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| Number | Title | Issue Date |
| 8093905 | Power supply device and sequencer system A smoothing unit includes a first and a second smoothing capacitors, a first and a second discharge resistors connected in parallel to both ends of the first and the second smoothing capacitors, respectively. During a normal operation, both the first and the second ... | 01/10/2012 |
| 8089284 | Impedance measuring method An impedance measuring method uses an impedance measuring device for measuring an impedance of a measured electronic component, a coaxial connector electrically connected to the impedance measuring device, and a measurement substrate which can be housed in the coaxi... | 01/03/2012 |
| 8054085 | Programmable gain trans-impedance amplifier overload recovery circuit Embodiments of an apparatus for measuring the leakage current of capacitive components is taught. One embodiment includes a first stage amplifier configured to receive an input from a serially-connected capacitive component at an inverting input and a feedback resis... | 11/08/2011 |
| 8004288 | Methods and apparatus for testing of high dielectric capacitors The present subject matter provides apparatus and methods for testing high dielectric capacitors. A testing process whereby voltage and temperature is varied to provide temperature dependent plots to determine the reliability of a capacitor is provided. A testing sy... | 08/23/2011 |
| 7977952 | Polymeric structures and methods for producing and monitoring polymeric structures A method for monitoring a component formed of a polymer material, and the polymer component. The component includes an electrically-conductive polymer sensing element integrally incorporated into the component. An electric potential is applied to the polymer sensing... | 07/12/2011 |
| 7969160 | Electrolytic capacitor The electrolytic capacitor has an insulating casing, at least one capacitor element and multiple external terminals. The casing has multiple through holes and mounting protrusions. The at least one capacitor element is mounted in the casing and has multiple inner co... | 06/28/2011 |
| 7940058 | Capacitive measurements with fast recovery current return An apparatus and method for measuring the leakage current of capacitive components. A switch that grounds a terminal of a component being tested is closed while the component is charged to a desired test voltage. When this charging is complete, the switch opens so t... | 05/10/2011 |
| 7839151 | Solid electrolytic capacitor inspection device and inspection method A capacitor inspection device includes a substrate made of an insulating material, a first conductor unit and a second conductor unit arranged on the substrate, a signal input unit and a signal output unit attached to the substrate, a network analyzer and a pressuri... | 11/23/2010 |
| 7683630 | Self test, monitoring, and diagnostics in grouped circuitry modules A rotary capacitor electrical test system for providing a power source to a capacitor under electrical test can include at least one programmable voltage source, at least one programmable current source, and a controller for programming the voltage and current sourc... | 03/23/2010 |
| 7671603 | Screening of electrolytic capacitors A method for screening electrolytic capacitors places a capacitor in series with a resistor in series with a resistor, applying a test voltage and following the charge curve for the capacitor. A high voltage drop indicates high reliability and a low voltage drop is ... | 03/02/2010 |
| 7649361 | Methods for forming process test capacitors for testing embedded passives during embedment into a printed wiring board Making process test capacitors simultaneously with circuit capacitors that are to be embedded into a printed wiring board and firing the test capacitors to result in fired-on-foil test capacitors for the purpose of using the test capacitors as test substitutes for t... | 01/19/2010 |
| 7609070 | Manufacturing method and controlling method of electronic device A manufacturing method of an electronic device includes applying a direct voltage having a first polarity to a capacitor that has an insulating layer including nitrogen and silicon as a capacitor dielectric layer, testing the capacitor to which the direct voltage ha... | 10/27/2009 |
| 7602192 | Passive station power distribution for cable reduction A power distribution system for a rotary capacitor electrical tester includes a power source, an active station having plurality of test channels powered by the power source through cables connected to one side an upper contact module of the active station, and an o... | 10/13/2009 |
| 7482816 | Voltage monitor and electrical storage device using the same In a voltage monitor that measures voltages applied to the terminals of each of a plurality of capacitors constituting a storage section, the each voltage applied to a connecting point between terminals of the capacitors in charging operation, is divided by resistor... | 01/27/2009 |
| 7432616 | Inverter device In the inverter device of the invention, when a power source connected to an electrolytic capacitor 5 is interrupted, a switching control circuit 6a controls switching elements of an inverter main circuit 7a to operate to supply a ... | 10/07/2008 |
| 7425834 | Method and apparatus to select a parameter/mode based on a time measurement Techniques are disclosed to select functional parameters and/or operating modes of a circuit based on a time measurement are disclosed. One example integrated circuit includes a threshold detection and timing circuit that is coupled to measure a signal during an ini... | 09/16/2008 |
| 7385404 | Arrangement and method for testing a capacitance array in an integrated circuit An arrangement for testing a plurality of capacitances in a capacitance array of an integrated circuit includes a power supply and a means for cyclically charging and discharging at least one of the capacitances. In this arrangement, the cycle frequency is dependent... | 06/10/2008 |
| 7380891 | Power supply apparatus for vehicle A power supply apparatus for a vehicle. An electronic controller outputs information for controlling braking of a vehicle. A battery supplies electric power to a brake via the electronic controller. A power supply backup unit as an auxiliary power supply includes a ... | 06/03/2008 |
| 7340365 | Method and apparatus for verifying the operation of a plurality of test system instruments In a method for verifying the operation of a plurality of test system instruments, a harness cable is electrically coupled to a plurality of test signal ports on the plurality of test system instruments. A first plurality of test measurements are then initiated via ... | 03/04/2008 |
| 7327148 | Method for using internal semiconductor junctions to aid in non-contact testing Capacitive leadframe testing techniques are improved through knowledge of characteristics of semiconductor junctions specific to nodes of device under test (DUT) that are connected to nodes under test of the DUT. ... | 02/05/2008 |
| 7323886 | Linear capacitance measurement and touchless switch Capacitance measurement apparatus that enhances the sensitivity and accuracy of capacitive transducers, proximity sensors, and touchless switches. Each of two capacitors (C1, C2) under measurement has one end connected to ground and is kept at substant... | 01/29/2008 |
| 7321416 | Lithographic apparatus, device manufacturing method, device manufactured thereby, and controllable patterning device utilizing a spatial light modulator with distributed digital to analog conversion The present invention comprises a lithographic apparatus and device manufacturing method method that uses a patterning device that increase a number of individually controllable elements that are programmed simultaneously to increase an update rate of an array of in... | 01/22/2008 |
| 7319421 | Foldback free capacitance-to-digital modulator A capacitance-to-digital (CD) modulator converts capacitance of a differential pressure sensor to a pulse code modulation output signal. The first stage of the CD modulator is a sigma-delta integrator having an auto-zero capacitor connected between an integrator inp... | 01/15/2008 |
| 7307485 | Capacitance sensor using relaxation oscillators An apparatus that may be used to sense capacitance, as well as other functions. The apparatus includes a comparator circuit with hysteresis, a capacitor, and a current driver. The comparator circuit with hysteresis includes a first input and an output. The capacitor... | 12/11/2007 |
| 7301440 | Power line communication system and method The present invention provides a device for providing communications through power lines comprised of multiple conductors by transmitting the data signals through a plurality of the conductors. One embodiment of the present invention may be comprised of a transmit c... | 11/27/2007 |
| 7285927 | Control apparatus for electric motor of inverter system and control apparatus for electro mechanical brake A relay switch for selectively connecting a power supply line of an inverter to a ground line is inserted between the inverter and a power source, and a power consumption unit such as a resistor element is inserted between the relay switch and ground line. ... | 10/23/2007 |
| 7277779 | Real-time emergency control in power systems The present invention is concerned with a method for real-time emergency control of power transmission networks, based on a modification of the model predictive control (MPC) approach. Following the detection of a contingency at time tc only one nominal t... | 10/02/2007 |
| 7253604 | Assembled capacitor polarity automatic inspecting method and system An assembled capacitor polarity automatic inspecting method and system is proposed, which is designed for use to perform an automatic inspecting procedure to check whether an array of polarized capacitor are mounted correctly in polarity on a circuit board; and whic... | 08/07/2007 |
| 7245180 | Intelligent RF power control for wireless modem devices A bypass circuit is disclosed for use with lower power supply voltage PC cards. The bypass circuit controls the power supply voltage fed to a power amplifier when switching between a lower power 8-PSK modulation mode and a higher power GMSK modulation mode. A step-u... | 07/17/2007 |
| 7236113 | Capacitance-to-digital modulator with sensor failure-mode detection A pressure transmitter having a capacitance-to-digital modulator produces an output as a function of sensor capacitance and a reference capacitance. Transmitter also includes a sensor failure mode detector produces an output signal and identifies failure modes of th... | 06/26/2007 |
| 7230434 | Multi-layered capacitor According to the present invention, a multi-layered capacitor includes a first capacitive element having a first conductor plate formed on a first layer, a second conductor plate formed on a second layer and an insulator arranged between the first and second conduct... | 06/12/2007 |
| 7215127 | Detecting fixture and method thereof for detecting capacitors A detecting fixture for detecting a capacitor with leakage current among a capacitor group in parallel connection includes a reference voltage generator, an impedance converter, a comparator and a display unit. Wherein, the reference voltage generator is used for ou... | 05/08/2007 |
| 7215090 | Control apparatus for electric motor of inverter system and control apparatus for electro mechanical brake A relay switch for selectively connecting a power supply line of an inverter to a ground line is inserted between the inverter and a power source, and a power consumption unit such as a resistor element is inserted between the relay switch and ground line. ... | 05/08/2007 |
| 7212011 | Capacitor deterioration judgment method A method for determining the deterioration of a capacitor that increases the measurement accuracy to have an improved reliability is disclosed. In this method for determining the deterioration of a capacitor, the deterioration of a capacitor including a pair of elec... | 05/01/2007 |
| 7199590 | Screening method for laminated ceramic capacitors A laminated ceramic capacitor C has a plurality of internal electrodes embedded in a dielectric base substance in a stratified manner, the internal electrodes are caused to conduct to a pair of terminal electrodes provided on an outer surface of the dielectric base ... | 04/03/2007 |
| 7173432 | Method and machine for repetitive testing of an electrical component A method automatically tests a parameter of an electronic component to determine whether the component has an acceptable value. The method employs an automatic electronic component testing machine having at least first and second measurement positions where the para... | 02/06/2007 |
| 7148697 | System and method for measuring electrical characteristics of a capacitor Disclosed are a system and method for measuring electrical characteristics of a capacitor. A measurement assembly can include a constant current assembly for selectively charging and discharging the capacitor and a counter incremented during a measurement period of ... | 12/12/2006 |
| 7132835 | PLL with built-in filter-capacitor leakage-tester with current pump and comparator A filter capacitor within a phase-locked loop (PLL) can be tested using a built-in test circuit. The PLL's charge pump is deactivated while a test-current source is activated to supply a test current to the PLL filter capacitor. When the test current is larger than ... | 11/07/2006 |
| 7126322 | Circuit to characterize matching of energy-storage components A circuit to characterize the matching of energy-storage components is provided. The circuit includes a linear resistor and a power source. The circuit is electrically connected to two serially connected energy-storage elements, for example, a pair of capacitors. Th... | 10/24/2006 |
| 7084638 | Intermediate circuit capacitor short-circuit monitoring The electronic monitoring circuit for monitoring one of a group of series-connected capacitor units in an intermediate circuit in order to detect short-circuiting of one of the capacitor units includes a device for deriving a reference voltage (14) from an in... | 08/01/2006 |
