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 is from an Electronics World of 1964. The circuit can be made with modern...
We find this circuit in a Radio Electronics of July 1984. It consists of the traditional version of 1 A...
This circuit was found in the June 1990 issue of Radio Electronics magazine. The maximum current is 1...