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TL082: 输出截止问题

Part Number: TL082


此电路使用运放为TL082ID,输入点为①,输出为测试点②,电源电压+15.12V, -14.2V,测试点①处的输入波形为绿色波形,测试点②处的输出波形为紫色波形

运放TL082ID 批次①测试结果,测试点①处的输入波形为绿色波形,测试点②处的输出波形为紫色波形

运放TL082ID 批次②测试结果,测试点①处的输入波形为紫色波形,测试点②处的输出波形为绿色波形

为什么截止电压不同请问导致该现象的原因是什么?