介绍一种利用占空比与PWM电路补偿端电压之间的关系，设计的以差动电压放大器为核心构成的占空比测量电路；它能以数字显示形式直接给出脉冲电源输出电压的占空比。
A duty ratio measuring circuit, which using differential voltage amplifier as core component, was designed utilizing the relationship between the duty ratio and the compensatory terminal of PWM IC.
其它特性包括：集成缓冲用来驱动基准电压，以及集成完全差动放大器用来缓冲调制器输入并进行电平转换。
Other features include an integrated buffer to drive the reference as well as a fully differential amplifier to buffer and level shift the input to the modulator.
介绍了差动变压器式传感器的结构和输出特性，详细分析了其零残电压产生的原因，以及对测量系统非线性和灵敏度的影响。
The producing reason of residual voltage at zero point and its affection to the nonlinear quality and sensitivity of measurement system were analyzed extensively.
该电路应用两级差动放大增加电路增益，利用源极跟随器作为电压缓冲器以减少信号电平损失。
It uses tow-stage differential amplifiuers to increasee the circuit gain and uses a source follower as a voltage buffer to decrease signal volt- age losing.
设计了一种低电压全差动增益增强CMOS运算跨导放大器。
A low voltage fully differential gain-boosted CMOS operational transconductance amplifier is designed.
对两种极化电压下的横联差动电流方向保护的选择元件在同杆并架双回线故障下的动作行为进行了研究。
This paper analyses selectors of transverse differential current direction protection using two types polarizing voltage for double circuit lines on the same tower.
在测量差动热电偶的输出时，也可以采用同样的方法来消除偏置电压。
This same technique is used to cancel offsets when measuring the output of differential thermocouples.
特高压长线路可能在线路中间接入并联电抗器，从而有效补偿线路电容电流，抑制空载线路过电压。提出了在特高压长线路中间带并联电抗器时的线路分相电流差动保护原理。
Shunt reactor could be installed in the middle segment of the UHV transmission line, in order to compensate capacitive current of transmission line and limit over-voltage of line without load.
特高压长线路可能在线路中间接入并联电抗器，从而有效补偿线路电容电流，抑制空载线路过电压。提出了在特高压长线路中间带并联电抗器时的线路分相电流差动保护原理。
Shunt reactor could be installed in the middle segment of the UHV transmission line, in order to compensate capacitive current of transmission line and limit over-voltage of line without load.
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