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Triggered Spark Gap

Triggered Spark Gap

Triggered Spark Gap
Photos © Andy Cowley, M1EBV, 2005
Found by Andy (ca. 2005) in a box of old valves at Holsworty amateur radio rally
Tube is 6" high, 1.25" diam.
Standard ES base, 2 BA screw terminal on trigger electrode.
No markings except for "20 AMP." on the base.

Triggered Spark Gap inscription
Triggered spark gaps are used as high-voltage, high-current switches. A high voltage pulse is applied to the trigger electrode to initiate a glow discharge. This provides a current path for the formation of an arc discharge betwee the two main electrodes. The tube resistance then drops from open-circuit to a few mΩ.

See also. Mike's Electric Stuff / Spark Gaps.



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© D. W. Knight, 2013
© Andy Cowley 2005