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4results about "Measurement using dc-ac conversion" patented technology
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Electric current measurement circuit, stage apparatus, and control method of actuator
Owner:SUMITOMO HEAVY IND LTD
Calibration for routing resistance induced error
ActiveUS12650460B2Measurement using dc-ac conversionAutomated test systemsElectrical resistance and conductanceTelecommunications
In some examples, a method of performing measurement of a device under test (DUT) coupled to a connector includes determining a first voltage signal representative of a current of the DUT, the current flowing through the connector. The method also includes determining a second voltage signal representative of a voltage of the DUT, as provided at the connector. The method also includes determining a calibration current according to the first voltage signal. The method also includes modifying measurement of the DUT according to the calibration current.
Owner:TEXAS INSTRUMENTS INC
Signal processing circuit with zero crossing detection
PCT designated stageWO2026131310A1Measurement using dc-ac conversionVoltage/current isolationSignal processing circuitsSoftware engineering
Signal processing circuit (10) comprising a modulation unit (11) for generating a modulated signal, an amplification unit (12) for amplifying the modulated signal and thereby creating an amplified modulated signal and a demodulation unit (14) for demodulating the amplified modulated signal and thereby creating a demodulated signal. The signal processing circuit (10) further comprises a zero current detection unit (13) connected to an output of the amplification unit (12) upstream of the demodulation unit and configured to detect a zero crossing of a current based on the amplified modulated signal.
Owner:LEM INT SA
Bi-directional power factor correction control
PendingUS20260163478A1Measurement using dc-ac conversionMeasurement using ac-dc conversion
Apparatuses, devices, and systems for operating a voltage converter to reduce current spike are described. A controller can measure a feedback of a current of an alternating current (AC) voltage of a switching circuit. The controller can measure a direct current (DC) voltage of the switching circuit. The controller can operate a current control loop using the feedback of the current to determine a target voltage. The controller can determine a duty cycle of the switching circuit based on the target voltage and the DC voltage. The controller can operate the switching circuit under the determined duty cycle to control the current of the AC voltage.
Owner:RENESAS ELECTRONICS CORP