This circuit was published in a recent magazine as a past project. It is a crystal radio from October 1986 Radio Electronics magazine. The article detailed the assembly.
We show an oscillator that produces rectangular TTL signals based on inverters. Inverters can also be...
This resistance meter uses a two-transistor oscillator as basic configuration. The tone produced...
This old circuit, from the 80's, uses an integrated circuit that is uncommon today. The circuit is...