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.
This different power control circuit with SCR was obtained from a 1967 magazine. The SCR can be...
Found in EEE documentation, this circuit can have the duration and frequency adjusted separately....
This circuit is from a 1977 documentation. It is powered by the power supply of the circuit under...