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| Number | Title | Issue Date |
| 8154891 | Methods and apparatus for selectable output DC/DC converter Methods and apparatus for providing a DC/DC converter having a first configuration to output a first voltage level and a second configuration to output a second voltage level. ... | 04/10/2012 |
| 8102686 | Rectifier with PAM controller to force an input current to approximate a sine wave An electric power supply circuit includes a diode bridge circuit (12) for rectifying an alternating current, a switching element (S) for causing a short-circuit for output power of the diode bridge circuit (12), and a PAM control section (15) fo... | 01/24/2012 |
| 8094471 | Power supply using double latch circuit for automatic input voltage range programming A power supply includes a rectifier circuit having a rectifier mode and a voltage doubler mode. An AC switch is coupled to the rectifier circuit and switches the rectifier circuit into the rectifier mode when a higher AC line voltage is supplied and a voltage double... | 01/10/2012 |
| 8085561 | Power supply with integrated concentric high voltage multiplier A high voltage power supply for use in small diameter spaces such as in oil well logging devices includes an AC voltage source and a voltage multiplier circuit. An inside set of parallel capacitors is constructed with an inside common capacitor electrode, an inside ... | 12/27/2011 |
| 7944719 | Voltage multiplier with improved power efficiency and apparatus provided with such voltage multiplier A voltage multiplier comprising a chain of multiplier stages, each multiplier stage (STGj) comprising first and second inputs (IPIj, IP2j) and first and second outputs (OPIj, 0P2j), which first and second outputs of a multiplier stage is coupled to res... | 05/17/2011 |
| 7443704 | AC high voltage detecting device An AC high voltage detecting device includes a high voltage power supply (HVPS) to convert a low voltage into an AC high voltage, a rectifier to rectify the converted AC high voltage into a positive voltage and a negative voltage, a voltage divider to divide the rec... | 10/28/2008 |
| 7443705 | Apparatus and method for power conversion having diode in charging and discharging circuit A power converting apparatus includes a rectifying circuit having a pair of AC power input terminals and a pair of rectified voltage output terminals; a reactor; and a charging and discharging circuit connected between the rectified voltage output terminals. The cha... | 10/28/2008 |
| 7430133 | Apparatus and method for switch connected as a diode in a charge pump A switched-capacitor type voltage regulator is provided. The regulator includes a flying capacitor and switches, including first and second transistors which operate as switches. The switches are arranged to operate such that the flying capacitor is coupled to an in... | 09/30/2008 |
| 7368890 | Power converter with active discharging for improved auto-restart capability A method of operating a power converter in response to an interruption in an input power being provided to the power converter, as well as a power converter capable of performing such method and including a rectifier and an inverter coupled at least indirectly with ... | 05/06/2008 |
| 7366297 | Method and system for converting alternating current to ethernet in-line power According to one embodiment, a method for converting alternating current voltage signals to Ethernet in-line power includes converting an alternating current voltage signal to an approximate direct current voltage signal, adding at least one odd harmonic of the appr... | 04/29/2008 |
| 7333354 | Switch for power factor correction circuits An improved switch for power factor correction circuits includes a six-terminal switch which has a first inductor connecting to a selection line which has a first switch terminal and a second switch terminal, and a second inductor connecting to a conductive line. Wh... | 02/19/2008 |
| 7324354 | Power supply with a digital feedback loop A wide range power supply capable of delivering 20V to 5000V is provided. The power supply of the present invention uses switch mode technology to achieve high overall operating efficiency and is capable of operating from no load to full load without loss of regulat... | 01/29/2008 |
| 7321483 | Power converter A power converter comprising: a rectifier arrangement (D1-D4) having inputs coupled to AC power supply terminals; a pair of series-connected capacitors (C1, C2) coupled across output terminals of the rectifier arrangement; a switch (S1... | 01/22/2008 |
| 7316052 | Closure profile and die plate for extruding same A reclosable pouch includes interlocking male and female closure elements having elongate hollow closure profiles. The male closure profile has a hollow shaft section, and the female closure profile has a channel with at least one hollow side. A set of pleated grip ... | 01/08/2008 |
| 7312596 | Device and method for equalising the charge of serially connected capacitors belonging to a double layer capacitor A device and a method are provided for equalizing the charge of the capacitors belonging to a double layer capacitor. The device includes an individual transformer associated with each individual capacitor and a flyback transformer or a spool, from which the energy ... | 12/25/2007 |
| 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 can be scaled over a wide range of input voltages and over a wide ran... | 12/04/2007 |
| 7305065 | X-ray generator with voltage doubler Between terminals of secondary windings in a high-voltage transformer (3), there are connected in parallel input side terminals of a plurality of diode full bridge circuits each via voltage maintaining means such as a capacitor maintaining a voltage peak valu... | 12/04/2007 |
| 7274579 | Converter circuit and motor driving apparatus A converter circuit for converting an output voltage from an AC power supply includes a rectifier circuit for rectifying the output voltage of the AC power supply; first and second capacitors connected in series, for smoothing the output of the rectifier circuit; an... | 09/25/2007 |
| 7262582 | Switching power supply circuit and electronic apparatus provided therewith In a switching power supply circuit, completion of discharging of a capacitance provided in a soft-start circuit requires a period longer than a cycle with which an activating/deactivating portion switches switching control operation of a driving portion (which perf... | 08/28/2007 |
| 7253798 | Charge pump A charge pump (1) for generating a first output voltage (Vo1) between a first output terminal (E) and a reference terminal (D), and a second output voltage (Vo2) between a second output terminal (F) and the reference terminal (D). The charge pum... | 08/07/2007 |
| 7235891 | Power system having generator driven by engine An apparatus for controlling the operation of power conditioners (10) for supplying the generated power to an external power system such as a commercial power system, in which power conditioners (10) are interconnected to an external power system, the ... | 06/26/2007 |
| 7230471 | Charge pump circuit of LCD driver including driver having variable current driving capability A charge pump circuit of a liquid crystal display driver integrated circuit (LDI) is provided, which can reduce unnecessary current consumption when a load of an output node varies is provided, where, in a gradient mode of a display-on mode, in which an output node ... | 06/12/2007 |
| 7218500 | High-voltage generator and accelerator using same In a high-voltage generator including a CW circuit (high-voltage circuit), where the CW circuit generates a high voltage through booster circuits that are provided for boosting an input voltage and connected to one another in multiple stages, a conductive shielding ... | 05/15/2007 |
| 7215098 | Electrical generating system having capacitative control of alternator regulation The invention provides an electrical generating system comprising an AC electrical generator (G) having an output, and a capacitor arrangement (Ca) provided at the output of the generator and arranged so as to offset a drop of voltage from no-load to full-load occur... | 05/08/2007 |
| 7191735 | Electric animal deterrent for contact with underlying ground system The present invention provides a high voltage pulse generator used for deterring animals where the high voltage pulses are delivered to the animal through an electrical conductor that lays directly on the ground and is not insulated from the underlying ground system... | 03/20/2007 |
| 7190143 | Pulse width modulation (PWM) rectifier with variable switching frequency A method for controlling a device including a plurality of switching devices operated in accordance with a pulse width modulation technique includes receiving a reference voltage signal associated with a first pair of the switching devices. A switching signal is gen... | 03/13/2007 |
| 7180760 | Method of efficiently performing fractional voltage conversion and system comprising efficient fractional voltage converter circuitry Embodiments provide a capacitive voltage multiplier for efficiently producing multiples, including fractional multiples, of a power supply voltage use high, medium and low voltage field effect transistors for switching terminals of various capacitors into and out of... | 02/20/2007 |
| 7170734 | Air ionization device The invention relates to an air ionization device comprising a high voltage line which can be connected to an AC voltage power source and point electrodes which are coupled capacitively to the high voltage line for generating a corona discharge. In order to develop ... | 01/30/2007 |
| 7154730 | High voltage generator for electrostatic painting equipment A generator is provided inside equipment, such as a sprayer, having a high voltage cascade including a voltage-gain transformer and a voltage multiplier arranged at the output of the transformer. The transformer is a double or multiple transformer, including at leas... | 12/26/2006 |
| 7116923 | Fuser provided with auxiliary power supply device to operate with varying power An apparatus for fusing toner with a sheet includes an electricity storage device, a heating unit configured to generate heat based on electric power supplied from the electricity storage device, a fusing member configured to fuse the toner with the sheet through he... | 10/03/2006 |
| 7088597 | High voltage supply device for eliminating a surge voltage A high voltage supply device including a power supply rectifying an externally inputted ac voltage and generating a first dc voltage and a second dc voltage, a controller generating a pulse signal having a predetermined duty ratio and a control signal having a first... | 08/08/2006 |
| 7075770 | Less lethal weapons and methods for halting locomotion A hand-held stun gun incapacitates a human target by generating a series of powerful electrical output pulses of pulse energy of from 0.9 Joules to 10 Joules which generate a series of output current pulses have an RMS current flow of from 100 milliamps to 500 milli... | 07/11/2006 |
| 7059767 | Electronic clinical thermometer An electronic clinical thermometer has a probe including a temperature sensor and a heat flux sensor which are controlled to make measurements at specified time intervals. The measured values are used in solving the equation of heat conduction to estimate the temper... | 06/13/2006 |
| 7050539 | Power supply for an X-ray generator A power supply for X-ray generators which includes at least one inverter (11, 12, 13), at least one transformer (111, 121, 131) and at least one voltage cascade (112, 122, 132) for generating a supply voltage for an X-ray tube (15). In or... | 05/23/2006 |
| 7019959 | Method for forming a printed circuit board and a printed circuit board formed thereby Upper, inner and lower sections (182, 180 and 184) of a PCB (100) are formed with each section having a substrate (140, 150 and 160) having patterned layers of metallization (105 and 110, 115 and 120, and 12... | 03/28/2006 |
| 6999050 | Apparatus for recycling energy in a liquid crystal display An apparatus for recycling energy in a liquid crystal display (LCD) so as to reduce energy loss when the LCD is driven by a driving circuit. The LCD includes two pixels, each of which has a corresponding capacitor and has a corresponding voltage applied to. The pola... | 02/14/2006 |
| 6980450 | High power density inverter and components thereof A compact high-power pure-sinewave inverter amenable to mass manufacturing techniques. Methods for increasing the power rating, power density and/or power conversion efficiency of a sinewave-modulated pulse-width-modulated (PWM) inverter having a either half-bridge ... | 12/27/2005 |
| 6972657 | Power converter and planar transformer therefor A planar transformer includes a primary winding surrounding a portion of a magnetic core. The primary winding is made up of a bundle of individually insulated conductors (wires) in a bundle, and the bundle is itself separately insulated as a whole. A secondary windi... | 12/06/2005 |
| 6960968 | Planar resonator for wireless power transfer A planar resonator and method of manufacture provides contactless power transfer using at least two electrically isolated axis aligned conductive across the transfer interface in a coupled inductor or transformer configuration. Signal or power transfer is then accom... | 11/01/2005 |
| 6954008 | Integrated power supply apparatus for information appliances An integrated power supply apparatus for information appliances includes a power supply input unit, a rectification unit and a voltage boosting unit. The previous design of transforming low voltage to high voltage through a voltage boosting unit (inverter) is change... | 10/11/2005 |
