The capacitors on this circuit determine the frequency that this circuit can detect. We can adapt it to work as an interesting shield detector for logic signals.
This circuit appears several times in this section and on this site, obtained from different...
Found in the October 1972 issue of Radio Electronics magazine, this circuit generates modulated pulses....
This circuit was found in a 1974 English magazine. We can also assemble it using BC558 transistor for...