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公开(公告)号：US20190138758A1
公开(公告)日：2019-05-09
申请号：US15808607
申请日：2017-11-09
CPC分类号： G06G7/25 , G01R19/003 , G01R19/04 , H02J7/0077 , H03K5/1532 , H05B33/08
摘要： A peak detector circuit includes a first capacitor coupled to an inverter and a first switch in parallel with the inverter. An input of the inverter couples to second and third switches. The second switch couples to an input voltage node. The third switch couples to an output voltage node of the peak detector circuit. The peak detector circuit includes a second capacitor coupled to the third switch and a third capacitor coupled to the second capacitor by way of a fourth switch. The third capacitor couples via a fifth switch to a power supply voltage node or a ground. A periodic control signal causes the first, second, and third switches to repeatedly open and close and a second control signal causes the fourth and fifth switches to open and close to adjust an output voltage on the output voltage node towards an input voltage on the input voltage node.
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公开(公告)号：US20180252752A1
公开(公告)日：2018-09-06
申请号：US15449514
申请日：2017-03-03
申请人： Woodward, Inc.
CPC分类号： G01R19/04 , F02D41/20 , F02D41/2096 , F02D41/221 , F02D41/2422 , F02D41/2467 , F02D41/248 , F02D2041/2037 , F02D2041/2048 , F02D2041/2055 , F02D2200/0618 , F02D2200/063 , F16K37/0083 , G01R17/00 , H01F7/1805 , H01F7/1844
摘要： The subject matter of this specification can be embodied in, among other things, a method for characterizing a fluid injector that includes receiving a collection of waveform data, identifying a pull locus, determining a detection threshold level value, identifying a first subset of the collection of data representative of a selected first electrical waveform of the collection of electrical waveforms, identifying an opening value, identifying a representative closing value, identifying an anchor value, identifying a second subset of the collection of data based on the collection of data, the pull locus, the first subset, and the opening value, identifying a maximum electrical value, identifying an opening locus based the collection of data, the anchor value, and the maximum electrical value, identifying a hold value, and providing characteristics associated with the fluid injector comprising the pull locus, the opening locus, the hold value, the anchor value, and the representative closing value.
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公开(公告)号：US20180164579A1
公开(公告)日：2018-06-14
申请号：US15838843
申请日：2017-12-12
发明人： Elik Haran , Offir Duvdevany , Naomi Petrushevsky
IPC分类号： G02B26/08 , G02B26/10 , H02P25/032 , G01R19/04
CPC分类号： G02B26/085 , G01R19/04 , G02B26/0833 , G02B26/105 , H02P25/032
摘要： Disclosed herein is an electronic device that includes a peak detection circuit configured to receive a mirror sense signal from an oscillating mirror and to generate peak information for a mirror period as a function thereof. The electronic device includes a mirror control circuit that estimates an opening angle of the oscillating mirror as a function of the peak information, generates a control signal for the oscillating mirror as a function of the estimated opening angle, and resets the peak detection circuit at an end of the mirror period.
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公开(公告)号：US20180131337A1
公开(公告)日：2018-05-10
申请号：US15730918
申请日：2017-10-12
申请人： DENSO CORPORATION
发明人： Kazutaka HONDA
CPC分类号： H03F3/45179 , G01R1/20 , G01R19/0053 , G01R19/0084 , G01R19/04 , G01R19/16519 , H03F3/45475 , H03F2203/45514 , H03F2203/45551 , H03K5/08 , H03K17/002
摘要： A voltage detection circuit includes two detection capacitors, which are paired and configured differentially, first to third detection switches, a drive part, a minimum selector and a maximum selector. The first detection switch is formed of a pMOS transistor, which opens and closes a path between one of the detection capacitors and an input node. The second detection switch is formed of an nMOS transistor, which opens and closes a path between the other of the detection capacitors and an input node. The third detection switch is formed of a series circuit of a pMOS transistor and an nMOS transistor, which open and close a path between two detection capacitors. The driving part turns on and off complementarily between the first and second switches and the third detection switch. The minimum selector applies a lower one of voltages of the input nodes as a substrate potential of the nMOS transistor. The maximum selector applies a higher one of the voltages of the input nodes as a substrate potential of the pMOS transistor.
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公开(公告)号：US09941795B1
公开(公告)日：2018-04-10
申请号：US15491320
申请日：2017-04-19
发明人： John Mayega , Kemal Ozanoglu , Mark Childs , Turan Solmaz
CPC分类号： G01R19/04 , G01R19/003 , H02M3/156 , H02M2001/0009 , H02M2001/0025 , H02M2003/1586
摘要： An average load current calculator circuit configured for determining an average load current within an at least one phase switch mode power converter (SMPC) having at least one peak/valley detector receives an inductor current sense signal and determines and holds a peak or valley amplitude of the inductor current sense signal. A current corrector circuit receives an input voltage and an output voltage of the SMPC and an inductance value of the inductor of the SMPC for determining an average correction current of the peak or valley amplitude of the current sense. An average current generator receives the peak or valley amplitude of the current sense signal and the average correction current for determining the instantaneous average load current within a switch mode power converter (SMPC) by additively combining the peak or valley amplitude of the current sense signal and the average correction current.
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公开(公告)号：US09906159B2
公开(公告)日：2018-02-27
申请号：US14237281
申请日：2012-08-03
申请人： Richard Lee Harkin
发明人： Richard Lee Harkin
CPC分类号： H02M7/10 , G01R19/04 , G01R19/16547 , H02M1/08 , H02M1/10 , H02M1/32 , H02M1/36 , H02M5/4585
摘要： In some examples, a control module for a voltage converter may have an input for connection to an AC supply having an operating voltage range. A first detector is provided for detecting the operating voltage range of the AC supply and generating a first control signal to identify the detected operating voltage range. A second detector is also provided for detecting the operating voltage range of the AC supply and generating a second control signal to identify the detected operating voltage range. The control module has one or more switches for selectively enabling and/or disabling a voltage multiplier in response to said first and second control signals. The present disclosure also relates to a method of controlling a voltage converter.
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公开(公告)号：US20170343590A1
公开(公告)日：2017-11-30
申请号：US15247971
申请日：2016-08-26
申请人： Byung-Hak Cho
发明人： Byung-Hak Cho
CPC分类号： G01R19/04 , G01R19/0084
摘要： The present disclosure relates to a hand-held voltmeter measuring a peak voltage of a high voltage pulse applied to an electric fence. The voltmeter includes a body case of which one side has an opening, a sensor case protruded from the opening of the body case, a voltage divider disposed over the inside and the outside of the sensor case for dividing the high voltage pulse into a low divided voltage, a peak detector for detecting the peak voltage of the divided voltage, a display unit for displaying the peak voltage, and an MCU for controlling the input and the output of the elements constituting the voltmeter. According to the present disclosure, an electric fence voltmeter that measures the peak voltage accurately without need to make a ground connection to the earth, and has a low risk of an electric shock during a measurement is provided.
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公开(公告)号：US20170343589A1
公开(公告)日：2017-11-30
申请号：US15163380
申请日：2016-05-24
IPC分类号： G01R19/04
CPC分类号： G01R19/04 , H03D1/2272 , H03D1/229
摘要： A reduced-stage feedback-based envelope detector includes, for example, an input rectifier for rectifying a received modulated input signal and an amplifier for receiving the rectified modulated input signal at an input node. The amplifier compares the rectified modulated input signal with a reference signal, filters the rectified modulated input signal at the input node, and generates an envelope detection signal in response to the comparison and the filtering of the rectified modulated input signal. In an embodiment, the gain of the amplifier is independently determined from the bandwidth of the amplifier.
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公开(公告)号：US09817041B2
公开(公告)日：2017-11-14
申请号：US15027272
申请日：2013-10-18
申请人： Yi Yin
发明人： Yi Yin
CPC分类号： G01R19/04 , G01R21/01 , G01R29/0892
摘要： A peak detector circuit comprises a first output coupled to ground by a first load and to emitter terminals of first and second switching devices. A second output is coupled to ground by a second load and to emitter terminals of third and fourth switching devices. A third output is coupled to a supply voltage node by a third load and to collector terminals of the first and second switching devices. A fourth output is coupled to the supply voltage node by a fourth load and to collector terminals of the third and fourth switching devices. The first, second, third, and fourth switching devices have control terminals which are biased with a common bias voltage. The first, second, third and fourth load are selected so that R1=R2=αf*R3=αf*R4, with R1, R2, R3, R4 being a resistance of the first, second, third and fourth loads, respectively, and αf a common-base current gain of the switching devices.
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公开(公告)号：US09804204B2
公开(公告)日：2017-10-31
申请号：US13238418
申请日：2011-09-21
申请人： Anil Nagpal , Ataur Rahman
发明人： Anil Nagpal , Ataur Rahman
CPC分类号： G01R19/04 , G01R1/06777 , G01R1/06788 , G01R1/07 , G01R19/02 , G01R25/005
摘要： A high voltage phasing voltmeter comprises first and second probes. Each probe comprises an electrode for contacting a high voltage electrical conductor. The electrodes are connected in series with a resistor. A meter comprises a housing enclosing an electrical circuit for measuring true rms voltage. The electrical circuit comprises an input circuit for connection to the first and second probes and developing a scaled voltage representing measured voltage across the electrodes. A converter circuit converts the scaled voltage to a DC signal representing true rms value of the measured voltage. A peak hold circuit is connected to the converter circuit to hold a peak value of the true rms value. A display is connected to the peak hold circuit for displaying the peak value of the true rms value.
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