Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 8106637 | Programmable floating gate reference A system includes a controllable voltage generator to generate a power supply voltage. The system also includes a system controller to determine a voltage level associated with the power supply voltage, and prompt the controllable voltage generator to generate the p... | 01/31/2012 |
| 8054052 | Constant voltage circuit A constant voltage circuit converts a voltage input to an input terminal and outputs a predetermined constant voltage from an output terminal. The constant voltage circuit includes an output transistor that outputs an electrical current corresponding to a control si... | 11/08/2011 |
| 7834600 | Regulated power supply system and an operating method therefore A power supply system includes a regulator for receiving an input voltage and producing an output voltage, the regulator including an output device and a controller coupled to the regulator. The controller is configured to monitor at least one operating parameter of... | 11/16/2010 |
| 7755335 | Feed controller A feed controller adopted to be included in a battery drive type device, the feed controller adopted to supply power to a predetermined load from a battery holder that obtains rated electromotive force from plural rated number of batteries having predetermined speci... | 07/13/2010 |
| 7688045 | DC power conversion circuit with constant current output A DC power conversion circuit with constant current output includes a DC voltage source, a driving circuit and a control signal generator. The DC voltage source is used for providing DC power. The driving circuit includes a switch, a resistor, a diode, and an induct... | 03/30/2010 |
| 7652454 | Electronic equipment having a boost DC-DC converter Provided is an electronic equipment including: a boost DC-DC converter and an electric power storage device, in which the electric power storage device is charged with a electric power outputted the DC-DC converter with efficiency, and in which stored electric power... | 01/26/2010 |
| 7548042 | DC-DC converter device and method for operating the dc-dc converter of a motor vehicle on-board electrical system A DC-DC converter system having a DC-DC converter including a power transistor and a control unit is provided, which control unit provides control signals for triggering the power transistor. The DC-DC converter is operable in two operating modes: in a first operati... | 06/16/2009 |
| 7511462 | DC power conversion circuit having self-auxiliary power and self-protection A DC power conversion circuit having self-auxiliary power and self-protection against a short or open load circuit includes a DC voltage source, a driving circuit, and an auxiliary circuit. The DC voltage source is used for providing a DC power. The driving circuit ... | 03/31/2009 |
| 7408795 | Energy storage and hold-up method and apparatus for high density power conversion A method and apparatus for adaptively configuring an array of voltage transformation modules is disclosed. The aggregate voltage transformation ratio of the adaptive array is adjusted to digitally regulate the output voltage for a wide range of input voltages. An in... | 08/05/2008 |
| 7368980 | Producing reference voltages using transistors An exemplary circuit embodiment includes a depletion-mode transistor and an enhancement-mode transistor. The circuit also includes a circuit portion coupled to a gate region of the depletion-mode transistor and to a gate region of the enhancement-mode transistor. In... | 05/06/2008 |
| 7353469 | Method and program for designing semiconductor device It is an object of the present invention to provide a semiconductor device design method and program that can rapidly improve power supply noise characteristics and reduce the noise sufficiently without being restricted in design and noise solution. A step of perfor... | 04/01/2008 |
| 7342440 | Current regulator having a transistor and a measuring resistor The invention relates to a current regulator having the following features: a first semiconductor body (1; 1′) having a first and second terminal contact (11, 12), a transistor (T) having a control ... | 03/11/2008 |
| 7333373 | Charge pump for use in a semiconductor memory In an embodiment, an improved charge pump circuit is provided to control a threshold voltage increase of a charge transmission transistor during a charge transfer period, and to prevent a latch-up generation during a charge non-transfer period. A charge transmission... | 02/19/2008 |
| 7321254 | On-chip automatic process variation, supply voltage variation, and temperature deviation (PVT) compensation method An on-chip substrate voltage controller which includes a plurality of chains of interconnected loaded ring oscillators connected to a multiplexer, where the multiplexer is configured to average the outputs from all the chains of interconnected loaded ring oscillator... | 01/22/2008 |
| 7319310 | Regulated power supply unit An improved power supply unit includes a DC power source having a positive terminal and a negative terminal, and a voltage regulating circuit that includes a plurality of elements coupled in series between the positive and negative terminals of the DC power source t... | 01/15/2008 |
| 7317455 | Bias voltage offset circuit A bias offset voltage circuit for controlling one or more devices is disclosed. The bias offset voltage circuit includes a three voltage sources connected in series and a switching element. Each voltage source includes a positive terminal and a negative terminal. Th... | 01/08/2008 |
| 7314039 | Method of controlling operation of a liquid-fuel combustion appliance A method of controlling operation of a liquid-fuel combustion appliance. The method is characterized by including an “antiseize operating mode” in which an electric motor and a fuel pump, powered by the electric motor, are started periodically to prevent oxidati... | 01/01/2008 |
| 7312972 | Actuator driving apparatus An actuator driving circuit for driving an electromagnetic actuator, includes a boosting circuit which boosts a source voltage, and a boosted voltage controller which is connected to an output terminal of the boosting circuit, i.e., the downstream of the boosting ci... | 12/25/2007 |
| 7281113 | Microcomputer with built-in electrically rewritable nonvolatile memory A microcomputer comprises a CPU; a nonvolatile memory; a plurality of volatile memories; a system bus; a program transfer bus; a program transfer section; an address conversion section; and a voltage detection section. The volatile memories include a plurality of me... | 10/09/2007 |
| 7271600 | Semiconductor switch circuit First, second, and third semiconductor switches are connected in series between input and output terminals and first and second voltage application circuits are connected in parallel to first and third semiconductor switches, whereby providing a semiconductor switch... | 09/18/2007 |
| 7271550 | Dimmer circuit arrangement A dimmer circuit arrangement is disclosed including a second control circuit (40) for controlling the operation of a triac (50) for delivering current to a load (60), and a first control circuit (10) for controlling the operation of an IG... | 09/18/2007 |
| 7268314 | Discharge-processing power source device A power supply device for electric discharge machining includes a switching circuit that supplies a discharge pulse current to an inter-electrode portion that is a portion between an electrode and a workpiece serving as another electrode arranged to be opposed to th... | 09/11/2007 |
| 7262559 | LEDS driver The power supply (20) for LEDs provides power to a LED light source (10) having a variable number of LEDs wired in series and/or in parallel. The power supply (20) uses current and voltage feedback to adjust power to the LEDs and provides protec... | 08/28/2007 |
| 7256554 | LED power control methods and apparatus Methods and apparatus for providing and controlling power to loads including one or more LEDs. In one example, a controlled predetermined power is provided to a load without requiring any feedback information from the load (i.e., without monitoring a load voltage an... | 08/14/2007 |
| 7239494 | System and method to mitigate voltage fluctuations A system and method can mitigate voltage fluctuations. According to one embodiment, a delay system provides a delayed version of a first reference signal as a function of a supply voltage. A comparator provides a control signal for controlling a protection device ba... | 07/03/2007 |
| 7205805 | Adjusting power consumption of digital circuitry relative to critical path circuit having the largest propagation delay error A method and apparatus is disclosed for adjusting at least one of a supply voltage and a clocking frequency applied to digital circuitry of a computing device, wherein the digital circuitry comprises a plurality of critical path circuits and a corresponding pluralit... | 04/17/2007 |
| 7202645 | Regulated power supply unit An improved power supply unit includes a DC power source having a positive terminal and a negative terminal, and a voltage regulating circuit that includes a plurality of elements coupled in series between the positive and negative terminals of the DC power source t... | 04/10/2007 |
| 7176699 | Auto-adjustment of RC cells within a circuit An integrated circuit having a first couple of components R and C, at least a second couple of components R1–R3 and C′1–C′2 and a calibration circuit. The couple of componets form an RC cell of which one component ... | 02/13/2007 |
| 7129600 | Control circuit with multiple power sources The present invention provides a control circuit with multiple power sources, which accepts an output signal from a comparator circuit. This control circuit with multiple power sources contains two components: one is a voltage transferring circuit, which connects to... | 10/31/2006 |
| 7120061 | Method and apparatus for a dual power supply to embedded non-volatile memory A charge pump is configured to receive an external voltage level and generate a high voltage level, wherein the high voltage level is higher than the external voltage level. A memory control circuit is configured to receive the external voltage level and the high vo... | 10/10/2006 |
| 7109690 | Fast-disabled voltage regulator circuit with low-noise feedback loop and operating method thereof A low-noise voltage regulator circuit with quick disablement is disclosed. The voltage regulator circuit includes an amplifier for outputting a driving voltage according to a reference voltage, a feedback voltage on a feedback node, and an enable signal; an output t... | 09/19/2006 |
| 7068000 | Torque control device for electrical tools A torque control device for an electrical tool has a switching circuit, a voltage detecting circuit, a torque detecting circuit and a processor. The switching circuit connects between a motor of the electrical tool and a DC voltage source. The voltage detecting circ... | 06/27/2006 |
| 7043379 | Method for quantifying I/O chip/package resonance A method for quantifying effects of resonance in an integrated circuit's power distribution network is provided. The power distribution network includes a first power supply line and a second power supply line to provide power to the integrated circuit. Test ranges ... | 05/09/2006 |
| 6982888 | Unregulated electrical converter An AC-DC voltage converter includes input terminals with a series circuit connected between the input terminals. The series circuit includes a switching element and a capacitor. The discharge of the capacitor supplies the output voltage of the converter. A control c... | 01/03/2006 |
| 6978386 | Method and apparatus for regulating current for programmable logic controllers A method for reducing thermal dissipation in a single PLC package includes implementing a pulse width modulated current regulator including a field effect transistor (FET) switch, and utilizing a turn on delay of the FET to provide a wide operating range of current.... | 12/20/2005 |
| 6937971 | System and method for determining the desired decoupling components for a power distribution system having a voltage regulator module A system and method for determining the desired decoupling components for a power distribution system having a voltage regulator module. The system may employ a mathematical model of a voltage regulator circuit, such as a switching voltage regulator. The mathematica... | 08/30/2005 |
| 6933707 | FET current regulation of LEDs Field Effect Transistors (FETs) are used to regulate current in a light emitting diode (LED). FETs are fundamentally voltage driven devices, where output current is governed by junction voltage. Since junction voltage can be controlled with little or no support circ... | 08/23/2005 |
| 6911827 | System and method of measuring low impedances A method comprises generating first and second current levels and measuring the first and second current levels. The method further comprises alternately generating the first and second current levels repeatedly to generate a periodic current waveform, and measuring... | 06/28/2005 |
| 6861830 | Method of improving transient noise of a switching DC-to-DC converter with multiple output voltages A first oscillating signal presenting a peak, a valley, a rising portion gradually increasing from the valley to the peak, and a falling portion gradually decreasing from the peak to the valley is generated. A second oscillating signal presenting an instantly transi... | 03/01/2005 |
| 6778416 | Unregulated voltage converter with independent switching An AC-DC voltage converter includes input terminals with a series circuit connected between the input terminals. The series circuit includes a switching element and a capacitor. The discharge of the capacitor supplies the output voltage of the converter. A control c... | 08/17/2004 |
