This simple circuit was found in an English magazine that no longer exists, January 1970 issue. It is the well-known speed game or who is the fastest. Transistors accept equivalents like the BC548 and the lamp is 20 to 50 mA.
This simple circuit was found in an English magazine that no longer exists, January 1970 issue. It is the well-known speed game or who is the fastest. Transistors accept equivalents like the BC548 and the lamp is 20 to 50 mA.
