Alternating current sampling circuit of transformer area intelligent fusion terminal
An AC sampling and circuit technology, applied in the direction of circuit devices, measuring electricity, electrical components, etc., can solve the problems of data loss, low AC sampling accuracy, insufficient power supply, etc., and achieve the effect of improving sampling accuracy
Pending Publication Date: 2022-05-13
ZHEJIANG WELLSUN INTELLIGENT TECH CO LTD
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The invention relates to the technical field of electronic measurement, in particular to an alternating current sampling circuit of a transformer area intelligent fusion terminal. Comprising a voltage signal step-down circuit, a current signal acquisition circuit, a metering chip, a communication electrical isolation circuit, an active pulse output isolation circuit and a reactive pulse output isolation circuit, the voltage signal step-down circuit converts a strong current voltage signal into a weak current voltage signal, and the current signal acquisition circuit converts a strong current current signal into a weak current current signal. The metering chip is used for converting a weak current voltage signal and a weak current signal into a digital sampling signal, an active pulse signal and a reactive pulse signal respectively, the communication electrical isolation circuit outputs the digital sampling signal, the active pulse output isolation circuit outputs the active pulse signal, and the reactive pulse output isolation circuit outputs the reactive pulse signal. Through the above structure, the sampling precision is improved, and stable operation can be realized by using a standby power supply after power failure.
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