Attached is a screenshot of an amp I am running in Ltspice. There are spikes on all the currents and voltages displayed, can anybody tell me why?
Errata:Jony130 said:Crossover distortion are the cause of this spikes. Too low output stage quiescent current.
Try this circuit:
Yes, I notice this. And I reupload the corrected file.Baluncore said:Errata:
Q10, a PNP type QMPSA56 is cross labelled with itself.
Replace PNP text with QMPSA56
Replace text QMPSA56 with Q10
The collector currents in the mirror should be in phase. The collector currents in the differential pair should be out of phase. You must be careful how you specify and measure currents because currents can be reversed by reversing a component.ntetlow said:In the mirror circuit the collector currents of Q1 and Q2 are 180 degrees out of phase whereas in the advanced amp circuit they are not. Any ideas why?