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TSE II new build -Trafo question

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77seriesIII

Member
Joined 2007
Hi All,

TSEII on the way! many thanks George!

I am looking for some recommendations on main transformer. I want to try some rectifier tube rolling, switching around with 5AR4, Gz37, and 5391; i have these rectifiers on hand and been wanting to use the GZ37s for ages.

I live in Germany.

I want to push the 300b around 360 - 400v range. I have been playing around with PSUD

The Hammond 372HX is the lowest cost option for sure. To be fair, I have only ever used Hammond chokes but I know alot of folks here have used them for projects. So how are Hammond power transformers?

Custom option is Sowter. Right now I am not that interested in a toroid. I have used them in the past for st35 style builds and they are ok. If I am going to customize i can up the amps for both heater combinations - opening up other options in the rectifiers.

the Hammond has 300-0-300, will that get me to the desired 360-400hv on the 300b? If I customizing what would be the ideal primary winding for that? I am horrible with PSUD...

Many thanks

erick
 
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S

sunil

Member
Joined 2003
I use a locally sourced mains trafo, the company is an industrial manufacturer with good quality.

With 330-0-330 and GZ34 (Matsushita) I'm running at 375v and 70ma. With a 310 transformer I couldn't get above 350.

I found a big difference running them at 375v.
 
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