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采用运放OPA2333搭的正反馈电路实现短路保护及钳位

Other Parts Discussed in Thread: TINA-TI, OPA277, OPA2333

运放正反馈测试.TSC实际电路,一上电就是短路保护状态即输出为高。通过手工将正相输入端接地,使输出翻转为低。过一会就会翻转为高。理论上正反馈电路应该有两个稳态,怎么输出老是翻转到高。

用TINA-TI模拟,会出现负反馈的状态,即正相输入端与反相输入端电压相同的状态。如图。模拟这个出错是模型问题么?