To suppress the interference from the earth potential by using single-end grounding and connecting a high-frequency transformer in the videosignal transmission circuit and to develop a video isolated equalization amplifier. 采用单端接地法、在视频信号传输回路中接入一只高频变压器抑制地电位干扰,研制了视频隔离均衡放大器。
A measurement amplifier circuit is designed, which consists of circuits of differential amplifier, a common-mode rejection, double-end and single-end conversions and programmed gain amplifier. 设计了一个测量放大器电路,它由差动放大电路、共模抑制电路、双端单端转换电路和程控增益放大电路组成。
The three key circuits, single-end switch to double-ende Amplifier, Mixer, and Low-pass Filter are designed and simulated. 本文对单端转双端放大器,混频器,低通滤波器三个关键电路进行了设计和仿真。