This circuit cuts out ads between songs, based on the fact that the speech signal has small interruptions that can be detected. The circuit is from a Radio Electronics from April 1987.
With the coded activation of the relays, it is possible to control which of the 16 outputs...
The integrated circuit used in this application is not very common. Transistors and resistors...
This simple circuit makes use of neon lamps to indicate the voltage of a power grid. The lamps are...