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Old 19th Oct 2004, 5:56 pm   #15
Radio_Dave
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Join Date: Jun 2004
Location: Norwich, Norfolk, UK.
Posts: 2,543
Default Re: Bush PB53 Output stage problems

Hi Ed,

I didn't use a train set transformer to replace the output transformer, I used the train set transformer's 16VAC output to find the impendance of a spare output tranny I had. It is the only AC output I have, apart from the obvious

I thaught about putting a resistor in parallel with the field coil but the Bush PB51 is a very simular circuit to the PB53 but it uses a PenA4 output valve (which is simular to my AC2/PenDD) it has a field coil of 2000ohms and it has a HT of 240v so I don't understand why mine only gets to 190V

Regards

David
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