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82问答网 > 运放单电源和双电源工作有什么区别？

运放单电源和双电源工作有什么区别？

2025-03-15 04:31:20

推荐回答（1个）

回答1：

单电源运放基本都是输入输出有轨到轨能力，即输入电压范围0—Vcc，输出电压范围0—Vcc，当然到轨之间有20mV左右的误差。
双电源运放输入和输出基本都没有轨到轨能力，输入电压范围距轨2—4V，输出电压范围距轨2—3V。
两种运放都是甲乙类推挽输出放大器，单电源运放内部一般只能使用MOSFET，双电源运放BJT、MOSFET、JFET都可以用。

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