We found this circuit in the October 1978 issue of Radio Electronics magazine. The magazine article describes its assembly. The circuit is a 6-digit circuit using components from the time.
We can use high value electrolytic capacitors in alternating current circuits with the...
This negative voltage source was found in a Popular Electronics from the 90's. The transformer has 120V...
Found in an old Popular Electronics, the sparker is driven by a motor being adapted to the...