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这种放大器(其线路图见下图)适用于要求放大弱信号并得到良好信/噪比的场合,例如用话筒给磁带录音或者用在通用混频控制台等。按每1伏输出电压换算的信/噪比不超过78分贝,而且信号源
This amplifier (the circuit diagram shown below) is suitable for applications requiring amplification of weak signals with good signal / noise ratio, such as tape recording on a microphone or universal mixing console. According to each 1-volt output voltage conversion signal / noise ratio does not exceed 78 dB, and the signal source