The toroidal core was excited by sharp pulse current. The sensor circuit is composed of peak value detector, Butterworth low-pass filter and differential amplifier.
磁芯采用高频脉冲电流励磁，信号处理电路由峰值检波、低通滤波及差动电路构成。
2
The microwave circuit unit is composed of microwave signal resource, low noise amplifier and microwave detector.
测量系统采用了微波信号源、低噪声放大器和微波检波器等组成微波电路单元。
3
The noise of an optical receiver consisting of a surface emitting laser amplifier and a detector is enhanced by any lack of gain uniformity.