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HIVAC TRIGGER TUBE, 1950's

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HIVAC TRIGGER TUBE, 1950's

Device triggers like a neon at certain predetermined voltage , The trigger tube other wise known as a cold cathode tube fires or triggers when the voltage across is high enough. Can only be extinguished by lowering or removing the voltage.
Unlike normal valves there is no heater required hence the term cold cathode.

Used in oscillator circuits.

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