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 found this basic oscillator configuration with two operational in Motorola's 1978...
The purpose of this circuit is to keep the soldering iron at a constant temperature, thus saving...
The L coil of this receiver determines the received waveband. The circuit is from a 1963...