This diagram from a 1967 documentation shows how to switch high voltage neon lamps with 5V TTL outputs. The circuit can be adapted to function as a shield.
This circuit can generate signals in the VHF range and can be used as the basis for small...
This source was obtained from a former publication for valves but also serves for powering common...
This circuit draws one of the three possible guesses of a sports lottery logo: column 1, 2 or the...