This circuit is from a 1968 documentation using one of the first integrated circuits available at the time, the TAA370. The circuit is powered by 1.3 V using a 200 ohm handset.
The purpose of this circuit is to compare transistor gains in order to obtain matched pairs that...
This sound effect circuit was found in a 1987 publication. It is a circuit that drives a set of...
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...