Hi!
I´m using a LM321 as buffer.
Power Supply range is 12v - 0v. Vout does not match with Vin+. Vout is more smaller.
Thanks!
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Hi!
I´m using a LM321 as buffer.
Power Supply range is 12v - 0v. Vout does not match with Vin+. Vout is more smaller.
Thanks!
Javier,
The unity gain amplifier is the most simple amplifier setup. However valid input and output ranges give good results. This is not the problem here, so I suggest using an oscilloscope to check op amp input and output pins. Input should be DC with too much ripple if input is 330 Hz PWM. Output should follow input.
I built a LM321 unity gain amp setup and tested with DC sweep from -1V to 15V (-1V is not allowed, but I did it anyway).
Hi Ron.
I think that the problem is brought about a ripple in the analogic signal, because I used this circuit with DC input and the Vout in LM321 is Vin+0.11v.
Is my teory correct?
Regards.
Ron,
Thanks for your help.
Finally, the problem is due to the ripple of the signal.
Regards.