basic experiments

Posted: 2/10/2019 7:50:37 PM

From: Berlin Germany

Joined: 4/27/2016

How to test the volume control circuit? I use a 555 timer with a double potentiometer to change the frequency of an asymmetrical square-wave generator. So I found the capacitors "in" and "out" of the voltage controlled attenuator to be to small. Replaced them by 3 µF non polar ones. 

A YT video shows the work in progress. It was a bit challenging to adjust the camera with my right hand and to do the rest with the left hand. So it's not for a movie award, but enjoy it anyway.

You must be logged in to post a reply. Please log in or register for a new account.