• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Filament Transformer for 26 DHT

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Hi ,
How about a cascade of transformers ? Something along the lines of :

primary:secondary-----primary:secondary------26
115:30-------------------------115:6

That should get you up and running , trim the voltage with series resistors if needed

cheers

316A
 
Wind your own; that's what I did. 1.5 vct is a pretty easy job. Get a 5 volt or 6.3 volt filament transformer, unwind the secondary while counting the turns to get the turns per volt ratio. Then multiply that by 1.5 to get how many turns are required for 1.5 volts. Divide by half to get ct.
I am in the process of building Kevin Kennedy's 26 preamp and I have never liked DC on DHT's. I could not find a 1.5vct transformer anywhere so I just wound my own. I made a dedicated winding for each 26 tube. Maybe the hum will be too much , I guess I'll find out!
Good luck, Daniel
 
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