Abstract
The switching time and the minimum firing voltage of a triggered vacuum gap employing a trigger electrode in the cathode and anode( double triggered vacuum gap ) were measured. The double triggered vacuum gap was operating below 100V independent of the high voltage main electrode polarity ( positive or negative). This minimum firing voltage is lower than that of the conventional triggered vacuum gap. The switching time is about 0.5 μs in the range 3 to 18kV.
The conventional triggered vacuum gap has a trigger electrode which is placed at the center of the grounded main electrode. The polarity of the main electrode affected the switching time characteristics. We added a trigger electrode to the high voltage main electrode. The double triggered vacuum gap was scarcely influenced by the polarity of the high voltage main electrode when both main electrodes were triggered at the same time.
