1184 quad mixer vca (AKA 1183)

[analogoutput]

Try this:

Need some help with the kosmo vco w/ tuner. Please! I’ve lost weeks

I think you should find out which parts of the circuit are working and which are not. And I agree with @analogoutput that you should concentrate on the analog side of the circuit first. One way of tracing AC signals, if you do not have any specialised equipment like an oscilloscope, is to use an audio amplifier. It basically boils down to that you probe the circuit and listen whether you can hear a signal where you would expect one. This should work with an oscillator as all it will produce (mo…

Here’s a picture, the cap is smaller than what Jos was suggesting…