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| Number | Title | Issue Date |
| 7362593 | Switching control circuit having off-time modulation to improve efficiency of primary-side controlled power supply A voltage-waveform detector produces a voltage-feedback signal and a discharge-time signal by multi-sampling a voltage signal of a transformer. The discharge-time signal represents a discharge time of a secondary-side switching current. A voltage-loop error amplifie... | 04/22/2008 |
| 7362592 | Switching control circuit for primary-side controlled power converters The present invention discloses a switching control circuit for a primary-side controlled power converter. A voltage-waveform detector produces a voltage-feedback signal and a discharge-time signal. A current-waveform detector generates a current-waveform signal by ... | 04/22/2008 |
| 7360006 | Apparatus and method for managing voltage buses The present technique relates to a method and apparatus for managing voltage buses. In a memory device, such as SRAM or DRAM, a periphery voltage bus may supply voltage to periphery circuitry and an array voltage bus may supply voltage to array circuitry. A bridge c... | 04/15/2008 |
| 7339363 | Variable gain received signal strength indicator An RSSI circuit provides a relatively inexpensive technique for accurately measuring received signal strength over a wide dynamic range. A received signal is processed by a rectifier circuit that generates a series of DC offsets of increasing magnitude. The DC offse... | 03/04/2008 |
| 7259972 | Primary-side-control power converter having a switching controller using frequency hopping and voltage and current control loops A power converter includes a switch and a controller. The switch switches electrical power in the power converter. The controller generates a switching signal to control the switch in response to a first feedback signal associated with a voltage control loop and a s... | 08/21/2007 |
| 7242114 | Thermostat device with line under frequency detection and load shedding capability A method for detecting line under frequency (LUF) events and initializing load shedding of loads located near the electrical disturbance without customer and utility intervention is disclosed. In one example embodiment, the LUF detection system measures the time per... | 07/10/2007 |
| 7212130 | Sound intensity display system for use by performers A sound intensity display system for use by performers. The invention is a system which displays indications of sound intensity on a display large enough to be viewed by performers distant from the display. This invention allows indication of a sufficient number of ... | 05/01/2007 |
| 7141991 | Instrumentation current loop An instrumentation current loop, including a transducer having transducer output terminals. A power source is connected in series to the transducer. A bridge has a first arm and a second arm extending between a pair of input terminals, where the input terminals of t... | 11/28/2006 |
| 7135849 | Extremal voltage detector with high input impedance An extremal voltage detector produces an output voltage from an operational amplifier having its non-inverting input terminal connected to a first node and its inverting input terminal connected to a second node. A number of identical metal-oxide-semiconductor field... | 11/14/2006 |
| 7109699 | Long range alternating current phasing voltmeter A long-range wireless phasing voltmeter having a high impedance AC voltmeter in series between two high impedance probes. Shielding surrounds and electrically isolates the voltmeter and probes that communicate wirelessly via a pair of frequency translators, thus eli... | 09/19/2006 |
| 7102379 | Apparatus and method for monitoring and/or analysis of electrical machines during operation An apparatus and a method for monitoring and/or analysis of electrical machines during operation, wherein the electrical machine has at least one generator with a shaft and drive means for driving this shaft, wherein the shaft is grounded at the first end of the gen... | 09/05/2006 |
| 7098798 | Process device with loop override A process device for use in a process control system includes output circuitry configured to couple to a process control loop. The output circuitry controls electrical current through the loop. Loop override circuitry is configured to override operation of the outpu... | 08/29/2006 |
| 7096304 | Apparatus and method for managing voltage buses The present technique relates to a method and apparatus for managing voltage buses. In a memory device, such as SRAM or DRAM, a periphery voltage bus may supply voltage to periphery circuitry and an array voltage bus may supply voltage to array circuitry. A bridge c... | 08/22/2006 |
| 7061225 | Apparatus and method thereof for measuring output current from primary side of power converter An apparatus and method thereof for measuring an output current from a primary side of a power converter are provided. A peak detector is designed to sample a peak value of a converted voltage of a primary-side switching current. A zero-current detector detects a di... | 06/13/2006 |
| 7034706 | Early warning and problem detection in rotating machinery by monitoring shaft voltage and/or grounding current A rotating machinery monitor provides a warning that is indicative of a developing problem with the rotating machinery. The rotating machinery monitor has at least one current sensor for detecting shaft grounding current and/or at least one voltage sensor for detect... | 04/25/2006 |
| 7030635 | Device for measuring supply voltage and method thereof A device for measuring voltage, including a voltage detecting portion for detecting a plurality of voltages and outputting a maximum voltage of the plurality of voltages, a voltage latching portion that receives a first output from the voltage detecting portion, and... | 04/18/2006 |
| 6993977 | Remote structural material evaluation apparatus A method of unobtrusive evaluation of structural material integrity without requiring physical contact for referencing integrity values, comprising: directing an impact source at said structural material; obtaining signal information from the structural material by ... | 02/07/2006 |
| 6992913 | Ferroelectric storage device In the present invention, a polarization having a lower polarization level than a saturation polarization is caused in a ferroelectric capacitor by applying a voltage that is lower than a saturation voltage to the ferroelectric capacitor. This allows a storage devic... | 01/31/2006 |
| 6977487 | Vehicular alternator failure determination apparatus using commutating device voltage A vehicular alternator failure determination apparatus is capable of making a failure determination accurately. The apparatus includes a maximum voltage detection part (1) for detecting a maximum voltage of an alternator commutating device which commutates an... | 12/20/2005 |
| 6936907 | Lateral high-voltage semiconductor devices with surface covered by thin film of dielectric material with high permittivity This invention provides a method or an auxiliary method to implement optimum variation lateral flux on a semiconductor surface. The method is to cover one or more thin films of high permittivity dielectric material on the semiconductor surface. The one or more films... | 08/30/2005 |
| 6937083 | Analog signal conditioning circuit having feedback offset cancellation Analog signal conditioning circuitry is provided for processing an analog signal generated by a sensor to remove DC offset. The signal conditioning circuitry includes an amplifier having the first input receiving an analog input signal and a second input receiving a... | 08/30/2005 |
| 6897644 | Apparatus and method for monitoring a signal An apparatus and a method for monitoring a signal are proposed. The apparatus comprises: a first detector (10) to which the signal is supplied and which, when the signal exceeds the predetermined first threshold value, emits a trigger signal, a second detecto... | 05/24/2005 |
| 6870358 | Methods and apparatuses for peak detection among multiple signals Digital peak detection among multiple signals, or inputs. In one embodiment, a detection method that includes receiving multiple digitized input signals. For each digitized input signal, the method also includes noting a first data value associated with the digitize... | 03/22/2005 |
| 6798188 | Voltage peak measurement with digital memory A technique for measuring peak voltages is provided that may be used in RF transceivers or receivers of wireless local area network systems. In an apparatus for measuring a peak value of an analog voltage, an analog to digital converter is connected to receive an in... | 09/28/2004 |
| 6798187 | Generator status information display for power transfer switch A power transfer arrangement is provided for supplying power from a generator to the electrical system of a building in the event of a utility power interruption. The power transfer arrangement has a power transfer switching mechanism adapted for interconnection wit... | 09/28/2004 |
| 6774617 | Peak detector for detecting a peak signal A peak detector for detecting a peak signal includes an input circuit to input an input signal, a track and hold circuit to hold the input signal and to output the peak signal, a comparator to compare the input signal and the peak signal to generate a clock signal, ... | 08/10/2004 |
| 6762601 | Non-invasive detectors for wells Detector circuitry for detecting magnetic field disturbances resulting from the movement of equipment through a pipe of magnetic material, the detector circuitry comprising a difference circuit fed with the outputs of two longitudinally spaced sensor means via respe... | 07/13/2004 |
| 6731103 | Peak detector circuit The present invention implements a peak detector circuit without the use of a DSP (digital signal processor) or ADC. A reference signal is produced that relates to a DAC output code. The reference signal is used as a starting point, and is compared to the input sign... | 05/04/2004 |
| 6720758 | Method and apparatus for monitoring an electrical current consuming device A method and an apparatus for monitoring an electrical power or current consuming device. In the method for monitoring a first time point at which a current value for current passing through the consuming device exceeds a first current threshold value and/or a secon... | 04/13/2004 |
| 6720757 | Variable gain received signal strength indicator An RSSI circuit provides a relatively inexpensive technique for accurately measuring received signal strength over a wide dynamic range. A received signal is processed by a rectifier circuit that generates a series of DC offsets of increasing magnitude. The DC offse... | 04/13/2004 |
| 6642703 | Peak detector and detecting method thereof The invention provides a peak detector having input signal triggering control and low frequency energy attenuation capability. The peak detector includes a charging unit and a discharging unit. By being triggered by a peak value detected in a received inp... | 11/04/2003 |
| 6512358 | Measuring device for measuring a process variable The invention is directed to a measuring device for measuring an industrial process variable with a predetermined maximum power consumption by the measuring device. More specifically, the invention relates to a measuring device for connection to a current... | 01/28/2003 |
| 6472861 | Peak detector A peak detector comprising of a comparator, an input-trigger device, a gate-width control block, an AND gate, a first current source, a second current source, a first switch, a second switch and a capacitor. The peak detector of this invention uses simple... | 10/29/2002 |
| 6456058 | Temperature stable integrated circuit full wave level detector incorporating a single operational amplifier stage design A temperature stable, integrated circuit full wave level detector incorporating a single stage operational amplifier design which does not require, as in prior art implementations, two operational amplifiers to perform a full wave rectification function o... | 09/24/2002 |
| 6429638 | N-diode peak detector A peak detector for measuring the voltage amplitude of low amplitude balanced digital signals. The N-diode peak detector uses the non-linear characteristics of a diode to convert a high speed low amplitude input signal into a DC voltage, linearly proporti... | 08/06/2002 |
| 6243652 | System for concurrent digital measurement of peak voltage and RMS voltage in high voltage system A voltage measurement system is provided which concurrently measures peak voltage and root mean square voltage. The voltage measurement system employs a digital peak detection circuit for peak voltage measurement. The voltage measurement system employs a ... | 06/05/2001 |
| 6091236 | System and method for measuring and analyzing electrical signals on the shaft of a machine The present invention provides a system and method for monitoring an electrical signal appearing on a rotating machine shaft. The system comprises a probe assembly for placement against the rotating machine shaft that is in electrically conductive contact... | 07/18/2000 |
| 5777465 | Circuitry and method for sensing spatial transitions sensed with a magnetic sensor A circuit for use with a magnetic sensing device having at least first and second sensors has a summing amplifier for providing a difference signal and a peak detector for detecting peaks in the difference signal. The peaks determine a spatial offset of a... | 07/07/1998 |
| 5721486 | Method and device for determining the position of a rotating cogwheel The device proposed comprises a Hall sensor (101) with an associated magnet (102), a pulse-generation wheel (104) rotating at an angular speed w and fitted with teeth having a rising and falling face, the wheel turning in front of the sensor to generate a... | 02/24/1998 |
| 5706222 | Multiple mode peak detector A peak detector having several novel detection modes including detecting a pair of peaks with opposite polarity and selecting whether or not the peaks must cross programmed thresholds to be detected. The novel detection modes together with several known d... | 01/06/1998 |
