e.g. for protecting semiconductor element |
| 03/05/1998 | DE19634447A1 Power supply on-board mains voltage regulator e.g. for differential residual current device or DI-accessory |
| 03/04/1998 | EP0827268A1 A system and method for increasing the efficiency of alternating current induction motors |
| 03/04/1998 | EP0827254A2 Power control apparatus for solar power generation system |
| 03/04/1998 | EP0827253A1 Intermittent on/off regulator type DC power supply circuit |
| 03/04/1998 | EP0744118B1 Regulated power supply unit with an electronic transformer |
| 03/04/1998 | CN2275729Y Intelligent DC voltage-stabilized source |
| 03/04/1998 | CN1175324A Series compensator inserting real and reactive impedance into electric power system for damping power oscillations |
| 03/04/1998 | CN1175323A Dynamic power and voltage regulator for an ac transmission line |
| 03/04/1998 | CN1175121A Method fo automatically changing upper, balanced and lower voltage in electric power saving transformer and device of the same |
| 03/04/1998 | CN1175119A System and method for increasing efficiency of alternating current induction motors |
| 03/04/1998 | CA2184674A1 Intermittent on/off regulator type dc power supply circuit |
| 03/03/1998 | US5724477 Compensation for input voltage variation in an electric motor drive |
| 03/03/1998 | US5723974 Monolithic power converter with a power switch as a current sensing element |
| 03/03/1998 | US5723972 Fail-safe common control of multiple alternators electrically connected in tandem parallel for producing high current |
| 03/03/1998 | US5723966 System and method for increasing the efficiency of alternating current induction motors |
| 02/25/1998 | EP0782784B1 Process for regulating a four-quadrant regulator operating as a mains converter |
| 02/25/1998 | CN1174438A Voltage-regulating reactive compensator |
| 02/19/1998 | WO1998007084A1 Fet-based circuits of high efficiency paralleling of power supplies |
| 02/18/1998 | CN1173756A Power inverter |
| 02/17/1998 | US5719758 Inverter control method and inverter apparatus using the method |
| 02/17/1998 | US5719757 Three-phase rectifier circuit having capacitors which are switched into the circuit dependent on the rectifier output voltage |
| 02/12/1998 | WO1998006169A1 Voltage to current converter for high frequency applications |
| 02/11/1998 | EP0823681A2 Soft-start switch with voltage regulation and current limiting |
| 02/11/1998 | CN1173065A Circuit arrangement |
| 02/11/1998 | CN1172978A Voltage to current conversion circuit for converting voltage to multiple current outputs |
| 02/10/1998 | US5717580 Method and control arrangement for DC transmission, and a control device |
| 02/10/1998 | US5717478 Photovoltaic module with liquid crystal display indicator |
| 02/10/1998 | US5717324 Intermediate potential generation circuit |
| 02/10/1998 | US5717319 Method to reduce the power consumption of an electronic device comprising a voltage regulator |
| 02/10/1998 | US5717256 Power supply apparatus and electronic appliance equipped with the power supply apparatus |
| 02/05/1998 | WO1998005125A1 Voltage controlled variable current reference |
| 02/05/1998 | WO1998004964A1 Energy saving power control system |
| 02/05/1998 | CA2261733A1 Voltage controlled variable current reference |