I did not see any power supply bypass capacitor in your circuit. I woul install that before going any further.

 

Ok so did you try a bipolar instead of mosfet yet? The circuits end up more stable.

Hi! I haven't tried using bipolar, I don't have much experience with them, also the plan was to use the transistors at around 120V so finding such high voltage bjts would be difficult i believe.

 

I did not see any power supply bypass capacitor in your circuit. I woul install that before going any further.

hi! my power supply is through a boost converter which does have output capacitors (I haven't mentioned that in my schematic, my bad), also i checked the power supply output during operation, it stays stable

 

Maybe the input should be a shielded audio cable and the shield will prevent the input from picking up the output and prevent other interference.

I'll try it if I can find them, thanks!

 

Power supply bypass capacitors must be at the circuit so that there is no inductance in connecting wires.

 

Like said - right near the chips, and high quality ceramic capacitors, not just large electrolytic capacitors.

 

Like said - right near the chips, and high quality ceramic capacitors, not just large electrolytic capacitors.

i'll try that thank you!

 

Like said - right near the chips, and high quality ceramic capacitors, not just large electrolytic capacitors.

Im surprised nobody suggested that before this