[Amps] Toroidal transformers...

[Paul Decker]

Hi Bob, 



I was just looking at some interesting toroidal transformers and ran across this: 

http://www.toroid.com/standard_transformers/transformer_kits/transformer_kits.htm 





There is some information on losses on the page, but I didn't save that link, so you might need to search around for it.   

http://www.toroid.com/standard_transformers/auto_transformers/step_down_transformers.htm 



Paul (KG7HF) 





Date: Tue, 23 Jun 2009 17:49:37 +1000 
From: robert briggs <vk3zl at bigpond.com> 
Subject: [Amps] Toroidal transformers... 

Hi all..I have been shopping around for custom built Toroidal 
transformers....My specs are for  one rated 250 volts AC input 
50CPS....Output 1100VAC @ 1 amp....1100va....I intend to use this unit 
for voltage doubling to run a single GS-31B triode....I finally found an 
Australian firm who can supply a Toroidal transformer  rated at those 
specs...170*80 (Diameter Hight).. 

I am wondering what difference in efficiency there would be using the 
Toroidal unit in place of an EI cored transformer voltage doubled such 
as used in the Heathkit SB220 and other moderately rated amplifiers 
Dentron etc.. 

Bob.... 
VK3ZL.....