Thread: Eric Dollard
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Old 12-05-2012, 05:53 PM
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madhatter madhatter is offline
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Originally Posted by GSM View Post
Hi Smokey,

Surely thoriated tungsten filament tubes were available to Moray, and I would not be surprised if his work with same led to them being replaced by supposedly more efficient and much larger indirectly heated cathode types ?

Would this not be why he had them reverse connected - to accelerate charge from anode to cathode, and then collect electrons bombarded out of the thorium in the filament via grid potential oscillating circuitry ?
This method generates little excess power, hence many needed; it also generates radiation from the thorium !

What was the OA4G cathode material ?

Cheers .......... Graham.
according to the RCA internal book I have the cathodes were a barium carbonate oxide coating or barium-strontium on nickle.
filaments are thoriated tungsten.
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