Vacuum switch trigger delay characteristics
Measurements have been conducted to determine the turnon times of a triggered vacuum gap as a function of main gap voltage and trigger and main gap polarities. The triggered vacuum gap consisted of a pair of molybdenum electrodes mounted in a low-inductance (20 nH) stainless-steel chamber. Triggering was accomplished by supplying a 10-kV pulse from a charged 12.5-..cap omega.. cable circuit to a tungsten trigger pin protruding through one electrode. The main gap voltage was supplied by a 4-..cap omega.. charged cable circuit. Minimum wait times (the time from application of the trigger pulse to the beginning of main gap voltage collapse) of 50 ns were observed when a negative pulse was applied to the trigger located in the cathode. A minimum value of voltage collapse time of 10 ns was observed when a positive pulse was applied to the anode located trigger. The switch could be triggered for all main gap voltages in the range 50 V-75 kV, with minimum delay times occurring at 500 V.
- Research Organization:
- College of Engineering, University of South Carolina, Columbia, SC 29208
- OSTI ID:
- 5942027
- Journal Information:
- IEEE Trans. Plasma Sci.; (United States), Vol. 10:4
- Country of Publication:
- United States
- Language:
- English
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