We found this circuit in a Popular Electronics from the 90s. It operates at a frequency of 15 kHz. Components can be difficult to obtain, such as the integrated circuit.
This circuit was found in the December 1992 issue of Radio Electronics magazine. The current is a...
This trigger uses two switching transistors that can still be found with some ease. The circuit is from...
This filter is inserted between the interfering device and the interfering device. The coils are...