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 Post subject: Radiola 82 interstage transformer open
PostPosted: Mar Fri 23, 2018 12:05 am 
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Joined: Dec Sat 18, 2010 3:10 pm
Posts: 20
Location: Richmond, ky
One side of the transformer feeding the 45 tubes is open. I can give it a signal thru a capacitor but I need that 180 degree phase shift the transformer gives. No way to repair or replace the transformer. Anyone know any tricks to feed that 45 grid out of phase as the transformer would. I get good volumn...just a bit distorted. Any help appreciated.


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 Post subject: Re: Radiola 82 interstage transformer open
PostPosted: Mar Fri 23, 2018 12:08 am 
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Joined: Feb Wed 07, 2018 6:52 pm
Posts: 326
Location: Stone Mountain, GA
If the primary is open, you can feed to one side of the secondary with a capacitor.

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 Post subject: Re: Radiola 82 interstage transformer open
PostPosted: Mar Fri 23, 2018 12:25 am 
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Joined: Dec Sat 18, 2010 3:10 pm
Posts: 20
Location: Richmond, ky
Thanks for the help. The primary is fine. The secondary is center tapped feeding two 45 tubes. The secondary is the side with the open.


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 Post subject: Re: Radiola 82 interstage transformer open
PostPosted: Mar Fri 23, 2018 12:45 am 
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Joined: Jul Mon 26, 2010 8:30 pm
Posts: 23368
Location: Annapolis, MD
There is no good solution that does not require another active device---and that will wind up being a kludge.....much better to replace the transformer.

AES has several good choices---this one being the cheapest:
https://www.tubesandmore.com/products/t ... tage-10-ma

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 Post subject: Re: Radiola 82 interstage transformer open
PostPosted: Mar Fri 23, 2018 1:28 am 
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Joined: Dec Sat 18, 2010 3:10 pm
Posts: 20
Location: Richmond, ky
Great info and thank you. I will order the transformer. I surely don't want a kludge in my radio !!!!!!!!!!!!!!


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