This simple electronic music box circuit was found in the April 1985 issue of Radio Electronics. The components are common, and the note adjustments are made with trimpots.
This circuit is from Mallory 1968 documentation. The circuit makes use of period components and...
This circuit can be applied to several logics. The circuit is from an Electronics Now from the...
In figures 1 and 2 we have two current drains that can be made with operational amplifiers and...