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 is another one of the many versions of this circuit that we have in this section. We found it in...
This 13.8 V transistorized power supply with a current capacity of 20 A has a protection system...
We found this circuit in a 1986 publication. However, as it is based entirely on 555 integrated...