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7602158 |
Power circuit for generating non-isolated low voltage power in a standby condition
A power circuit generating a non-isolating low voltage power supply using a capacitive AC voltage drop in standby. Specifically, the power circuit includes an AC connector that generates a first AC...
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7505289 |
Flyback DC/DC converter using clamp diode
Provided is a flyback DC/DC converter for a power supply. In the flyback DC/DC converter, a flyback driver unit provides a primary current. A transformer includes a plurality of secondary coils for...
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7482930 |
Limiter for controlling overvoltage and RFID tag having the same
A limiter for controlling an overvoltage and an RFID tag having the same are provided. The limiter includes a first limiter part and a second limiter part serially connected to the first limiter...
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7468897 |
Rectifier without active switches
In this power converter, a first capacitor for stepping down of voltage, a first diode for half-wave rectification, and a second capacitor for smoothing are interposed between first and second...
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7339485 |
Rectifier for supplying double voltage and RFID tag thereof
Disclosed is a rectifier for supplying double voltage and an RFID tag thereof. The rectifier includes a charging part for charging an input voltage induced to input ends by a received radio...
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7307859 |
Circuit for reduction of voltage stress between windings
The present invention is a high voltage power converter having primary and secondary winding sets in a single planar layer stacked in increasing voltage and arranged without the use of a conductor....
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7304872 |
Power supply
A modular, low weight impedance dropping power supply with battery backup is disclosed that can be connected to a high voltage AC source and provide electrical power at a lower voltage. The design...
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7257010 |
Power supply circuit
A power supply circuit comprises a bridge circuit that has four rectifier elements connected and produces a rectified voltage between a positive side output terminal and a negative side output...
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7236380 |
Rectifier system having different rectifier elements
A rectifier system, in particular a rectifier bridge for a three-phase generator, includes a plurality of rectifier elements, specifiable rectifier elements being different from the other rectifier...
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7209374 |
Capacitor-input positive and negative power supply circuit
There is provided a power supply circuit having a simple configuration which is capable of eliminating an adverse effect due to pumping operation. The capacitor-input positive and negative power...
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7184287 |
Rectifier clamping circuit with reverse energy recovery
An energy-feedback clamping circuit of a power converter is proposed. The converter includes a transformer coupled to a full-wave rectifier circuit. The clamping circuit includes: two clamping...
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7136293 |
Full wave series resonant type DC to DC power converter with integrated magnetics
A full wave DC/DC converter magnetically integrates into the transformer assembly the functions of the resonant inductor, magnetizing inductor and the output filter inductor. The primary and the...
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7106605 |
DC converter circuit with overshoot protection
A DC-DC converter comprises an input circuit that stores inductive energy that includes a first switch that releases the stored inductive energy. A transformer includes a primary winding that...
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7092268 |
Isolating power supply
An isolating power supply for electrical equipment comprises a transformer having an input for a mains alternating current (AC) power supply, a rectifier by which the output of the transformer can...
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7072197 |
Isolated low-voltage power supply source
An isolated circuit of low-voltage supply of a control circuit of a high-voltage load, in or upstream of a fullwave three-phase rectifying bridge, comprising a first low-voltage capacitor having a...
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7061781 |
Circuit arrangement for operating light sources
In a circuit arrangement for operating light sources, inexpensive technologies for power factor correction can be used in combination. A resonant capacitor in a reactance network for coupling the...
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7049921 |
Auto-transformer for use with multiple pulse rectifiers
Zig-zag connected, phase shifting, auto-transformers that provides the inherent ability to block the flow of zero sequence currents that are associated with multiple-pulse rectifiers. The...
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7034604 |
Communications device powered from host apparatus
A communications device, such as a transceiver, is used with a fiber optic communication line, wherein the communications device is powered from a host device. A voltage supply circuit, which...
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7012824 |
Voltage converting method and voltage converting apparatus using large electrolytic condenser
A voltage converting method and a voltage converting apparatus using a large electrolytic condenser are provided. In the method according to an embodiment of the invention, when the level of an...
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6992904 |
Power converter module with a voltage regulating circuit
A power converter module provides a regulated direct current voltage to a load, and includes a rectifier, a metal thin film capacitor, and a voltage regulating circuit. The rectifier has input...
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6982884 |
Autotransformers to parallel AC to DC converters
An 18-pulse converter is constructed using two, high zero-sequence impedance, phase-shifting autotransformers to parallel two 3-phase bridge converters. A third 3-phase bridge converter is directly...
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6980449 |
Voltage detecting circuit and power converter having the same
A voltage detecting circuit including an impedance converter, an energy storage element, a current source and a comparing circuit is disclosed. The impedance converter is used for converting a high...
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6909622 |
Quasi active power factor correction circuit for switching power supply
A switching power supply AC-DC-DC or AC-DC-AC with power factor corrector function is provided. The switching power supply circuit includes a quasi active shaping function that shapes an input...
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6906476 |
Power control system for reducing power to lighting systems
A power control system is disclosed for controlling the power supplied to a lighting system and limiting power during time of peak demands and the like wherein the lighting system includes a power...
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6882014 |
Protection circuit for MOS components
A protection circuit for MOS components. In the protection circuit, a bypass PMOS transistor has a gate, a source and a substrate, all coupled to a first voltage node and a drain coupled to a gate...
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6778412 |
Synchronous converter with reverse current protection through variable inductance
A DC-DC converter includes a reverse current detector for detecting a reverse current and a reverse current suppressor for increasing an input-output conversion ratio when a reverse current is...
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6738274 |
Power supply with integrated bridge and boost circuit
An alternating current to direct current switching power supply, with power factor correction, and having an integrated rectifying bridge and boost circuit.
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6717830 |
MOS circuit for lowering forward voltage of diodes
A circuit for lowering the effective voltage drop of a semi-conductor diode. The circuit includes a first Metal Oxide Semi-conductor (MOS) device connected in parallel with the diode. A bias...
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6703886 |
Circuit arrangement for rectifying a signal
In a circuit arrangement for rectifying a signal, in which two transconductors are controllable with opposite phase by means of the signal to be rectified, the outputs of the transconductors are...
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6687143 |
Rectifying circuit and switching power supply device having the same
A rectifying circuit having a pair of input terminals at which voltage having an AC waveform appears, a plurality of first rectifying elements 41, a plurality of second rectifying elements 42, ...
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6650557 |
18-pulse rectification system using a wye-connected autotransformer
An electrical AC-DC power conversion system featuring 18-pulse rectification and utilizing a low weight wye-connected phase shifting autotransformer ( 500 ) supplied from a 3-phase AC source ( 40 )...
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6625045 |
Multiphase modular power module employing star link topography
A power module for a power system adapted to employ a star link topography. The power module includes a star section having an internal clock connection and a star link connection. The power system...
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6614130 |
Balanced modular power management system and method
An electrical distribution system and method has storage battery mechanism of very large equivalent capacitance providing excellent ripple filtering and an ideal path to ground, and filter...
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6583998 |
Power supply regulating having novel charging circuitry
A power supply constructed and arranged so that the power supply is charged during an interval during the rising edge and during an interval during the falling edge, and so that the charging...
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6577072 |
Power supply and LED lamp device
An LED lamp device of the invention includes a power supply unit ( 102, 103 ) supplied with an alternating-current power supply voltage, and an LED lamp ( 106 ) constituted by one or a plurality of...
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6538910 |
Rectifier system, preferably for a three-phase generator for motor vehicles
A three-phase bridge rectifier system is proposed, having three rectifier paths, in which two rectifier elements at a time are in series, each rectifier path between the rectifier elements being...
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6535407 |
DC/DC converter having a piezoelectric transformer and rectification-smoothing circuit
A DC/DC converter is provided that includes a switch device for converting a DC voltage into an AC voltage, a piezoelectric transformer for changing the AC voltage and a current doubler type...
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6438008 |
Transient current suppression circuitry for reducing noise of battery floating across input of voltage polarity switch
Transient current pulses/spikes generated by switching components of a battery plant are restricted from application to a floating battery, by suppressing circuitry which is connected to the...
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6438001 |
Circuit arrangement
A description is given of a circuit arrangement for converting an input AC voltage into a rectified output voltage with a rectifier circuit (G) and a charging capacitor (C HV ) downstream in the...
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6407936 |
Capacitive boost for line harmonic improvement in power converters
AC line harmonics are reduced in an AC-powered DC power supply by providing a boost circuit which, during the positive half-cycle of the AC input, adds the charge of a boost capacitor to the AC...
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6314008 |
Adjustable low spurious signal DC-DC converter
The present invention uses an AC signal and an external DC control voltage to generate a plurality of levels of output DC voltages. The level of the output voltage is determined by the DC control...
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6301138 |
Data carrier with load modulation means and with improved power supply in the process of load modulation
In a data carrier (1) having a transmission coil (2) and having an integrated circuit (3) connected to the transmission coil (2) the integrated circuit includes rectifier means (9), energy storage...
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6301131 |
DC power supply circuit
The DC power supply circuit has a bleeder circuit 3 connected in parallel to a smoothing capacitor C1. The bleeder circuit 3 is adapted to permit electric current to pass therethrough when a...
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6300748 |
Transformerless power supply circuit with a switchable capacitive element
A power supply circuit for providing a DC output signal from an AC input signal by (1) coupling an AC source to the DC output terminal and to a capacitor when the AC input signal is within a...
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6292381 |
AC to DC power supply with supplemental energy storage
An AC to DC power supply is disclosed which converts an AC input voltage to a DC output voltage and supplies the DC output voltage to power devices. The power supply includes a transformer for...
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6275400 |
Dropping impedance power supply
A dropping impedance power supply comprising a motor is series with a voltage regulator. When the motor operates, the power supply transforms an a.c. line voltage to a d.c. voltage. The motor drops...
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6272032 |
Rectifier with midpoint feed
The invention relates to a rectifier with midpoint feed, comprising a first and a second input terminal (A,B), which form an input of the rectifier, a first and a second output terminal (P,M),...
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6272030 |
Dividing, isolating, and rectifying circuit and standby power source
First, second and third capacitors (11, 12, 13) having predetermined capacitance values are connected in series in a commercial alternating current line. A rectifier bridge (14, 15, 16, 17)...
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6256213 |
Means for transformer rectifier unit regulation
Transformer rectifier units (TRU) for the conversion of AC to regulated DC are disclosed. One aspect of a TRU according to the invention is output boost regulation by monitoring the output from a...
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6215678 |
Arc plasma-joule heated melter system for waste treatment and resource recovery
Methods and apparatus for treating waste are provided. Waste is converted in an arc plasma-joule heated melter system utilizing one or more arc plasma electrodes and a plurality of joule heating...
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