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 circuit can gerenate square signals and be comanded by na external control. When the input...
This circuit is from an American 1967 documentation and can be implemented with modern equivalent...
This circuit was found in 1968 General Electric documentation. The circuit uses components from the era...