TRIGATRON CV85 SPARK GAP 24B9, 1959

Enclosed spark gap.Three electrodes two for switching a high power high voltage and the third for triggering the device into conduction.
If the trigger is connected to a transformer producing a high voltage pulse, the gap between the two electrodes becomes Ionized, this forms a conducting area between the two electrodes and the device switches on, passing large currents and high voltages.
Used in pulsed Radar circuits. Specification:- 150KWatt 7.4 Kvolt 80 Ohms on resistance Frequency 2.5 Khz. Protected by a gauze sock, to contain the glass should the device shatter.

Your comments:

• The reason the valve has a protective honey comb like shell is to keep the valve from exploding because of the vacuum, and this valve is used in RAF OTH Radar magnetron radar systems
  .......... William Hendry-Prophet, London, 2nd of August 2011
  
  

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