Hello, I need to sum an AC and DC signal in the order of milivolts, at most 1 V. To do this, I built a non-inverting summing amplifier circuit as in this diagram.
I tried various resistances with values 10k, 100k and 1000k, keeping all of them equal in the circuit. Although the output signal is correct, it remains for a few seconds; the amplitude of the wave decays quickly. What may be the cause of this? Could it be related to the op-amp? I tried a few types of op-amps. The result didn't change much. Thanks
I tried various resistances with values 10k, 100k and 1000k, keeping all of them equal in the circuit. Although the output signal is correct, it remains for a few seconds; the amplitude of the wave decays quickly. What may be the cause of this? Could it be related to the op-amp? I tried a few types of op-amps. The result didn't change much. Thanks