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| Number | Title | Issue Date |
| 7924045 | Apparatus, system, and method for error detection in a stand alone power supply An apparatus for error checking in a power supply includes a power module that determines that the power supply is in a self-test condition. The self-test condition involves the power supply being connected to an input power source while it is disconnected from the ... | 04/12/2011 |
| 7902854 | Body capacitance electric field powered device for high voltage lines Devices that couple to high voltage transmission lines obtain power themselves using the body capacitance of an element of the devices. The devices generate a comparatively lower voltage from the current flowing between the high voltage line and the element of the d... | 03/08/2011 |
| 7847578 | Power supply circuit and test apparatus Provided is a power supply circuit that supplies power to a load, including a power supply section that outputs a power supply current, a driver section that receives the power supply current from the power supply section and supplies the load with a load current th... | 12/07/2010 |
| 7834651 | Power supply circuit Provided is a power supply circuit that supplies an electronic device with a supply power, including a voltage control section that outputs a control voltage that tracks an input voltage with a prescribed frequency characteristic and applies a voltage corresponding ... | 11/16/2010 |
| 7768292 | Non-invasive power supply tester The output current of a switching regulator in operation on a printed circuit board can be accurately measured without opening the circuit, and without specially dedicated sensing components in the regulator. The inherent series resistance of an inductor or similar ... | 08/03/2010 |
| 7759964 | Apparatus, system, and method determining voltage, current, and power in a switching regulator An apparatus, system, and method are disclosed for measuring voltage, current, and power in a power supply. The apparatus consists of a voltage measuring module which measures the peak voltage through an inductor in a switching power supply stage of the power supply... | 07/20/2010 |
| 7746094 | Testing system for power supply A testing system for a power supply (40) includes a testing chamber (10), a control switch, an electrical load (50), an AC source (60), and a PLC (30). The power supply has a voltage choice switch. The testing chamber receives the ... | 06/29/2010 |
| 7737718 | Power supply assembly and semiconductor testing system using same A power supply assembly that can be miniaturized even though an applied voltage to a load is rendered variable, and a semiconductor testing system using the same are put into practice. With an improvement of the power supply assembly for finding an error against a s... | 06/15/2010 |
| 7733116 | Method of testing a power supply controller and structure therefor A power supply controller (20) is configured to operate in a test mode that facilitates measuring the value of an output signal of an error amplifier (36) of the power supply controller (20). ... | 06/08/2010 |
| 7683652 | Low-voltage detection circuit A low-voltage detection circuit detects a low voltage using a voltage follower type operational amplifier and an A/D converter instead of a conventional low-voltage detection circuit. That is, a reference voltage is applied from a reference voltage generating circui... | 03/23/2010 |
| 7679394 | Power supply noise resistance testing circuit and power supply noise resistance testing method Provided is a power supply noise resistance testing circuit, in which a test pattern is applied to a data input portion of a functional block formed on a semiconductor chip and a voltage on which a power supply noise is superimposed is supplied to a power supply por... | 03/16/2010 |
| 7667482 | Inductively powered power bus apparatus An apparatus for a power bus includes an inductive power harvesting unit structured to provide a first power output arising from current flowing in the power bus, an energy storage unit structured to store energy from the first power output and to provide a second p... | 02/23/2010 |
| 7646208 | On-chip detection of power supply vulnerabilities On-chip sensor to detect power supply vulnerabilities. The on-chip sensor employs a sensitive delay chain and an insensitive delay chain to detect power supply undershoots and overshoots without requiring external off-chip components. Undershoots and overshoots outs... | 01/12/2010 |
| 7570073 | System for testing power supply performance A system for testing power supply performance is provided. The system includes a power supply having a plurality of outputs for outputting voltages, a plurality of display units corresponding to the plurality of outputs, for reflecting performance of the power suppl... | 08/04/2009 |
| 7538570 | Supply voltage monitoring An integrated circuit is provided with a distributed supply voltage monitoring system in which a single controller controls a plurality of voltage monitors located in respective modules of the integrated circuit. The controller and each circuit form a successive app... | 05/26/2009 |
| 7504849 | On failure detecting apparatus of power supply circuit An ON failure detecting apparatus detects an ON failure of an FET T1 of a power supply circuit which includes the FET T1 disposed between a battery E and a load RL, and controls driving and stopping of the load RL. The ON failure detecting apparatus in... | 03/17/2009 |
| 7466162 | Electronic load An electronic load includes a current control circuit and an interface circuit. The current control circuit is used for receiving a voltage, and outputting a measured current. The interface circuit is coupled to the current control circuit, for receiving the measure... | 12/16/2008 |
| 7449912 | Fault detection circuit Power supplies are disclosed herein. One embodiment of a power supply comprises a first input and a second input, wherein the first input and the second input are connectable to a pulse width modulation controller and wherein a pulse width modulation signal is outpu... | 11/11/2008 |
| 7436200 | Apparatus for testing a power supply The present invention is an apparatus for testing a power supply. A power supply testing apparatus may include a remote load which may sink an adjustable amount of current with an adjustable slew rate and may test the response of the power supply to determine its op... | 10/14/2008 |
| 7427855 | Circuit for measuring inrush current A circuit for testing an inrush current of a power supply includes a rectifier (10), a capacitor (30), and an ammeter (90). The rectifier includes input terminals (1) adapted to connect with an AC supply (Vin), and output terminals (3 | 09/23/2008 |
| 7423445 | Method and system for trimming voltage or current references Trim codes are determined for semiconductor devices under test (DUTs), wherein the trim codes correspond to voltage or current reference value adjustments that cause the DUTs to generate desired voltage or current reference values. The technique involves supplying r... | 09/09/2008 |
| 7414424 | Directional power detection by quadrature sampling Power measurement and control in transmission systems are affected by changes in load conditions. A method and system are provided for detecting and controlling power levels independent of such load conditions. ... | 08/19/2008 |
| 7408475 | Power supply monitoring device In a power supply monitoring device, a power supply voltage monitoring portion always monitors a power supply voltage supplied to a monitored circuit and outputs a voltage reduction signal when detecting that the power supply voltage is reduced below a predetermined... | 08/05/2008 |
| 7405553 | Load testing of uninterrupted power supply systems using regenerative loading by supplying percentage of a test power To ensure high level of reliability, it is desirable to test an electrical device, such as an uninterruptible power supply (UPS) system, periodically with minimum possible energy usage and without compromising reliability. A regenerative load (RGL) unit is described... | 07/29/2008 |
| 7397267 | Voltage detecting circuit A power supply voltage detecting circuit includes a voltage regulating circuit, a comparative circuit, a timer circuit, and a display circuit. The voltage regulating circuit provides a stable reference voltage to the comparative circuit. The comparative circuit comp... | 07/08/2008 |
| 7372289 | Semiconductor integrated circuit device and power supply voltage monitor system employing it A semiconductor integrated circuit device, i.e. a reset IC(1), includes: a detection circuit (4) for detecting whether an input voltage (Vin) has risen or dropped by comparing the input voltage (Vin) with a reference voltage; a delay circuit (8)... | 05/13/2008 |
| 7365596 | State retention within a data processing system Power consumption may be reduced through the use of power gating in which power is removed from circuit blocks or portions of circuit blocks in order to reduce leakage current. One embodiment uses a modified state retention flip-flop capable of retaining state when ... | 04/29/2008 |
| 7355435 | On-chip detection of power supply vulnerabilities On-chip sensor to detect power supply vulnerabilities. The on-chip sensor employs a sensitive delay chain and an insensitive delay chain to detect power supply undershoots and overshoots without requiring external off-chip components. Undershoots and overshoots outs... | 04/08/2008 |
| 7339366 | Directional coupler for a accurate power detection A power detection system implemented using a pair of directional couplers and a transmission line (or equivalent) disposed between the directional couplers, wherein the transmission line (or equivalent) provides a 90° phase shift between the directional couplers. A... | 03/04/2008 |
| 7315790 | System, and method for quantifying voltage anomalies A system and method of quantifying voltage anomalies may be used to quantify low frequency voltage transients such as the type caused by power factor correction (PFC) or similar events. The system and method of quantifying voltage anomalies receives sampled voltage ... | 01/01/2008 |
| 7312614 | Commutator for power supply testing A commutator for power supply testing includes a printed circuit board (PCB), a plurality of connectors soldered on the PCB and coupling a power supply with an electronic load, a plurality of indicator light showing whether the power supply coupled to the commutator... | 12/25/2007 |
| 7312605 | AC power supply testing module and method for booting a main board An AC power supply testing method upon booting a main board is provided. The testing method is applied to a main board, a microprocessor is in connection with the main board, and a relay is connected with the microprocessor, an AC power supply and a system power sup... | 12/25/2007 |
| 7301361 | Logic circuit for board power-supply evaluation and board power-supply evaluating method A logic circuit for board power-supply evaluation to be incorporated into a logic device loaded on a product board includes a circuit that simulates an operation of the logic device so that utilization rate is variable at an arbitrary frequency by use of a predeterm... | 11/27/2007 |
| 7298167 | Power supply system A system for detecting a fault in a power supply having at least one power supply unit and a redundant power supply unit. The system includes a printed circuit board and a common voltage bus disposed on the printed circuit board. A plurality of diodes is disposed on... | 11/20/2007 |
| 7298166 | Loading device A loading device for conducting a loading test of an objective power source to be tested comprises a rectifier connected to the objective power source to be tested and a resistor connected to the rectifier, the resistor including a retention tank for collecting elec... | 11/20/2007 |
| 7292059 | Power supply assembly for a semiconductor circuit tester A power supply assembly includes a dielectric substrate and a power supply circuit supported by the dielectric substrate. A conductive connection block is attached to the dielectric substrate at a main surface thereof and is connected to a power supply terminal of t... | 11/06/2007 |
| 7289934 | Noise measuring system, noise measuring method, and semiconductor device A semiconductor device includes an output driver circuit for generating noise on wiring for a power supply using a trigger signal input from measuring equipment and a noise measuring circuit. The noise measuring circuit includes a comparator circuit for comparing a ... | 10/30/2007 |
| 7282944 | Body capacitance electric field powered device for high voltage lines Devices that couple to high voltage transmission lines obtain power themselves using the body capacitance of an element of the devices. The devices generate a comparatively lower voltage from the current flowing between the high voltage line and the element of the d... | 10/16/2007 |
| 7276901 | Method for shunt detection in sensors For monitoring a sensor using differential voltage evaluation for detecting a short circuit to ground and/or to supply voltage UB, a first resistor and a second resistor R1, R2 are assigned to the sensor, a sum voltage is determined ... | 10/02/2007 |
| 7248006 | Electronically controlled electric motor A system for controlling an electric motor comprises, in one embodiment, an encoder; a central processor in communication with said encoder; a module processor in communication with said central processor; feedback circuitry in communication with said module process... | 07/24/2007 |
