Found in a 1965 Electronic Design, this circuit can be made with modern equivalent transistors. The capacitor basically determines time.
Found in a 1965 Electronic Design, this circuit can be made with modern equivalent transistors. The...
This circuit for alternating current was found in a 1965 General Electric documentation. The...
This metal detector was found in a 2001 Poptronics, but it can still be easily assembled, as the...