I'm currently using a PWM circuit built from the schematic shown above. It works very well and does what exactly I wanted to do except for one thing, it does BUZZ since the circuit design is around 1.5KHz (very much audible range) with an adjustable duty cycle.
Can someone help me modify this circuit so that I could have around 62Hz, with still the same adjustable duty cycle (5%-96% minimum).
Thank you so much!
1. POT is 10K
2. Pin 3 (switch) is driving an N-Channel Mosfet (this is the one that's actually buzzing)
3. Suppy Voltage is 3 x 18650 series (12.6V on full charge)