This circuit was found in February 1976, Radio Electronics magazine. The circuit is powered by 12 V and consists of an intermittently triggered timer.
This circuit was found in a 2002 publication. It is a circuit that indicates when an extension is being...
This preamplifier for magnetic cartridges was found in the February 1990 issue of Radio...
The integrated audio amplifier used in this project is not very common today, but more modern...