Well I changed the frequency to inaudible range by forum member help. C3 was changed to 22nf. I have no means of measuring the exact frequency.
If I understood you right the speed will be controlled by measuring the polarity changes of motor armature?
The speed will be controlled by sensing the current thru the motor. The current goes up when the load goes up(motor slows down) The circuit will speed it back up.
Could you draw the required modifications on my attached circuit? I'm afraid I'm having difficulty following you
I can't simulate this as parts are missing from my simulator and don't wan to damage already working PWM controller.
Thank you.