We found this circuit in the November 1992 Radio Electronics magazine. The circuit uses an LDR as a sensor and the transistor can be any general-purpose transistor.
Found in a 1965 Electronic Design, this circuit produces a signal with the waveform shown in the...
This is a circuit that should not be used for readers interested in a fair game. The circuit...
This circuit receives the signals from the previous circuit (CB19055E) by activating an electric lock...