Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7944087 | Method and apparatus for stabilizing voltage of intermediate circuit of frequency converter A method and an apparatus for damping voltage oscillation of a voltage intermediate circuit of a frequency converter, the frequency converter comprising a half controlled rectifier bridge coupled to a supply network. The method comprises determining magnitude (U | 05/17/2011 |
| 7337233 | Network system with TCP/IP protocol spoofing A system in which a personal computer sends messages into a TCP/IP network using a conventional dial-up link and downloads data from the TCP/IP network using a high-speed one-way satellite link. A preferred embodiment uses a conventional SLIP provider to connect to ... | 02/26/2008 |
| 7323793 | System and method for driving one or more loads A system and method for driving a load at a desired operating level. A driver is connected to a load. The load can be selected from a plurality of loads by a selection system, such as a multiplexer, or a single load can be utilized. Feedback from the load is provide... | 01/29/2008 |
| 7325063 | Apparatus, method, and system for removing ethernet header and adding second IP header An apparatus including a protocol stack, the protocol stack including an application layer, a network layer, and a physical layer, wherein the physical layer comprises a hardware interface between the apparatus and a network, wherein network-level tunnelling of a pa... | 01/29/2008 |
| 7301313 | Multiple voltage regulators for use with a single load Multiple voltage regulators for use with a single load. The present invention allows power to be supplied to an electrical load using multiple voltage regulators based on the operating environment of the load. In one embodiment, a primary voltage regulator that is b... | 11/27/2007 |
| 7289873 | Sensor system for a cutting machine tool The present invention relates to a sensor system for a cutting machine tool (300) with an energy supply unit (101), which inductively provides energy for the supply of at least one sensor arrangement (110) of the cutting machine tool (300... | 10/30/2007 |
| 7190150 | DC—DC converter for power level tracking power amplifiers A DC-to-DC converter as described herein is suitable for use as a variable voltage supply for an RF power amplifier. The DC-to-DC converter includes a buck converter for providing relatively low voltage and current output, and a linear voltage regulator for providin... | 03/13/2007 |
| 7164255 | Inductive battery charger system with primary transformer windings formed in a multi-layer structure There is provided a planar inductive battery charging system designed to enable electronic devices to be recharged. The system includes a planar charging module having a charging surface on which a device to be recharged is placed. Within the charging module and par... | 01/16/2007 |
| 7154754 | Modular voltage regulator An assembly comprises a voltage regulator module and a field-pluggable voltage converter module configured in an arrangement that interlocks with and optionally attaches to the voltage regulator module. ... | 12/26/2006 |
| 7091630 | Device and method for inhibiting power fluctuation A device for inhibiting power supply voltage fluctuation that is caused by fluctuation of a load current generated by a load circuit. The device includes a current consumption circuit, a data generation circuit, and a D/A converter. The current consumption circuit i... | 08/15/2006 |
| 7057869 | Method for protecting at least one consumer against overvoltage tages and device for carrying out the method A method and a device for protecting at least one consumer against overvoltages when working with a method for non-contact transmission of electric power from one or more medium-frequency current sources, whose frequencies may have deviations around medium frequency... | 06/06/2006 |
| 7047110 | Method and apparatus for controlling a power supply A method for controlling a power supply, the method comprising: forming a front-end to the power supply, the front-end comprising a plurality of digital-to-analog circuits under control of a controller; and programming the controller to control the digital-to-analog... | 05/16/2006 |
| 7009369 | Advanced monitoring algorithm for regulated power systems with single output flag An improved method of monitoring the output power provided by a switch mode power converter that reduces the overall cost of the converter. The method includes initiating a soft-start procedure for a first output voltage in the event the first voltage channel is ena... | 03/07/2006 |
| 6952082 | Microwave excited ultraviolet lamp system with single electrical interconnection A microwave excited ultraviolet lamp system having a single electrical cable that supplies operating voltages from a power supply to a lamp head. The single electrical cable may provide high voltage to a magnetron of the lamp head and a lesser voltage to an internal... | 10/04/2005 |
| 6931512 | Method and apparatus for selectively retrieving information from a source computer using a terrestrial or satellite interface A requesting terminal includes an interface that allows a user to select whether data downloaded from a network (such as the Internet) is transmitted to the requesting terminal via a high-speed link, such as a satellite link, or a lower speed link, such as a terrest... | 08/16/2005 |
| 6828696 | Apparatus and method for powering multiple magnetrons using a single power supply A system and method are provided to power a plurality of magnetrons devices. The system may include a power supply device to power a first magnetron device, a second magnetron device and a third magnetron device. A control device may control (or apportion) an amount... | 12/07/2004 |
| 6812590 | Power supply circuit External output terminal 28 is clamped by clamping circuit 20, and a current mirror is configured using diode circuit 23 within clamping circuit 20 and detector transistor 34. When the voltage of external output terminal 28 ... | 11/02/2004 |
| 6650095 | Low power, dual output AC/DC and DC/DC converter The converter uses the energy stored in the output filter of a step-down (or buck) converter and in the inductor of a step up/down (or buck-boost) converter to supply a second output of opposite sign. In particular, the converter has a first input receivi... | 11/18/2003 |
| 6617965 | Control of the level of the signal produced by a transceiver coupled to a power distribution line A method for controlling the level of a signal produced by a transceiver of digital data coupled to a power distribution line during a transmission phase is provided. The level of the signal output by the transceiver is regulated by comparing the current ... | 09/09/2003 |
| 6603218 | Method, system and device for managing the consumption of electric energy in a domestic environment A method is described, for managing the energy consumption of electric users (LB, LS, FO, PG, CO), including household appliances, in a domestic environment (A), said users being operatively connected in a network (RE), each one of said users (LB, LS, FO,... | 08/05/2003 |
| 6586915 | Method and apparatus for controlling the voltage of signals powering low voltage lighting systems A power control system and method of power control, the system consists of a power transformer having a primary portion and a secondary portion and a wiring run having a length and coupled at one end to the secondary portion. Also included is a constant v... | 07/01/2003 |
| 6583520 | Dual-switching and dual-linear power controller chip The invention provides a new hybrid 4-in-1 power controller chip for a PC mainboard which integrates a synchronous buck switching regulator to supply the CPU core voltage, a standard buck switching regulator for I/O circuits, a linear controller for the G... | 06/24/2003 |
| 6538342 | Power supply with only feedforward in primary and multiple secondaries A multiple output power supply with a constant volt-second clamp circuit is provided. The multiple output power supply includes a transformer having a primary winding electrically connected to a supply voltage and at least two secondary windings for provi... | 03/25/2003 |
| 6509656 | Dual magnetrons powered by a single power supply A system and method are provided to power two magnetrons devices. The system may include a power supply device to power a first magnetron device and a second magnetron device. A control device may control an amount of current reaching at least the first m... | 01/21/2003 |
| 6462432 | Method and device for inductive transmission of electric power to a plurality of mobile consumers What follows is a description of a method and device for the inductive transmission of electric power from a medium-frequency source with a frequency of (fM) to one or more mobile consumers which are inductively coupled to the transmission line... | 10/08/2002 |
| 6426611 | Constant voltage lamp controller A power control system and method of power control, the system consists of a power transformer having a primary portion and a secondary portion and a wiring run having a length and coupled at one end to the secondary portion. Also included is a constant v... | 07/30/2002 |
| 6396169 | Intelligent power supply control for electronic systems requiring multiple voltages A system and method for developing a cost efficient electronic power supply system that handles a range of supported electronic circuits is provided. The electronic power supply system adaptively configures the power applied to electronic circuits. Thereb... | 05/28/2002 |
| 6265789 | Electronic apparatus In at least two separated devices, a data transmission or a power transmission is performed through the electromagnetic coupling of coils which are arranged in mutually facing positions in the respective devices. In order to reduce the effect of a displac... | 07/24/2001 |
| 6239509 | Method and apparatus for voltage regulation in multi-output switched mode power supplies A step-down switched-mode power supply circuit includes a transformer having at least one primary winding and at least one secondary winding, a current sensing device for sensing a current through a primary winding of the transformer, a first switch and a... | 05/29/2001 |
| 6057607 | Method and apparatus for voltage regulation in multi-output switched mode power supplies A step-down switched-mode power supply circuit includes a transformer having at least one primary winding and at least one secondary winding, a current sensing device for sensing a current through a primary winding of the transformer, a first switch and a... | 05/02/2000 |
| 5684679 | Switching mode power supply capable of reducing the response time thereof A novel switching mode power supply (SMPS), which is capable of substantially reducing the response time of the SMPS for generating a plurality of regulated DC output voltages from an AC input power, comprises a first rectifier for rectifying the AC input... | 11/04/1997 |
| 5543666 | Method of reducing the peak load of energy supply network systems and apparatus for limiting the power consumption of a consumer unit fed from an energy supply connection A method of reducing the peak load of energy supply network systems to which a number of consumer units, each of which has several consumers, are connected. The power consumption of the consumer units can be limited to a predetermined limiting value. At l... | 08/06/1996 |
| 5202618 | Power supply system for electric circuits different in operating voltage An electric power supply system distributes power voltage levels to electric circuits different in operating voltage from one another, and comprises a plurality of step-down units each coupling two of the electric circuits, wherein each of the plurality o... | 04/13/1993 |
| 5128602 | Parallel supply for multiple loads from a single power supply A single constant voltage power supply concurrently supplies a plurality of independent loads each with an independently selectable constant current load without interaction between the loads (currents) by employing a plurality of parallel connected circu... | 07/07/1992 |
| 4868410 | System of load flow calculation for electric power system In the load flow calculating method of the present invention, a Jacobian matrix for reactive power with respect to voltage is made to coincide with a part of a Jacobian matrix for effective power with respect to phase by introducing variables of the quoti... | 09/19/1989 |
| 4833338 | Ferroresonant regulator for inductively coupled power distribution system A ferroresonant regulator for use in an inductively coupled high frequency power distribution system. A constant current resonant power source, comprising a sine wave oscillator (12), an amplitude controlled amplifier (16), a power amplifier (20), and an ... | 05/23/1989 |
| 4804916 | Input voltage compensated, microprocessor controlled, power regulator A regulating A.C. power controller regulates the selected levels of power to be applied to a plurality of loads by producing a digital signal directly from the A.C. voltage with a pulse duration representative of load power which can be applied as an inpu... | 02/14/1989 |
| 4724363 | Current control circuit for high voltage applications A current control circuit for high voltage applications includes series-connected high and low voltage sources through which the current to be regulated flows. The low voltage source is a capacitor which is periodically recharged through a flyback transfo... | 02/09/1988 |
| 4611126 | Power on/off reset generator A power on-off reset generator for monitoring a power supply for a logic system powered from the monitored power supply. A precision-voltage sensor produces a control signal for a time delay circuit when the power supply rises above a preselected value. A... | 09/09/1986 |
| 4538073 | Modular power supply system A power distribution system intended for use in a highly modular desk top computer system is disclosed. The invention provides a programmable modular DC power supply including a power module that produces a first fixed regulated DC voltage which is couple... | 08/27/1985 |
