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Filament voltage

I reduced filament voltage by using thinner and longer wires from filament transformer. This #22 wire can handle temperatures over 200C, and it's just slightly warm.

Length of each wire is about 41-42 cm.

Filament voltage is 4.82V with 240V in primary circuit.

Original #14 wires I used for Step-Start mod.

 

 

 

 

 
 

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by Ed Kulchenko, VE3FWA, 2005-06