This circuit was found in a Motorola Manual of 1965. The circuit has neon lamps as trigger elements. Equivalent SCRs can be used.
P1 on this Radio Shack circuit is a 6 V lamp with current up to 500 mA depending on Q2. The...
November 2016 - The TL3780 ultra-miniature E-switch touch switches can now be obtained from Mouser...
This digital indicator circuit was found in the June 1988 issue of Radio Electronics magazine. The circuit...