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Re: [TCML] graphite



douglas,

From an electrical point of view, it probably conducts well enough, but from a thermal point, it does not.

A major property of a well performing gap is that it stays cool, so that the air between the electrodes can return from conducting plasma to an isolating state quickly. A process referred to as quenching.

The surface of the graphite will get red hot and tend to keep the arc from extinguishing. This property of graphite was a major reason for choosing it as material for electrodes in arc-lamps.

Stick with copper, nice big slabs of copper make superior gaps.

Cheers, Finn Hammer
i was wondering , i know for spark gaps tungsten seems to be the material of choice
but is there a reason for not useing graphite?
i suspect its not a good enough condutor but not sure
could i get your opinions please
   thanks


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