一种可变增益AC放大器被连到检波器电路，用于将检波器输出放大。
A variable gain AC amplifier is coupled to the detector circuit for amplifying the detector output.
若将他励直流电动机输出功率的机理等效为一个与电动机电枢绕组并联的可变电阻，可以得到他励直流电动机可变电阻型等效电路图。
The output power mechanism of a separately excited DC motor can be equivalent to a variable resistance, which is parallel with the armature winding of the motor.
本文设计了一个阻抗可变的输出驱动器，并配套地设计了自适应的阻抗控制电路，能在电路工作中实时调节输出阻抗。
This paper describes the design of a variable impedance output buffer, and its adaptive control circuit. It can automatically adjust the impedance of output buffer in real-time.
本文设计了一个阻抗可变的输出驱动器，并配套地设计了自适应的阻抗控制电路，能在电路工作中实时调节输出阻抗。
This paper describes the design of a variable impedance output buffer, and its adaptive control circuit. It can automatically adjust the impedance of output buffer in real-time.
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