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#1
20th April 2007, 07:35 PM
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Output transformer wiring
Hi-i now have some better (i hope !
 ) output transformers to try on "el cheapo" the 832 PP amp and i just need to check the wiring. They seem to be ex WAD stock and are numbered as TRANS-200 8K ohm CT and dated 04/98 The 3 upper tags i take to be centre HT and outers to anodes and the bottom 3 tags not sure. One is common and then 3 ohm and 6 ohm. The LH tag i guess as common but how to measure the other two to see which is 3 or 6 ? Philip
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Philip. Everything in this post is my honest opinion based on what i thought I knew at that very moment in time.
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#2
20th April 2007, 07:43 PM
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Re: Output transformer wiring
Measuring the DC resistance might give a good enough hint. Other than that, you need to inject some AC into the primary (or secondary, you choose) and see what comes out.
__________________
Just about everything I say has been in public use since the 1940's so no one owns the copyright on that. If by any chance its not prior art, then the copyright is retained by me.
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#3
20th April 2007, 07:51 PM
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Re: Output transformer wiring
Yes, if they're like the 300bpp ones (they're from the similar era) then the end tag will be 0 and the next 2 in logical 3 and 6 (or 4 and 8) progression. Putting a meter on 0 and finding the lower of the 2 resistances to the other tags should give you the 3 (or 4). You'll only be looking at fractions of an ohm though so a decent dmm.
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#4
20th April 2007, 07:57 PM
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Re: Output transformer wiring
Hi-thanks Gents for confirmation of my assumptions.
Just need to try and squeeze them in now ! Philip
__________________
Philip. Everything in this post is my honest opinion based on what i thought I knew at that very moment in time.
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