We found this circuit for immobilizing a car's ignition system in the December 1976 Radio Electronics magazine. The circuit uses the courtesy light activation switches.
We found this circuit in an American documentation from the 60's. The transistors are made of...
Unlike white noise, pink noise has a spectrum whose amplitude decreases with frequency. This...
This transmitter for the 7 MHz range, as we can assume by the number of turns of the coil, since the...