Hi,
Oh you meant the LM358? Yes that has no null inputs. We could look at ways around this i guess. Is that really a great concern right now?
The spike you were seeing is apparently due to the start up time of the LM358, at least for the model.
When op amps go out of the linear mode they sometimes take a little time to get back into the linear mode, longer than usual, because of the slew rate and any internal capacitance. During startup this shows up mostly in the first op amp, which takes time to reach normal linear mode operation as it's output starts to deliver current to the 10k resistor.
Oh you meant the LM358? Yes that has no null inputs. We could look at ways around this i guess. Is that really a great concern right now?
The spike you were seeing is apparently due to the start up time of the LM358, at least for the model.
When op amps go out of the linear mode they sometimes take a little time to get back into the linear mode, longer than usual, because of the slew rate and any internal capacitance. During startup this shows up mostly in the first op amp, which takes time to reach normal linear mode operation as it's output starts to deliver current to the 10k resistor.