This circuit was found in a 90s Radio Electronics. It is intended to amplify the sound channel of analog televisions of the time. The integrated circuit used is uncommon today.
This small earphone amplifier with germanium transistors was obtained in a Japanese publication from...
This powerful regulator, shown in the figure is for 5V (TTL) is suggested by Motorola and makes use...
We found this circuit in an English publication in 1991. The circuit can be assembled with...