提出一种自动量程切换电压测量系统的设计方法，该系统基于程控增益放大器器件，使用单片机控制其增益实现量程的自动切换。
It presents a system of voltage measurement with self-scale, based on the program control amplifier controlled by the single chip computer.
该晶闸管触发器采用集成运数放大器，移相触发脉冲的形成是根据三相交流电的各相与移相控制电压直接比较原理实现的。
The shift trigger pulse of the thyristor trigger circuit with integration amplifier is generated by comparing directly principle of three-phase AC and shift-phase control voltage.
不足二盎司的自重，新的放大器却能够提供了广泛的电源电压范围，从而能驱动和控制规模在13毫米到30毫米的无刷直流电动机。
Weighing in at under 2 oz, the new amplifier is able to provide a broad supply voltage range, which makes the driver capable of controlling the smaller 13mm BLDC motors to the larger 30mm motors.
这种运算放大器的增益电压控制，并可以通过P2电压变化调整。
The gain of this operational amplifier is voltage controlled and can be adjusted by voltage variation through P2.
仿真结果表明，改进控制电路后的系统不但解决了输出直流偏置问题，而且解决了电压补偿方法所造成的放大器增益下降问题。
The simulation results show that the amplifier of improved control circuit not only solve the question of output DC offset, but also keep the voltage gain lowered by voltage compensation technique.
该分布式电源系统采用高频母线形式，原边电路采用双管正激电路，电压前馈控制，后级利用磁放大器精确控制。
The primary circuit has the form of double switch forward of feedforward control, the second circuit used the magnetic amplifier as the post regulator.
实验与分析表明，高压直流放大器采用功率场效应管和电压闭环控制后，可拓展放大器通频带，提高放大器输出能力和长时间稳定性。
The experimental and analytical results demonstrate that wide bandwidth, high voltage output and long-time stability can be achieved with power MOSFETs and a closed-loop scheme.
可编程增益运算放大器的电压增益变化可以通过数字控制的开关电阻网络来实现。
The variation of voltage gain of the PGA can be realized by switched resistor-network, which is digitally controlled.
首先将整流直流电压的测量值与给定值进行比较并相减，再经过具有低通滤波功能的误差放大器后得到电压控制量。
First, rectified DC voltage are compared with the given value and subtraction, and then obtained voltage control value after get through a low-pass filtering and the error amplifier.
程控放大器能够把这样的信号变换成与测量或控制电路相匹配的输入电压。
Programmed amplifier is able to convert these signals into input voltage which match with testing circuits.
程控放大器能够把这样的信号变换成与测量或控制电路相匹配的输入电压。
Programmed amplifier is able to convert these signals into input voltage which match with testing circuits.
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