Found in an old publication about neon lamps this circuit works directly connected to the power grid, serving as an indicator for various situations. Ordinary neon lamps can be used.
Found in Popular Electronics from the 90s, this generator uses integrated circuits from that time....
This small tone generator was found in the November 1987 issue of Radio Electronics magazine. The...
This circuit generates a ladder signal to display on an oscilloscope the family of curves for...