Hi. I'm trying to make a simple tremolo effect for a guitar by using a square wave oscillator to 'wobble' the gain of an amplifier that the guitar's signal passes through.
I'm using a 555 timer to produce the square wave which then goes into a homemade optoisolator (LED, LDR, and black tape). This is then connected to pins 1 and 8 of an LM386 to wobble the gain.
The guitar goes into the LM386 and then out into a separate guitar amp.
This does give the tremolo effect I wanted but my problem is that there is a clicking sound from my guitar amp in time with the oscillations. What's causing the clicks and how do I get rid of them?
I've attached a diagram of my circuit.
Cheers.
I'm using a 555 timer to produce the square wave which then goes into a homemade optoisolator (LED, LDR, and black tape). This is then connected to pins 1 and 8 of an LM386 to wobble the gain.
The guitar goes into the LM386 and then out into a separate guitar amp.
This does give the tremolo effect I wanted but my problem is that there is a clicking sound from my guitar amp in time with the oscillations. What's causing the clicks and how do I get rid of them?
I've attached a diagram of my circuit.
Cheers.
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