摘要
提出通过同相求和运算电路对多个电流探头的输出信号进行求和运算的方法,设计可以实现多路噪声计电压信号相加的电路。采用集成运放构成同相求和运算电路,通过电源控制电路为运算放大器提供稳定的直流电压;选取合适的电阻和运算放大器,使电路实现符合要求的时域信号求和运算。电路输入阻抗为高阻,输出阻抗为低阻,模拟带宽为50 Hz^3 MHz。经过电路调试和试验,满足实际使用要求。
The development of a non-inverting summation circuit is presented to add together the output signals of several current sensors, which can combine multiple psophometrie voltage signals to be a total voltage. The integrated operational amplifier is used to constitute thenon-inverting summation circuit. A power control circuit is used to provide stable dc voltage. Appropriate resistances and amplifiers are used to complete time-domain signal operation. With high input impedance and low output impedance, the Analog bandwidth of the circuit is 50 Hz-3 MHz. After circuit debugging and test, expected requirements are achieved.
关键词
同相求和电路
噪声计电压
时域信号运算
non-inverting summation circuit
psophometrie voltage
time-domain signal operation
