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.
The great advantage of the circuit shown in the figure is the fact that its frequency is...
This power supply provides a12 V stabilized output. The transistor must be provided with a good...
Found in an American publication from 1968, this circuit can be made based on a TIP42 that must be...