| 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) |
|---|
| 04/28/1999 | CN1215215A Method of monitoring functional capability of tap selector |
| 04/28/1999 | CN1215212A Method and device for reducing bias current in reference voltage circuit |
| 04/27/1999 | US5898296 Isolation regulator |
| 04/27/1999 | US5898235 Integrated circuit with power dissipation control |
| 04/27/1999 | CA2151683C Redundant power mixing element with fault detection for dc- to-dc converter |
| 04/22/1999 | CA2250625A1 Method of monitoring a tap changer |
| 04/21/1999 | EP0910157A1 Step-up continuous mode DC-to-DC converter with integrated fuzzy logic current control |
| 04/21/1999 | EP0910002A1 Method for providing a current of high accuracy |
| 04/21/1999 | CN2315697Y Current contactless low voltage power factor automatic compensator |
| 04/21/1999 | CN2315584Y Controller for power factor |
| 04/20/1999 | US5896281 Power conditioning system for a four quadrant photovoltaic array with an inverter for each array quadrant |
| 04/20/1999 | US5895989 Power supply unit and connector connection failure detection method |
| 04/20/1999 | US5895979 Power distribution network incorporating a voltage support transformer and process of use |
| 04/14/1999 | EP0908000A1 Wireless selective tripping of ac power systems connected in parallel |
| 04/14/1999 | EP0696365A4 System for controlling an electrostatic precipitator using digital signal processing |
| 04/14/1999 | CN1042991C 整流器控制系统 Rectifier control system |
| 04/13/1999 | US5894396 Inrush current protection circuit |
| 04/13/1999 | US5894244 Semiconductor potential supply device and semiconductor memory apparatus using the same |
| 04/13/1999 | US5894216 Solid-state saturable reactor emulator |
| 04/13/1999 | US5894215 Shunt voltage regulator utilizing a floating reference voltage |
| 04/08/1999 | WO1999017590A1 Energy saving lighting controller |
| 04/08/1999 | WO1999017179A1 Multiple output programmable reference voltage source |
| 04/08/1999 | WO1999004475A3 Method and device for regulating alternating voltage |
| 04/08/1999 | DE19739008C1 Circuit for limiting load current with 1st transistor connected as series regulator |
| 04/07/1999 | CN2313330Y Switch type and regulation type dc. voltage-stabilized source |
| 04/07/1999 | CN1042879C Static reactive power compensating equipment |
| 04/06/1999 | US5892647 Overcurrent detection circuit |
| 04/06/1999 | US5892392 Device for setting a bias source at stand-by |
| 04/06/1999 | US5892390 Internal power supply circuit with low power consumption |
| 04/06/1999 | US5892381 Fast start-up circuit |
| 04/06/1999 | US5892354 Voltage control apparatus and method for power supply |
| 04/06/1999 | US5892353 Power supply apparatus |
| 04/06/1999 | US5892352 Synchronization of the switching action of hysteresis current controlled parallel connected power electronics systems |
| 04/01/1999 | WO1999015943A1 High impedance bias circuit for ac signal amplifiers |
| 04/01/1999 | WO1998048334A9 Precision bandgap reference circuit |
| 04/01/1999 | CA2270938A1 High impedance bias circuit for ac signal amplifiers |
| 03/31/1999 | EP0905898A2 An improved apparatus for current pulse generation in voltage down converters |
| 03/31/1999 | EP0905877A1 Oscillation circuit, electronic circuit, semiconductor device, electronic equipment and clock |
| 03/31/1999 | EP0905597A1 A method and apparatus for reducing the bias current in a reference voltage circuit |
| 03/31/1999 | EP0904576A1 Power supply circuit |
| 03/31/1999 | EP0760114B1 Dual voltage voltage regulator with foldback current limiting |
| 03/31/1999 | CN1212551A Power supply adapter circuit |
| 03/31/1999 | CN1212507A Improved apparatus for current pulse generation in voltage down converters |
| 03/30/1999 | US5889429 Semiconductor integrated circuit and semiconductor integrated circuit device |
| 03/30/1999 | US5889393 Voltage regulator having error and transconductance amplifiers to define multiple poles |
| 03/30/1999 | US5889391 Power supply having combined regulator and pulsing circuits |
| 03/30/1999 | US5889390 Circuit arrangement for converting a DC voltage into another DC voltage with simultaneous regulation of the emittable voltage at a predetermined value |
| 03/25/1999 | DE3701925C1 Voltage supply device for electronic device with variable load |
| 03/25/1999 | DE19741464A1 Temperature-compensated current regulation unit |
| 03/24/1999 | EP0903839A1 Voltage regulator |
| 03/24/1999 | EP0793869B1 Series compensator inserting real and reactive impedance into electric power system for damping power oscillations |
| 03/24/1999 | CN2311793Y Automatic on-off device for voltage stabilizer |
| 03/24/1999 | CN1212061A Method and device for automatically switching three-phase voltage for power-saving transformer |
| 03/23/1999 | US5886640 Power monitoring circuit for the central processing unit on a computer circuit board |
| 03/23/1999 | US5886570 Inverter circuit biased to limit the maximum drive current to a following stage and method |
| 03/23/1999 | US5886569 Semiconductor integrated circuit device with control circuit for controlling an internal source voltage |
| 03/23/1999 | US5886568 Open-loop MR biasing circuit with high power supply and common mode rejection |
| 03/23/1999 | US5886565 Reference voltage generating circuit having an integrator |
| 03/23/1999 | US5886511 Temperature insensitive foldback network |
| 03/23/1999 | US5886509 Voltage stabilizer having an inphase regulator |
| 03/23/1999 | US5886508 Multiple output voltages from a cascaded buck converter topology |
| 03/23/1999 | US5886506 Power supply circuit |
| 03/18/1999 | WO1999013390A1 Circuit arrangement and method for protecting a control element against overcurrent |
| 03/18/1999 | DE19813707A1 Voltage level conversion circuit |
| 03/17/1999 | CN2311012Y Auto-control load kw-hr meter box |
| 03/16/1999 | US5883546 Array device having functional circuit for a plurality of channels |
| 03/16/1999 | US5883506 Power supply with voltage stabilizing control circuit |
| 03/16/1999 | US5883505 Driver circuit for MOS transistor switches in switching regulators and related methods |
| 03/16/1999 | US5883504 Power supply unit |
| 03/16/1999 | US5883503 Voltage compensation system |
| 03/16/1999 | US5883501 Power supply circuit |
| 03/11/1999 | WO1999012243A1 Method and device for offsetting network voltage distortions |
| 03/11/1999 | WO1999012242A1 Method and device for improving the quality of voltage of a secondary supply unit |
| 03/11/1999 | WO1999012240A1 Circuit and method for limiting current for alternating current consumers |
| 03/11/1999 | DE19744465C1 Means for regulation of a multi-contact switch for tapped transformer |
| 03/11/1999 | DE19739246A1 Schaltungsanordnung und Verfahren zum Überlastschutz für ein Schaltelement Circuit arrangement and method for overload protection circuit member |
| 03/11/1999 | DE19728220C1 Voltage regulation method |
| 03/11/1999 | CA2302498A1 Method and device for offsetting network voltage distortions |
| 03/11/1999 | CA2302344A1 Method and device for improving the voltage quality of a secondary supply unit |
| 03/10/1999 | EP0901128A2 Method and apparatus for adjustment and control of an interactive method of recording analog signals with on chip selection of a voltage ramp amplitude |
| 03/10/1999 | EP0901057A2 Current regulation circuit |
| 03/10/1999 | EP0900469A1 Switched-mode power supply arrangement |
| 03/10/1999 | EP0900418A1 Method and apparatus for sensing current in power supplies |
| 03/10/1999 | CN1210338A Conductor integrated circuit device with improved characters at low voltage ranges |
| 03/10/1999 | CN1042482C Tranforming device and air conditioner using said device |
| 03/09/1999 | US5881015 Internal constant voltage control circuit for memory device |
| 03/09/1999 | US5881014 Semiconductor memory device with a voltage down converter stably generating an internal down-converter voltage |
| 03/09/1999 | US5880625 Temperature insensitive constant current generator |
| 03/09/1999 | US5880581 AC or bidirectional circuit utilizing unipolar capacitors |
| 03/09/1999 | CA2147293C Compound inductors for use in switching regulators |
| 03/04/1999 | DE19738125A1 Verfahren und Vorrichtung zur Kompensation von in einem Netz auftretenden Netzspannungsverzerrungen Method and apparatus for compensating for occurring in a power line voltage distortions |
| 03/03/1999 | EP0899934A1 Adapter circuit of the supply voltage |
| 03/03/1999 | EP0899643A1 Low consumption linear voltage regulator with high supply line rejection |
| 03/03/1999 | CN1209914A Intelligent power supply with staged loading capability |
| 03/03/1999 | CN1209594A Regulation circuit |
| 03/02/1999 | US5877985 Intermediate voltage generating circuit and nonvolatile semiconductor memory having the same |
| 03/02/1999 | US5877984 Method and apparatus for adjustment and control of an iterative method of recording analog signals with on chip selection of a voltage ramp amplitude |
| 03/02/1999 | US5877611 Simple and efficient switching regulator for fast transient loads such as microprocessors |
| 03/02/1999 | US5877536 Level shifter capable of stably producing a level shifted voltage |
| 03/02/1999 | CA2103133C Power switch with inrush current control |