Tube Radio Forum - The friendliest radio forum on the net!
Would you like to react to this message? Create an account in a few clicks or log in to continue.

Isolation Transformation question

Go down

Isolation Transformation question Empty Isolation Transformation question

Post by henrymadison Fri Feb 19, 2021 4:44 pm

I've seen descriptions about making an isolation by using 2 identical transformers back to back, but I've seen transformers that have a primary of 115v and a secondary of 115v. It would seem that this is a better solution (Hammond 169 PS). Am I wrong?

henrymadison
New Member
New Member

Number of posts : 4
Age : 78
Registration date : 2020-04-24

Back to top Go down

Isolation Transformation question Empty Re: Isolation Transformation question

Post by AJ2X Fri Feb 19, 2021 10:04 pm

It's certainly simpler to use a single 1:1 transformer, but it's usually more expensive, since the transformer has to be able to handle the load you expect. 50 watt isolation transformers aren't too big or expensive, relatively, but that size will only handle fairly small (maybe 7 tubes) radios. If you expect to service larger (more tubes) radios, or TVs, then you'll need to handle at least a couple hundred watts. That gets expensive, and bulky. The back-to-back transformer idea is bulky too (each still has to handle the power) but sometimes used transformers can be acquired at scrap prices at hamfests or electronic flea markets.

AJ2X
Member
Member

Number of posts : 20
Age : 73
Registration date : 2018-09-11

Back to top Go down

Isolation Transformation question Empty Re: Isolation Transformation question

Post by henrymadison Sat Feb 20, 2021 2:32 pm

Thanks for the quick answer!

henrymadison
New Member
New Member

Number of posts : 4
Age : 78
Registration date : 2020-04-24

Back to top Go down

Isolation Transformation question Empty Re: Isolation Transformation question

Post by Sponsored content


Sponsored content


Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum