What is the proper name for the three terminal encapsulated discharge device that has the HV terminal, the ground terminal and the terminal for the injected ignition arc to force the HV terminal to arc over to the Ground terminal..
The last one I saw was round transparent glass bubble with the main ends on it and the ignition probe off the side close to the ground end.
These units are used for very high voltage discharges using a smaller ignition arc as the switch.
Thanks.