Ceramic machinery equipment AC current acquisition circuit

The invention relates to a ceramic machinery equipment AC current acquisition circuit comprising a current acquisition network, an operation amplification circuit, a reference voltage circuit and a single-chip; an output end of the current acquisition network is connected with a non inverting input end of the operation amplification circuit; an output end of the reference voltage circuit is connected with the non inverting input end of the operation amplification circuit; an output end of the operation amplification circuit is connected with an ADC input end of the single-chip; the operation amplification circuit uses a differential amplifier circuit, uses level shift to improve input signal voltage, thus solving the problems that an operation amplifier cannot fully realize 0V output in single-power supply work, and realizing AC current bidirectional acquisition; the AC current acquisition circuit is wide in measuring range and high in precision; the AC current acquisition circuit uses single power supply so as to reduce power supply power source, and acquisition circuit complexity is not added; the circuit is concise in structure, easy to be implemented, thus saving cost.