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.
This audio-driven relay was published in the July 1977 issue of Radio Electronics magazine. The...
This circuit can be used for signaling a panel with a common incandescent lamp. The lamp will...
This crystal oscillator is indicated for the calibration of IF steps of common radio receivers. The...