Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Application No. | Application Title | Issue Date |
| 20120106211 | POWER FACTOR AND LINE DISTORTION METHOD AND APPARATUS Today, power distribution systems can be used to supply power to many loads, and since many loads, such as servers, are reactive (i.e., have capacitors and/or inductors), line distortion and power factor can be an issue. Conventional techniques to correct for line disto... | 05/03/2012 |
| 20120069611 | Correction Circuit of a Switching-Current Sample for Power Converters in Both CCM and DCM Operation The present invention provides a correction circuit for a power converter. The correction circuit includes a sampling circuit, a demagnetizing-time circuit, a duty circuit, and a compensation circuit. The sampling circuit generates an average-current signal in response ... | 03/22/2012 |
| 20120026761 | ADAPTIVE CURRENT LIMITER AND DIMMER SYSTEM INCLUDING THE SAME In an embodiment, an adaptive current limiter includes a sense element, a current pass element, and a controller. The sense element includes a first sense terminal coupled to a power supply terminal and a second sense terminal. The sense element generates a sense voltag... | 02/02/2012 |
| 20110188273 | POWER FACTOR CORRECTION STAGE A power factor correction stage comprising: an input terminal configured to receive an input signal; an output terminal configured to provide an output signal; a first converter stage and one or more further converter stages, wherein each of the converter stages is conn... | 08/04/2011 |
| 20110181110 | Smart Power Delivery System and Related Method According to one disclosed embodiment, a smart power delivery system includes a power conversion unit having a communication module and a power management module that can convert mains power into an optimized voltage and limited current used to power an electronic devic... | 07/28/2011 |
| 20110141774 | VARIABLE SPEED DRIVE Systems and methods for improved VSDs are provided. One embodiment relates to an apparatus for common mode and differential mode filtering for motor or compressor bearing protection when operating with VSDs, including conducted EMI/RFI input power mains mitigation. Anot... | 06/16/2011 |
| 20110110127 | POWER FACTOR CORRECTION CIRCUIT The present invention relates to a power factor correction circuit that can reduce distortion of input current in a switching mode power supply. The power factor correction circuit provided in the present invention basically comprises a first inductor which is electrica... | 05/12/2011 |
| 20110096577 | POWER CONVERSION APPARATUS A power conversion apparatus has a rectification circuit provided for converting AC power supplied from an AC power supply into DC power. The rectification circuit has a configuration in which series circuit whose number corresponds to the number of phases of an input A... | 04/28/2011 |
| 20110096576 | POWER FACTOR CORRECTION DEVICE AND CONTROL METHOD THEREOF Proposed are a power factor correction device and its control method capable of obtaining a stable output as the output of a power supply unit while simplifying and miniaturizing the configuration. In the power factor correction device and the control method thereof inc... | 04/28/2011 |
| 20110019442 | POWER CONVERTER The noise generated from a power converter is suppressed by increasing the noise frequency to a level not lower than the maximum frequency of the human audible range. To obtain the frequency of an output current harmonic component as a noise source which has exceeded th... | 01/27/2011 |
| 20110019443 | SERIES VOLTAGE COMPENSATOR AND METHOD FOR SERIES VOLTAGE COMPENSATION IN ELECTRICAL GENERATORS Series voltage compensator connected in series between an electrical generator and an electrical grid that comprises a filter and an electronic power converter per phase. The compensator generates a voltage to dynamically compensate for sudden voltage drops in the elect... | 01/27/2011 |
| 20110013430 | POWER SUPPLY APPARATUS AND ELECTRONIC DEVICE HAVING THE POWER SUPPLY APPARATUS A power supply to improve an EMI characteristic and an electronic device having the power supply. The power supply includes a power converter to convert an alternating current (AC) power applied from outside to a direct current (DC) power, a ground portion to supply a g... | 01/20/2011 |
| 20100182812 | POWER CONVERTER The present invention discloses a power converter with low standby power consumption, used to convert an AC input power to an output DC power, comprising: an EMI filter, coupled to the AC input power to filter the EMI; a TRIAC, coupled to the EMI filter to access the AC... | 07/22/2010 |
| 20100182811 | POWER CONVERTER The present invention discloses a power converter with extremely low standby power consumption for converting an input AC power to an output DC power, comprising: a DC supply voltage generating unit, used for generating a DC supply voltage; a pulse width modulation cont... | 07/22/2010 |
| 20100164407 | SENSING TYPE CONTROL CIRCUIT FOR ELECTRONIC APPARATUS A sensing type control circuit for an electronic apparatus is provided. An output unit is coupled between an external power source and the electronic apparatus and provides varied power supply to the electronic apparatus according to a control signal. A switch is couple... | 07/01/2010 |
| 20100020574 | Power Adapter and Conversion Method A power adapter and conversion method for converting an alternating voltage to a direct voltage supplied to a load are provided. The power conversion method includes the following steps. The alternating voltage is received and filtered to generate a filter voltage. The ... | 01/28/2010 |
| 20090316450 | POWER SUPPLY DEVICE WITH SYSTEM SWITCH CIRCUIT A power supply device with a system switch circuit includes a primary power system, a stationary power system and a power management unit. The power management unit is triggered by a remote ON/OFF signal to generate a bias voltage power for turning on the primary power ... | 12/24/2009 |
| 20090251932 | Low Harmonic Rectifier Circuit A method, device, and plurality of circuit enhancements for a rectifier system that enable reduction in lower order and higher order harmonics, without substantially reducing the rectifier's direct current output voltage. The rectifier system comprises a phase shifting ... | 10/08/2009 |
| 20090231889 | METHOD AND APPARATUS FOR AC TO DC POWER CONVERSION WITH REDUCED HARMONIC CURRENT A method and apparatus are disclosed for controlling a buck converter. In one aspect, an integrator is coupled to receive a current sense signal representative of a current in a switch of the buck converter and to integrate the current sense signal to produce a first in... | 09/17/2009 |
| 20090231891 | REACTOR ARRANGEMENT FOR ALTERNATING ELECTRICAL CURRENT A reactor arrangement for alternating electrical current includes different coils (105, 107) for positive and negative half-cycles of the alternating electrical current. The negative and positive half-cycles of the alternating electrical current are directed to t... | 09/17/2009 |
| 20090231890 | Boost converter input ripple current reduction circuit A boost inductor value reduction circuit is integrated into a traditional boost power converter to greatly reduce undesirable high frequency harmonics from being fed back to the input side of the boost power converter. The boost inductor value reduction circuit is very ... | 09/17/2009 |
| 20090122580 | THYRISTOR POWER CONTROL CIRCUIT A thyristor power control circuit reduces EMI and maintains a holding current in the thyristor to prevent flickering at a load. The power control circuit includes a thyristor configured to receive an input AC voltage, and responsive to a gate pulse generates a modified ... | 05/14/2009 |
| 20080285315 | POWER SUPPLY APPARATUS AND ELECTRONIC DEVICE HAVING THE POWER SUPPLY APPARATUS A power supply to improve an EMI characteristic and an electronic device having the power supply. The power supply includes a power converter to convert an alternating current (AC) power applied from outside to a direct current (DC) power, a ground portion to supply a g... | 11/20/2008 |
| 20080253153 | Active Power Conditioner An active power conditioner includes a first power electronic switch set, a second power electronic switch set, a third power electronic switch set, an input filter and an output filter. The active power conditioner can supply a stable AC voltage to a load when a voltag... | 10/16/2008 |
| 20080247197 | ONE-WAY DIPOLAR COMPONENT WITH A PROTECTION AGAINST OVERCURRENT A one-way dipolar component with overcurrent protection including, in parallel, a first one-way dipolar component with a positive temperature coefficient; and a second one-way dipolar component having the same biasing as the first one-way dipolar component having a cond... | 10/09/2008 |
| 20080239771 | Asymmetrical Interleaving Strategy for Multi-Channel Power Converters In a power converter having m=two or more channels of power factor correction (PFC) circuits connected in parallel and an electromagnetic interference (EMI) filter connected in series therewith, phase shifts in switching between the respective PFC channels can allow inc... | 10/02/2008 |
| 20080225559 | SWITCHING-MODE POWER SUPPLY A switching-mode power supply is configured so that two power supply lines are connected with each other via a series circuit consisting of a main switching element, a switch, and a transformer. The switching-mode power supply further includes a ripple voltage detecting... | 09/18/2008 |
| 20080084717 | Multi-phase buck converter with a plurality of coupled inductors A multi-phase converter comprising 2N+1 inductors; and 2N+1 switching converters parallel connected and each including a switched node; wherein N is an even integer, a pair of said inductors are coupled and wound about a common core and each said coupled inductor is con... | 04/10/2008 |
| 20080062728 | Control methods for pulse width modulaton (PWM) A method of controlling a power converter is used to interface to a power grid or supply network operating at a frequency (Fnet) that is nominally fixed (say at 50 Hz, for example) but which can be varied as a way of controlling power imbalanced within the network as a ... | 03/13/2008 |
| 20080049464 | Electronic apparatus, AC/DC conversion device and power factor correction circuit thereof An electronic apparatus, AC/DC conversion device and power factor correction circuit are provided. The power factor correction circuit includes an inductance, a switch, a power control chip, a first diode and a first capacitor. The inductance has a first end and a secon... | 02/28/2008 |
| 20080018425 | Transforming device of power source and transformer thereof A transformer includes a magnetic element, a first winding, a second winding and a shield. The first winding is wound outside the magnetic element, the second winding is wound outside the first winding, and the shield is disposed between the first winding and the second... | 01/24/2008 |
| 20080019158 | MULTI-PHASE BUCK CONVERTER WITH A PLURALITY OF COUPLED INDUCTORS A multi-phase converter comprising 2N+1 inductors; and 2N+1 switching converters parallel connected and each including a switched node; wherein N is an even integer, a pair of said inductors are coupled and wound about a common core and each said coupled inductor is con... | 01/24/2008 |
| 20070258273 | POLYPHASE LINE FILTER A polyphase line filter includes a first filter branch between a first filter input and a first filter output, the first filter branch comprising a series connection of at least two inductances wound onto different legs of a multi-leg filter core, and a second filter br... | 11/08/2007 |
| 20070247878 | "Low Loss Propulsion System" This invention relates to low loss power supply system comprising a rectifying bridge 3 supplying current to a motor, wherein the rectifying bridge including two AC power feed inputs PA, PB as well as at least one output for supplying power to said motor M, and w... | 10/25/2007 |
| 20070217236 | APPARATUS AND METHOD FOR SUPPLYING DC POWER SOURCE An apparatus and method for supplying a direct current power source capable of compensating a power factor of an input power source by increasing and decreasing energy required by load changes, the apparatus comprising: an input current detecting unit for detecting an i... | 09/20/2007 |
| 20070189046 | Power conversion apparatus A power conversion apparatus is disclosed. In the case where a coil is arranged in a power module, the circuit system between the ends of the coil in the power module, regardless of where the coil is located, is structurally isolated and insulated from each other. This ... | 08/16/2007 |
| 20070159860 | FILTER EMC filter, for connection between a mains supply network and a mains-operated appliance to reduce conduction noise between said supply network and said appliance, comprising a voltage divider connected to said mains network, for generating a voltage lower than a voltag... | 07/12/2007 |
| 20070070660 | Method and apparatus for estimating line inductance for PWM rectifier control A rectifier includes a switching circuit and a controller. The switching circuit is coupled between positive and negative buses and a plurality of input voltage sources. The switching circuit includes a plurality of pairs of switching devices. Each pair is associated wi... | 03/29/2007 |
| 20070047273 | SWITCHING POWER SUPPLY APPARATUS A switching power supply apparatus comprising: a first transformer, one end of a primary winding thereof being connected to one end of a secondary winding of a converter transformer; a second transformer, one end of a primary winding thereof being connected to another e... | 03/01/2007 |
| 20070030707 | AUXILIARY CIRCUIT FOR USE WITH THREE-PHASE DRIVE WITH CURRENT SOURCE INVERTER POWERING A SINGLE-PHASE LOAD The present invention is directed to an auxiliary circuit for reducing low order current harmonics in a three-phase drive system driving a single-phase load, the three-phase drive system including a three-phase source voltage connected to a rectifier system connected to... | 02/08/2007 |
