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50w gong pin fang da qi
Author(s): 
Pages: 8
Year: Issue:  7
Journal: Electric Age

Abstract: <正> 图示一个使用功率场效应管的音频放大器,整个放大器由两级差分放大器和一级功率场效应管功放级组成。为了避免电容对音质的影响,各放大级之间采用直接耦合。如图所示,BG1、BG2组成第一差分放大器,该级除了对信号进行放大,还能自动调整电路工作点。同时补偿温度变化对电路工作状态的影响。该级静态工作电流为1mA(每管集电极电流为0.5mA)。BG3
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