Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 7843672 | Input/Output regulating circuitry with self-electrostatic-discharge protection An I/O regulating circuitry is provided. The I/O regulating circuitry omits the ESD device in a CMOS process with a minimized critical dimension to reduce chip size while still maintaining electrostatic discharge immunity. The I/O regulating circuitry is applied in ... | 11/30/2010 |
| 7688030 | Charger unit for an electronic device including a system for protective storage of an adapter plug A charger unit for an electronic device that includes a housing, a plurality of charging contacts provided on the housing, and a recess provided in the housing, preferably on a rear face thereof. A plug having a plurality of prongs may be selectively attached to and... | 03/30/2010 |
| 7679320 | Amusement apparatus operative as a dynamo battery charger The present invention provides a dynamo battery charger adapted to provide amusement during the recharging process. The charger housing is shaped or constructed to represent an amusing apparatus that includes optional features that simulate actual components whereby... | 03/16/2010 |
| 7663517 | Accurate hardware Power OK (POK) generation methodology for processors with varying core voltage requirements A method for configuring a circuit for providing a power OK (POK) signal is described. The method includes identifying a voltage range and voltage interval, dividing the voltage range into a plurality of segments, selecting a reference voltage for each segment, and ... | 02/16/2010 |
| 7649753 | Power supply for electrostatic precipitator An exemplary embodiment of the disclosure pertains to a high-voltage AC-DC converter converting alternating input current into high-voltage direct current to be provided to a load, e.g. for use of powering an electrostatic precipitator. The converter includes at lea... | 01/19/2010 |
| 7649325 | Methods and apparatus for switching regulator control A circuit includes a capacitive element for coupling across a load element to be energized by a DC signal, a first sense element to monitor an instantaneous sum of currents through the load element and the capacitive element, a switching element to control current t... | 01/19/2010 |
| 7646185 | Automatic external switch detection in synchronous switching regulator controller A synchronous switching regulator controller incorporates a switch detection circuit to determine the presence or absence of a power switch at the output of a switch driver so that the switch driver can be disabled when it is left unused. In one embodiment, the sync... | 01/12/2010 |
| 7643321 | Bi-directional current sensing circuit A current sensing circuit that determines an output current of a bi-directional converter circuit comprises a current transformer that receives a first current signal and that outputs a second current signal. The first current signal is indicative of the output curr... | 01/05/2010 |
| 7633269 | Charging method and system thereof A charging method for charging a battery module. The battery module receives a different charge voltage according to the voltage or current status of the battery module. The charge voltage is decreased to increase battery power when any battery voltage level is grea... | 12/15/2009 |
| 7626367 | Voltage reference circuit with fast enable and disable capabilities An integrated circuit for providing an output voltage substantially equal to a reference voltage includes: a low drop-out (LDO) regulator coupled to the reference voltage for producing the output voltage at an output terminal; a fast turn-on circuit coupled to the L... | 12/01/2009 |
| RE40915 | Programmable current-sensing circuit providing continuous temperature compensation for DC-DC converter A current-sensing and correction circuit having programmable temperature compensation circuitry that is incorporated into a pulse width modulation controller of a buck mode DC—DC converter. The front end of the controller contains a sense amplifier, having an inpu... | 09/15/2009 |
| 7564222 | Method for fast-charging a battery and device for carrying out said method The present invention refers to a method for fast-charging a secondary battery and to a device for carrying out said method. Fast charging is achieved by converting a DC supply voltage into a pulsating voltage which is transmitted to the secondary battery to be char... | 07/21/2009 |
| 7492125 | Power tools, battery chargers and batteries A battery pack for powering a cordless power tool. The battery pack includes at least one battery cell operable to supply a discharge current, a switch operable to control the discharge current and a protection device to protect the switch. The protection device is ... | 02/17/2009 |
| 7456625 | Electric circuit As for a transistor, overlapped are factors such as a variation of a gate insulation film which occurs due to a difference of a manufacturing process and a substrate used and a variation of a crystalline state in a channel forming region and thereby, there occurs a ... | 11/25/2008 |
| 7457138 | Single pin multi-function signal detection method and structure therefor In one embodiment, a multi-function signal sensor is configured to receive a signal having a plurality of states and to offset the input signal by a first amount for values of the input signal that are greater than a first value. ... | 11/25/2008 |
| 7453711 | Step-up power supply unit and portable apparatus utilizing the same A step-up power supply unit for providing a multiplicity of different step-up voltages as needed, generated by stepping up a voltage of a single power source such as a battery. The step-up voltage of the last stage charge pump unit and the step-up voltage of at leas... | 11/18/2008 |
| 7447049 | Single ended flyback power supply controllers with integrator to integrate the difference between feedback signal a reference signal This invention relates to SMPS controllers employing primary side sensing to detect a point of zero magnetic flux, at which the output voltage of the SMPS may be sampled accurately on the primary side. We describe a switch mode power supply (SMPS) controller for reg... | 11/04/2008 |
| 7443698 | Converter circuit for switching of a multiplicity of switching voltage levels A converter circuit is disclosed for switching of a multiplicity of switching voltage levels, which have n first switching groups for each phase (R, S, T), with the n-th first switching group being formed by a first drivable bidirectional power semiconductor switch ... | 10/28/2008 |
| 7439709 | Charger unit for an electronic device including a system for protective storage of an adapter plug A charger unit for an electronic device that includes a housing, a plurality of charging contacts provided on the housing, and a recess provided in the housing, preferably on a rear face thereof. A plug having a plurality of prongs may be selectively attached to and... | 10/21/2008 |
| 7433210 | Switched-mode power supply comprising an adjustable oscillator The switched-mode power supply has a transformer which contains a primary winding and at least one secondary winding, a switching transistor in series with the primary winding, a driver stage for controlling the switching transistor, and a control circuit for contro... | 10/07/2008 |
| 7433207 | Bi-directional isolated DC/DC converter A bi-directional converter for converting voltage bi-directionally between a high voltage bus and a low voltage bus, having a switching converter connected across the high voltage bus, the switching converter having first and second switching modules connected in se... | 10/07/2008 |
| 7430132 | Medium voltage inverter system A medium or high voltage multi-inverter system is described, in which multiple inverter cells are included in a phase line to increase the voltage level supported by the system, and support higher voltage loads such as AC three-phase motors. In one configuration, fi... | 09/30/2008 |
| 7423891 | Inverter device utilizing three switches controlled in a concurrent manner in a resonant transformer Described is an inverter device suitable for driving a cold cathode fluorescent lamp (CCFL), comprising a transformer having a primary winding and a secondary winding. The primary winding has two terminals connected to a return-path terminal of a direct current (DC)... | 09/09/2008 |
| 7423408 | Monitoring device and method for determining at least one characteristic variable for the state of a battery A method for determining at least one characteristic variable for the state of a battery includes: (a) determining the charge throughput of the battery per time step; having, (b) determining a first characteristic figure in order to describe the stratification of th... | 09/09/2008 |
| 7417408 | Method and arrangement for charging capacitors of direct-voltage intermediate circuit of frequency converter A method and an arrangement for charging capacitors of a direct-voltage intermediate circuit of a frequency converter. The arrangement comprises a charging circuit (CCA) comprising a first diode (D1) and a second diode (D2) connected in series with the... | 08/26/2008 |
| 7413827 | Car power source apparatus A car power source apparatus is provided with a driving battery which drives an electric motor, heaters which heat the driving battery, a control circuit which controls power to the heaters, a temperature sensor which detects battery temperature and issues a detecte... | 08/19/2008 |
| 7414866 | Method for smoothing input current to a power delivery system having regeneration capability A method for smoothing input current to a power delivery system having regeneration capability. The method comprises evaluating input current to an input converter of the power delivery system for a first fundamental cycle, and shifting a window relative to a wavefo... | 08/19/2008 |
| 7411797 | Converter including a control device for turning on an auxiliary valve with a time delay and a method for controlling such a converter The invention relates to a converter provided with a resonant circuit (16), which comprises a control device (24) adapted, in connection with a commutation of the phase current (iph) from a semiconductor element of turn-off type of a first c... | 08/12/2008 |
| 7411373 | Charging/discharging apparatus and method, power supplying apparatus and method, power supplying system and method, program storing medium, and program In the present invention, a battery pack type discriminating or deciding concave portion (131) is formed at a position corresponding to a battery pack type deciding switch (214) of an SQ battery pack (1) and when the SQ battery pack (1) i... | 08/12/2008 |
| 7408328 | Information handling system including a power supply unit with a switching regulator that reduces transient load release An information handling system (“IHS”) includes a system board and a power supply unit coupled to the system board. The power supply unit includes a switching power regulator. The switching power regulator includes an inductor coupled to an output, a capacitor c... | 08/05/2008 |
| 7405539 | Battery charger for preventing charging currents from overshooting during mode transition and method thereof The present invention provides a battery charger and a method for preventing an overshoot charging current during a mode transition. The battery charger includes a charging regulation circuit for outputting a charging current whose amount is regulated based on a reg... | 07/29/2008 |
| 7405954 | Method and apparatus for conditional response to a fault condition in a switching power supply Techniques are disclosed to regulate an output of a power converter. One example power converter controller circuit includes a line sense input to be coupled to receive a signal representative of an input voltage of a power converter. A feedback input is included an... | 07/29/2008 |
| 7405953 | Driving circuit for power switching device A driving circuit has a p-channel transistor and an n-channel transistor. A power switching element is set at an on state each time the p-channel transistor sets a charging line at a conductive state in response to a leading edge of an output pulse to supply a posit... | 07/29/2008 |
| 7397680 | Method and apparatus for balancing active capacitor leakage current A circuit that provides a method and apparatus to actively balance capacitor leakage current from series stacked capacitors and disconnects itself when stacked capacitors are configured for doubler operation. In one embodiment, the active circuit includes high volta... | 07/08/2008 |
| 7397230 | Integrated FET synchronous multiphase buck converter with innovative oscillator A power conversion system, preferably a buck converter, having (i) an oscillator, (ii) a pulse width modulator, (iii) and a nonoverlap clock generator and level shifter, wherein the improvement comprises the elimination of an external resistor divider is described. ... | 07/08/2008 |
| 7394221 | Mechanically isolated battery charging apparatus A battery drawer for a cordless telephone or other apparatus that operates from both regular AC power and battery power and that has a stand-by battery recharging system and associated battery charging circuit. The battery drawer is slidably mounted in a body and is... | 07/01/2008 |
| 7394224 | Charge control device A charge control device of a secondary battery that allows the use of an electronic apparatus for a long period using a single initial charging, and is capable of extending battery life. The charging device includes a charge circuit for supplying charging current to... | 07/01/2008 |
| 7394225 | Pseudo constant current multiple cell battery charger configured with a parallel topology A multiple cell battery charger configured in a parallel topology provides constant current charging. The multiple cell battery charger requires fewer active components than known serial battery chargers, while at the same time preventing a thermal runaway condition... | 07/01/2008 |
| 7394671 | Controller IC, DC-AC conversion apparatus, and parallel running system of DC-AC conversion apparatuses A DC power source voltage is supplied to a center tap of a primary winding, and first and second semiconductor switches alternately turned on are disposed between each of both ends of the primary winding and a common potential point, and a current flowing through a ... | 07/01/2008 |
| 7394668 | Switching power supply circuit and frequency converter An object of the present invention is to lower the voltage applied to the starting resistor of the starting circuit in a switching power supply circuit to reduce the power loss especially when the receiving voltage is high and thereby provide a small and inexpensive... | 07/01/2008 |
