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原图是这样的。T3接成恒流源的形式,为T1提供静态工作点。T2为末级。请问R5 R6 R7有什么作用?是作为T1栅极的偏置,在无信号输入时保证栅极接地?那运放输出电压又是怎样的?运放是否为直流和低频信号的通路? |
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原图是这样的。T3接成恒流源的形式,为T1提供静态工作点。T2为末级。请问R5 R6 R7有什么作用?是作为T1栅极的偏置,在无信号输入时保证栅极接地?那运放输出电压又是怎样的?运放是否为直流和低频信号的通路? |
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