Patents
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)
05/2005
05/19/2005US20050104567 Underload tapchanging voltage regulators for ease of field replacement and for improved operator safety
05/19/2005US20050104562 Device for regulating the voltage in generators by means of coil tapping and a control relay
05/19/2005US20050104542 LED-switching controller and LED-switching control method
05/19/2005DE19706247B4 Schaltungsanordnung zur Steuerung von Elektromagneten und Regelung des Spulenstroms Circuit arrangement for the control of electromagnets and control of the coil current
05/18/2005EP1531542A2 Inverter apparatus connected to a plurality of direct current power sources and dispersed-power-source system having inverter apparatus linked to commercial power system to operate
05/18/2005CN1618049A Device with controllable impedance
05/18/2005CN1618048A Power redgulator employing sinusoidal refferene
05/18/2005CN1617441A Voltage to current converter and method for converting
05/18/2005CN1617432A Power supply apparatus capable of supplying a stable converted voltage
05/18/2005CN1617416A Household power saver
05/18/2005CN1617406A Overvoltage protection circuit, and power source, power supply system and electronic apparatus
05/18/2005CN1617338A 半导体集成电路 The semiconductor integrated circuit
05/18/2005CN1617215A DC-DC conversion circuit
05/18/2005CN1202447C Linear adjustor
05/17/2005US6895175 Electrical control circuit and method
05/17/2005US6894882 D.C. power supply circuit and electronic apparatus using such circuits
05/17/2005US6894556 Current mirror circuit and current source circuit
05/17/2005US6894554 Step-up circuits
05/17/2005US6894553 Capacitively coupled current boost circuitry for integrated voltage regulator
05/17/2005US6894472 Low leakage CMOS power mux
05/17/2005US6894470 Power supply device and electric appliance employing the same
05/17/2005US6894469 Power supply circuit
05/17/2005US6894465 Power array system and method
05/17/2005US6894462 Ratio adaptive gated oscillator
05/17/2005US6894461 Bidirectional power conversion with multiple control loops
05/17/2005US6894442 Luminary control system
05/17/2005US6894405 Facility for supplying spare or auxiliary power supply to processor device
05/17/2005US6893381 Self-spotting apparatus for free-weights
05/12/2005WO2005043732A1 Multiplier-divider circuit for a pfc controller
05/12/2005WO2004109886A3 Energizing capacitor loads
05/12/2005WO2003098703A3 Circuit arrangement for a photovoltaic system
05/12/2005US20050099742 Semiconductor integrated circuit device
05/12/2005US20050099224 Selecting a reference voltage suitable to load functionality
05/12/2005US20050099211 Voltage to current converter and method for converting
05/12/2005US20050099169 Regulating system
05/12/2005US20050099167 DC-DC conversion circuit
05/12/2005US20050099166 Power converter control for automatic maximum power point tracking
05/12/2005US20050099165 Power controller
05/12/2005US20050099164 Pfc-pwm controller having interleaved switching
05/11/2005EP1530289A1 Voltage to current converter and method for converting
05/11/2005EP1529255A1 Voltage regulator
05/11/2005EP1279084B1 Voltage adapter assembly
05/11/2005EP1018127A4 Power distribution network incorporating a voltage support transformer and process of use
05/11/2005CN1615462A Controllable transformer
05/11/2005CN1614671A Semiconductor device for driving current load device and displaying apparatus
05/11/2005CN1201470C DC-DC converter of synchronous rectification type with improved current sensing
05/10/2005US6891428 Single ended controlled current source
05/10/2005US6891357 Reference current generation system and method
05/06/2005WO2005041393A2 Method and system for power factor correction
05/06/2005WO2005041377A1 Power regulation having power consumption reduction with reversing contactors
05/06/2005WO2005041007A1 A method and a system for powering an integrated circuit, and an integrated circuit especially designed to be used therein
05/06/2005WO2005040951A1 Voltage trimming circuit
05/05/2005US20050093616 Voltage reference generator with negative feedback
05/05/2005US20050093613 Voltage booster
05/05/2005US20050093528 Multiplier-divider circuit for a PFC controller
05/05/2005US20050093527 [pulse width modulation power regulator and power supply system thereof]
05/05/2005US20050093525 Asymmetrical multiphase DC-to-DC power converter
05/05/2005US20050093523 Surge current suppression in power-factor-corrected AC-to-DC converter with capacitive load
05/04/2005EP1528654A1 Circuit for battery/capacitor power source
05/04/2005CN1612459A DC power supply circuit and leakage breaker using same
05/04/2005CN1612456A 半导体电路设备和数据处理系统 Semiconductor circuit device and a data processing system
05/04/2005CN1612455A Power circuit
05/04/2005CN1612454A Asymmetrical multiphase DC-to-DC power converter
05/04/2005CN1611999A 电源电路 Power circuit
05/03/2005US6889122 Load controller and method to enhance effective capacity of a photovoltaic power supply using a dynamically determined expected peak loading
05/03/2005US6888401 Current mode current sense circuits and methods
05/03/2005US6888399 Semiconductor device equipped with a voltage step-up circuit
05/03/2005US6888339 Bus voltage control using gated fixed energy pulses
05/03/2005US6888324 Ozone generator having a mercury lamp with a filament temperature detective circuit
05/03/2005US6888323 Light management system device and method
05/03/2005US6888322 Systems and methods for color changing device and enclosure
04/2005
04/28/2005WO2005039239A2 Ballast protecting device
04/28/2005WO2005039029A2 Total feed forward switching power supply control
04/28/2005WO2005039026A2 A high precision digital-to-analog converter with optimized power consumption
04/28/2005US20050088856 Power supply apparatus capable of supplying a stable converted voltage
04/28/2005US20050088223 Apparatus for regulating voltage
04/28/2005US20050088222 Chip enabled voltage regulator
04/28/2005US20050088207 Method and apparatus for driving LED's
04/28/2005US20050088206 Circuit arrangement for recognizing and outputting control signals, integrated circuit including the same, and use thereof
04/28/2005US20050088203 Tail current generator circuit for bipolar/MOS differential pair to set precise transconductance
04/28/2005US20050088163 Semiconductor integrated circuit
04/28/2005US20050088162 Voltage regulator for physically remote loads
04/28/2005US20050088160 Multi output DC-DC converter
04/28/2005US20050088159 DC-DC converter
04/28/2005US20050088158 Semiconductor circuit device and data processing system
04/28/2005US20050088156 Multi-channel driver interface circuit for increasing phase count in a multi-phase DC-DC converter
04/28/2005US20050088155 Multi-sense voltage regulator
04/28/2005US20050088154 Voltage regulator
04/28/2005US20050088153 Constant voltage power supply circuit
04/28/2005US20050088152 Regulator circuitry and method
04/28/2005US20050088151 Switching dc-to-dc converter with multiple output voltages
04/28/2005US20050088150 I/O interface circuit of integrated circuit
04/28/2005US20050088138 Power circuit
04/28/2005US20050087824 High performance fet with laterally thin extension
04/28/2005US20050086800 Method for improved traceability of components used in manufacturing of a printed circuit board (PCB)
04/27/2005CN2696015Y Extreme high precision reference voltage source
04/27/2005CN1610229A Constant-voltage power supply unit
04/27/2005CN1609744A Power supply network voltage reactive-load remote control real-time optimization control method
04/27/2005CN1609743A Low-noise stablized voltage circuit capable of fast stopping working
04/27/2005CN1609742A Clocked cascading current-mode regulator with high noise immunity and arbitrary phase count