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模拟放大器通过采用光电元件可以把它的输入与输出隔离开.这类电路在大多数宇宙飞船电子系统中很有用,因为它要求信号地与电源地隔离.同样,在普通的电源调整电路里也需要把信号电压从与电源电压接地的电路转换到与电源电压回线接地的电路。虽然差动放大器也可用于此目的,但由于两个地之间的直流阻抗或共模电压等原因.限制了它的应用。该电路(见图)中包括一个双光电耦合器(MC-
Analog amplifiers can isolate their inputs and outputs by using optoelectronic components that are useful in most spacecraft electronic systems because they require that the signal ground be isolated from the power ground. Also, in common power regulation circuits The signal voltage needs to be switched from a circuit grounded to the supply voltage to a circuit grounded to the supply voltage. Although a differential amplifier can be used for this purpose, its application is limited due to dc resistance or common-mode voltage between the two grounds. This circuit (see picture) includes a dual opto-coupler (MC-