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这种限幅电路能限制高性能的1微安电流源的输出电压,而不会引入不能接受的漏电流,因为漏电流会影响电流源的工作。这种限幅器主要用于深冷装置中的锗电阻温度计电路。普通限幅电路的漏电流限制了它在负载小电流
This limiting circuit limits the output voltage of a high-performance 1-μA current source without introducing unacceptable leakage currents, which can affect current-source operation. This limiter is mainly used in cryogenic device germanium resistance thermometer circuit. The leakage current of a normal limiter circuit limits it at a small load current