Thomas Anderson
New Member
I have this test circuit, which has this signal:
V1 may change from 1 to 30 V, V2 may change from 0 to 4 V peak to peak.
I need to clip the signal at about 3 - 4 V to feed it to an Op Amp, which has a split supply voltage of about -5 and +5 V.
So I added two zener diodes and the signal was clipped:
But it was not fast enough, for about 300 microseconds the signal was still above 5 V - the Op Amp power supply voltage, which, I figure, may damage the Op Amp:
How can I clip the voltage faster, without distorting the signal that is below 3 - 4 volts?
![eac034cc7716b2cd7330a.png](https://telegra.ph/file/eac034cc7716b2cd7330a.png)
V1 may change from 1 to 30 V, V2 may change from 0 to 4 V peak to peak.
I need to clip the signal at about 3 - 4 V to feed it to an Op Amp, which has a split supply voltage of about -5 and +5 V.
So I added two zener diodes and the signal was clipped:
![34267eb4bb721245a203c.png](https://telegra.ph/file/34267eb4bb721245a203c.png)
But it was not fast enough, for about 300 microseconds the signal was still above 5 V - the Op Amp power supply voltage, which, I figure, may damage the Op Amp:
![79f77c7525131a89584fa.png](https://telegra.ph/file/79f77c7525131a89584fa.png)
How can I clip the voltage faster, without distorting the signal that is below 3 - 4 volts?