This circuit appeared in Radio Elecronics magazine in 1968. The operating circuit is a general-purpose type at the time and the power supply must be symmetrical.
The integrated circuit used in this application is not very common. The circuit is intended for...
This code practice oscillator was found in an English publication from the 80's. The circuit can...
This circuit was found in a Radio Electronics from June 1966. The transistor is from the time. The...