Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7330018 | Step-down controller circuit A step-down controller has an input having a first and a second input terminal for applying an input voltage, an output having a first and a second output terminal at which an output voltage can be provided, a series circuit including a switch and an inductance whic... | 02/12/2008 |
| 7330390 | Noise resistant small signal sensing circuit for a memory device Apparatus and method for data sensing circuitry that uses averaging to sense small differences in signal levels representing data states. The apparatus periodically switches the coupling of input terminals and output terminals of an integrator circuit from a first c... | 02/12/2008 |
| 7330019 | Adjusting on-time for a discontinuous switching voltage regulator A discontinuous switching voltage regulator is disclosed including a charging element operable to generate an output voltage, switching circuitry coupled to the charging element, and switch control circuitry to configure the charging element during a cycle, includin... | 02/12/2008 |
| 7330017 | Driver for a power converter and a method of driving a switch thereof A driver for a power converter, method of driving a switch thereof, and a power converter employing the same. In one embodiment, the driver includes switching circuitry referenced to a voltage level and configured to provide a drive signal for a switch referenced to... | 02/12/2008 |
| 7327129 | Current sense circuit and method for a DC-to-DC converter In a DC-to-DC converter, a current sense circuit and method generate a first current by a first transconductive amplifier responsive to the output current of the converter for a controller to switch a high side switch and a low side switch, a second current from a f... | 02/05/2008 |
| 7327126 | Diode circuit A diode circuit includes a differential circuit having a first MOS transistor whose source is connected to a first input terminal, a second MOS transistor whose source is connected to a second input terminal and gate and drain are connected to a gate of the first MO... | 02/05/2008 |
| 7325781 | Automatic bathroom flushers with modular design A bathroom flusher includes a flusher body, a valve assembly, an electronic control system, and a flusher cover. The flusher body includes an inlet and an outlet, and is designed to accommodate the valve assembly that controls water flow between the inlet and the ou... | 02/05/2008 |
| 7327130 | Current sense method A current-sense circuit for measuring a load current in a switching power regulator may operate independently of process variation and temperature, and measure bi-directional load currents without requiring high-speed, high-voltage amplifiers for operation. A positi... | 02/05/2008 |
| 7327128 | Switching power supply transient suppression A number of output phases of a switching power supply are controlled, to regulate its output. An under-voltage condition is responded to, by overriding the control of the output phases, forcing some or all of the phases on, depending on a detected magnitude of a cha... | 02/05/2008 |
| 7327149 | Bi-directional MOS current sense circuit A current sensing circuit comprises a power device adapted to conduct a bidirectional current between first and second terminals thereof, first and second sensing devices operatively coupled to the power device, a sense amplifier providing first and second voltages ... | 02/05/2008 |
| 7327743 | Structure cabling system This invention discloses a local area network including a hub, a plurality of nodes, communication cabling connecting the plurality of nodes to the hub for providing data communication, and a power supply distributor operative to provide at least some operating powe... | 02/05/2008 |
| 7327124 | Control apparatus and method for a boost-inverting converter A plurality of switches, an inductor and two capacitors are configured to be a boost-inverting converter. To operate the converter in a boost-inverting mode, a control apparatus and method switch the switches such that the inductor is energized in a first phase, the... | 02/05/2008 |
| 7324772 | Point-of-load design for high voltage AC power supplies An electrophotographic document production device having a transformerless high voltage power supply located distal to its load and a transformer at the point of load. ... | 01/29/2008 |
| 7323850 | Current detection circuit and switching power supply using the same A current detection circuit of the present invention has a switching device 1; an auxiliary switching device 2; an offset voltage source comprising an offset resistor device 7 and a current source circuit 8; a compensation circuit, compri... | 01/29/2008 |
| 7323855 | Digital pulse width modulated power supply with variable LSB A DC-DC digital pulse width modulated power supply is disclosed for generating a DC regulated output voltage. A digital control node has a digital control voltage disposed thereon for controlling the operation of the supply, wherein the digital control voltage has a... | 01/29/2008 |
| 7323849 | Rechargeable portable light with multiple charging systems A rechargeable portable light having a housing member with an opening for the emission of light, and two possible charging systems including an AC charger, and an auto or boat charger. An electronic circuit is located within the housing member and includes at least ... | 01/29/2008 |
| 7324355 | Dc-DC converter A DC-DC converter is provided which includes a switching element, a choke coil, a flywheel diode, an output capacitor, a diode, and an auxiliary transformer having primary and secondary windings. The primary winding and the switching element constitute a first serie... | 01/29/2008 |
| 7323828 | LED current bias control using a step down regulator A step down switching regulator circuit that is particularly well-suited to drive high power LEDs includes a crossover conduction mode (XCM) control circuit that maintains operation at the crossover point between continuous conduction mode (CCM) and discontinuous co... | 01/29/2008 |
| 7320482 | Semiconductor integrated circuit device The invention intends to provide a technique that achieves a sufficient phase margin with ease. The circuit includes a power supply circuit that is formed with a phase compensating resistor and a phase compensating capacitor, between a second input terminal of a dif... | 01/22/2008 |
| 7321203 | LED dimming control technique for increasing the maximum PWM dimming ratio and avoiding LED flicker Circuitry and methodology for providing LED dimming control in a LED driving system having a switching regulator for providing power supply to drive the LED. The switching regulator includes a switching circuit to which an oscillation signal is applied to control sw... | 01/22/2008 |
| 7321523 | System for monitoring processing device utilization in a computer A monitoring system capable of monitoring utilization of a processing device in a computer. The monitoring system includes a power supply voltage for supplying a core voltage to the processing device, and a comparator for comparing a voltage proportional to the core... | 01/22/2008 |
| 7321223 | Switching power supply apparatus In a switching power supply apparatus, the change in the voltage VOUT at the OUT terminal is transmitted to a V-I conversion circuit via an error amplification circuit and to an I-V conversion circuit, whereby the output voltage signal VL of the I-V conversion circu... | 01/22/2008 |
| 7321834 | Method for calculating power flow solution of a power transmission network that includes interline power flow controller (IPFC) Power flow models of Interline Power Flow Controllers (IPFC) for large-scale power systems are studied, in details. Mathematical models of the IPFC, using the d-q axis decompositions of control parameters are derived. In this framework, for each IPFC, only two contr... | 01/22/2008 |
| 7321224 | DC-DC converter with clamping capacitor and output winding for reduced output voltage ripple A DC-DC converter is structured such that a main switching element has one terminal connected to one terminal of a DC power supply and has the other terminal connected to one terminal of a first winding of a resonance coil, a choke coil has one terminal connected to... | 01/22/2008 |
| 7321266 | Current-matching variable gain amplifier A current-matching variable gain amplifier is provided. The amplifier comprises a reference current source, at least one cascode amplifier, a matching circuit, a control circuit, and at least one first blocking circuit. The reference current source provides a refere... | 01/22/2008 |
| 7319360 | Modulator The present invention describes a modulator including a differential amplifier connected to a reference voltage and a first transistor, and the first transistor is connected to a feedback device, and a second transistor is set between the first transistor and the di... | 01/15/2008 |
| 7319616 | Negatively biasing deselected memory cells In one embodiment, the present invention includes a method to supply a negative voltage to at least one deselected wordline of a memory array. Further, while the negative voltage is supplied to deselected wordlines, a positive voltage may be supplied to a selected w... | 01/15/2008 |
| 7319311 | Step down switching regulator with the substrate of the switching transistor selectively connected to either its drain or source A switching regulator is disclosed that is able to prevent reverse direction current flow without using a dedicated diode even when a PMOS transistor is used as a switching transistor of a step-down switching regulator. A selection circuit is provided to control con... | 01/15/2008 |
| 7319300 | Method of operating an electronically commutated motor, and method for carrying out such a method In this method, the value of a temperature-dependent motor parameter (ke) of an electronically commutated motor (124) is determined during motor operation without a temperature sensor. The motor has a stator (201) having stator phases (20... | 01/15/2008 |
| 7319313 | Photovoltaic DC-to-AC power converter and control method An apparatus and method of control for converting DC (direct current) power from a solar photovoltaic source to AC (alternating current) power. A novel DC-to-AC power converter topology and a novel control method are disclosed. This combination of topology and contr... | 01/15/2008 |
| 7319314 | Replica regulator with continuous output correction Circuits for regulating a voltage or current to a load(s). In one example, a circuit may include a first amplifier providing an amplifier output signal, the first amplifier having at least a first input and a second input, the first input receiving a voltage referen... | 01/15/2008 |
| 7319269 | Semiconductor device power interconnect striping A method and an apparatus for improving the delivery and filtering of power to a semiconductor device is disclosed by organizing out interconnects (pins, balls, pads or other interconnects) used to carry power in a striped configuration that shortens the conductive ... | 01/15/2008 |
| 7317441 | Constant current circuit, drive circuit and image display device A first amplifier circuit (132) included in a voltage generating circuit (114) includes a differential circuit formed of P-type TFT elements (P101, P102) and N-type TFT elements (N101, N102), a constant current circuit (1... | 01/08/2008 |
| 7317305 | Method and apparatus for multi-phase DC-DC converters using coupled inductors in discontinuous conduction mode A multi-phase, coupled-inductor, DC-DC voltage converter operates in discontinuous conduction mode (DCM) when the system is operated at low output power demand. An embodiment of the converter switches to operating in continuous conduction mode (CCM) when the system ... | 01/08/2008 |
| 7317302 | Converter with feedback voltage referenced to output voltage A driver for a white LED string or a display is provided. The driver includes a boost converter that is arranged to provide an output voltage from a source voltage. Also, the driver includes a sense resistor that is coupled between the output voltage and a feedback ... | 01/08/2008 |
| 7317286 | Power supply apparatus for discharge lamp and control method for the same An apparatus supplies power to at least one discharge lamp. The apparatus includes a buck converter for regulating power supplied to at least one discharge lamp having a switching element driven by PWM pulses, and a control unit for supplying PWM pulses to the buck ... | 01/08/2008 |
| 7315150 | Method of power conversion and apparatus which achieves high power factor correction using ripple current mode control A ripple current mode power converter comprised of a magnetic energy storage element, and a method of determining magnetic storage element charge duration based on periodic magnetic storage element current samples. In the preferred embodiment a controller processes ... | 01/01/2008 |
| 7315160 | Non linear controlled power supply with a linear soft start operation A system for controlling a soft start for a switching converter includes a digital feedback control system for receiving an analog voltage signal representing the output of a switching converter, for digitally processing the analog voltage signal by comparing it to ... | 01/01/2008 |
| 7315153 | Switching power supply in an integrated circuit having a comparator with two threshold values, a synchronization input and output, voltage feedback and efficient current sensing A switching power supply circuit in which a series circuit comprising a resistive element and a capacitive element is provided in a parallel configuration with an inductor which supplies a load current to a load circuit, a voltage comparator having first and second ... | 01/01/2008 |
| 7315154 | Voltage regulator A voltage regulator has an output MOS transistor connected between a voltage source and an output terminal. A voltage dividing circuit is disposed between the output terminal and GND. An error amplifier receives a reference voltage from a reference voltage circuit a... | 01/01/2008 |
