Differential amplification circuit

The utility model discloses a differential amplification circuit, the differential amplification circuit comprises a filtering unit, a voltage stabilization unit and a signal amplification unit, the filtering unit, the voltage stabilization unit and the signal amplification unit are connected in sequence, the filtering unit receives a signal of a current sensor; the circuit has the advantages that weak signals are amplified, and signal acquisition is facilitated. 本实用新型公开了一种差分放大电路，所述差分放大电路包括滤波单元、稳压单元及信号放大单元，所述滤波单元、稳压单元及信号放大单元顺次连接，所述滤波单元接收电流传感器的信号；本实用新型的优点在于：放大微弱的信号，便于信号采集。