So im trying to create a PWM from a music signal depending on its amplitude. What i thought of was to controll the current through current mirrors which will cause the cap to charge/discharge faster/slower and so change the dutycycle of the orange mark.
But whenever i add a bjt or sth else in series with the 1k resistors it comes up with the cfs.
Is there any chance this basic idea could ever work?
If it works it would need to be rather high frequency to compansate for the changing current right?
Ignore the stuff at the top. That was just me trying to split the input so i could controll the current mirrors individually.
