实时警报通知:微信告警通知的重要性解析
667
2022-12-14
利用空闲运放产生稳定的负电源 Spare Op Amp Ge
VOP1+ = VOP1-VOP1+ = 0V
Using Superposition:
VOP1-' = VP(R3/(R3+R1)VOP1-'' = (VN(R1/(R1+R3)VOP1- = VOP1-' + VOP1-''VOP1- = VP(R3/(R3+R1)) + VN(R1/(R1+R3))VN = -VP(R3/(R3+R1))((R1+R3)/R1)
Therefore:
VN = -VP(R3/R1)
Alternatively:
IR1 = VP/R1
Therefore:
VN = -IR1 × R3 = (-VP/R1)R3
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