Found in a 1965 Motorola documentation, this circuit uses a neon lamp as a trigger element. The SCR admits equivalents and the lamp must be incandescent.
We found this circuit in a 1987 Hands On Electronics. It was indicated at the time to power...
We found this circuit in a Popular Electronics of the 80's. The circuit can be used to drive...
September 2016 - It can be purchased from Mouser Electronics the new ultraviolet high power LEDs...