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 sensor of this circuit consists of two 1N4148 diodes connected in series. The accuracy of the...
This setting appears elsewhere on this site. This was obtained from an 80's Circuit Encyclopedia and...
This circuit can be used as a direct optical link or by optical fibers. We found it in a...