Patents
Sitemap › G05 - Controlling; Regulating › G05F - Systems for regulating electric or magnetic variables › 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
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)
11/2008
11/06/2008US20080272752 Pulse adding scheme for smooth phase dropping at light load conditions for multiphase voltage regulators
11/06/2008US20080272751 Parameter control circuit and method therefor
11/06/2008US20080272750 Device
11/06/2008US20080272748 Power Factor Correction (PFC) Controller and Method Using a Finite State Machine to Adjust the Duty Cycle of a PWM Control Signal
11/06/2008US20080272747 Programmable power control system
11/06/2008US20080272746 Power factor correction controller with switch node feedback
11/06/2008US20080272745 Power factor correction controller with feedback reduction
11/06/2008US20080272744 Power control system using a nonlinear delta-sigma modulator with nonlinear power conversion process modeling
11/06/2008DE102007021147A1 Power supply switching-off device for e.g. TV set, has current sensor detecting standby-current, where automatic switching off of power supply takes place after attached devices such as TV set, are in standby operation
11/06/2008DE102007021066A1 Selbstaufhaltendes Elektrogerät Selbstaufhaltendes appliances
11/06/2008DE102007021065A1 Elektrogerät Household appliances
11/05/2008EP1987409A2 Universal input device for a tap changer
11/05/2008EP1493070B1 Circuit arrangement for regulating voltage
11/05/2008EP0948123B1 Protecting method for inrush current preventing resistor
11/05/2008CN201146469Y High-power stepless voltage-regulating apparatus
11/05/2008CN201146465Y Frequency converter circuit with compensation mechanism
11/05/2008CN201146463Y Two-in-one voltage-releasing voltage stabilizer
11/05/2008CN201146402Y Constant-current safety charger
11/05/2008CN201146223Y Pressure-equalizing device for monomer battery voltage of each lithium battery set
11/05/2008CN201145864Y Numeric control constant-current source
11/05/2008CN101300537A Voltage regulator with shunt feedback
11/05/2008CN101299574A Method and apparatus for active power factor correction without sensing the line voltage
11/05/2008CN101299573A Method and apparatus for active power factor correction
11/05/2008CN101299346A High voltage generator circuit and flash device including the same
11/05/2008CN101299157A Switch off control circuit of low-voltage difference linearity voltage stabilizer
11/05/2008CN100431249C Difference sum dc-dc converter and method thereof
11/05/2008CN100431248C Semiconductor integrated circuit equipment
11/05/2008CN100431245C Dual-slope adaptive frequency controller for adjusting power supply conversion
11/05/2008CN100430856C Reference voltage generator and method for generating a reference voltage
11/05/2008CN100430855C Constant voltage power supply
11/04/2008US7447423 Fan speed control device and method detailed description of the invention
11/04/2008US7446599 Reference voltage generator
11/04/2008US7446598 Bias circuits
11/04/2008US7446596 Low voltage charge pump
11/04/2008US7446594 Booster circuit including an oscillator
11/04/2008US7446589 Pulse generation circuit
11/04/2008US7446559 Method and system for powering an integrated circuit
11/04/2008US7446521 DC DC voltage boost converter
11/04/2008US7446520 PWM controller for a voltage regulator
11/04/2008US7446519 PWM/burst mode switching regulator with automatic mode change
11/04/2008US7446518 Method and apparatus for enhancing voltage regulator transient response
11/04/2008US7446517 Power supply controller and method therefor
11/04/2008US7446516 DC/DC converter with improved stability
11/04/2008US7446515 Compensating NMOS LDO regulator using auxiliary amplifier
11/04/2008US7446514 Linear regulator for use with electronic circuits
11/04/2008US7446513 Dead time control in a switching circuit
11/04/2008US7446512 Resonant switching power supply device
11/04/2008US7446511 Active power conditioner for AC load characteristics
11/04/2008US7446488 Metal halide lamp ballast controlled by remote enable switched bias supply
11/04/2008US7446487 Dimming mode selecting circuit and driving device using the same
10/2008
10/30/2008WO2008130308A1 Device for controlling the current through a pn junction.
10/30/2008WO2007145752A3 Voltage up-conversion circuit using low voltage transistors
10/30/2008US20080266916 Voltage Conversion Device Capable of Enhancing Conversion Efficiency
10/30/2008US20080266740 Overvoltage protection in a power supply
10/30/2008US20080266739 Protection circuit and method therefor
10/30/2008US20080266738 Over-current protection device for a switched-mode power supply
10/30/2008US20080265983 Methods to reduce threshold voltage tolerance and skew in multi-threshold voltage applications
10/30/2008US20080265862 Parallell Arranged Power Supplies
10/30/2008US20080265859 Electronic device for controlled failure
10/30/2008US20080265857 Integrated fet synchronous multiphase buck converter with innovative oscillator
10/30/2008US20080265856 Constant-voltage power circuit
10/30/2008US20080265855 Power regulator circuitry for programmable logic device memory elements
10/30/2008US20080265854 Low Drop Out Voltage Regulator Circuit Assembly
10/30/2008US20080265853 Linear voltage regulating circuit with undershoot minimization and method thereof
10/30/2008US20080265852 Voltage regulator
10/30/2008US20080265851 Power switch-mode circuit with devices of different threshold voltages
10/30/2008US20080265850 Current sensor device
10/30/2008US20080265849 Control apparatus of power conversion circuit and control method thereof
10/30/2008US20080265847 Saturation preventing power factor improving method and apparatus
10/30/2008US20080265845 Specially improved automotive replacement voltage regulator
10/30/2008US20080265808 Motor Drive Voltage-Boost Control
10/30/2008US20080265802 System and Method for Controlling Lighting Systems
10/30/2008US20080265796 Light management system device and method
10/30/2008US20080265274 Light emitting diode element having a voltage regulating capability
10/30/2008DE102007018343A1 Aktivfilter mit einer Multilevel-Topologie Active filter with a multi-level topology
10/29/2008EP1986306A1 Power supply system
10/29/2008EP1761831A4 Gate driver output stage with bias circuit for high and wide operating voltage range
10/29/2008CN201142637Y Adjustable voltage circuit
10/29/2008CN201142564Y Control and protection circuit for controlling and protecting switch electric appliance
10/29/2008CN201142031Y Programmable constant-current source output device controlled by single-chip
10/29/2008CN201142030Y Electric power control circuit and signal switching transmission equipment with the same
10/29/2008CN101297608A Method and device for operating ultra-high voltage short-arc discharge lamp
10/29/2008CN101297253A Power factor correction boost circuit
10/29/2008CN101297252A Using pulse width modulation in the control of load sharing between paralleled power supplies
10/29/2008CN101296547A Method for driving lamps, driving circuit for performing the same and liquid crystal display device having the same
10/29/2008CN101295931A AC power source current output stabilization and converting circuit, converter and conversion method
10/29/2008CN101295536A Booster circuit and memory structure using the same
10/29/2008CN101295189A Voltage regulating circuit and method for providing regulated output voltage
10/29/2008CN101295188A DC small current constant-current source and calibration method thereof
10/29/2008CN101295187A Pressure-controlled current source and bipolar controllable electric power
10/29/2008CN100429866C Feedback circuit adapted for series resonance dc-dc converter
10/29/2008CN100429764C Semiconductor integrated circuit device and switching power source device using the same
10/29/2008CN100429599C Double-controlling voltage stabilizer
10/28/2008US7444530 Standby circuit for an electrical device
10/28/2008US7444252 Linearizer circuit
10/28/2008US7443702 High voltage start up circuit for power converters
10/28/2008US7443231 Low power reference voltage circuit
10/28/2008US7443230 Charge pump circuit
10/28/2008US7443195 Method of transparently reducing power consumption of a high-speed communication link
10/28/2008US7443152 Boost DC-DC converter and semiconductor device having boost DC-DC converter
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