How to reduce signal noise in a circuit (for Amplifier)?
Used this schematic for LM386
Once I hooked up 3 Constant current regulators with 3x 3 watt LEDs(red-green-blue) through 3x MOSFETS, the Amp's output signal becomes blurry/chaotic and the light malfunctions. The regulators negative output must be connected to logic GND, which i know to be where the interference is coming from.
How can I reduce the noise coming out of the Amp? Even if I gotta use different type of Amp. I don't know to much about them.