一种示波器双通道前置隔离电路的研究

Study on a Front Isolation Circuit for the Oscilloscope with Two Routes

介绍了一种利用高速光耦及电压负反馈等原理构成的示波器前置隔离电路 ,利用该电路实现了信号源与示波器输入端的电压隔离与跟随 。

An isolation circuit using the mechanism of high speed optocoupler and voltage negative feedback is introduced.It can realize the isolation and follow of voltage between signal source and the input point of oscilloscope by using the circuit. So it is helpful in solving the problem of observing two routes of signals that haven't the same reference ground.