Over the years, he designed an entire family of preamplifiers and amplifiers.
多年来，他设计了一个前置放大器和放大器的整个家庭。
This paper discussed the circuit model of a electret microphone and the conventional microphone preamplifiers.
分析了驻极体传声器的电路模型及其传统的前置放大电路。
This paper discussed the circuit model of a electret microphone and the conventional microphone preamplifiers.
分析了驻极体传声器的电路模型及其传统的前置放大电路。
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