UTC Transformer connection reference document

[analog addict]

Saw a recent thread talking about UTC transformer connections and decided that if this isn't already somewhere on the forum, it might be useful for someone now and then.

Untitled by Analog Addict, on Flickr

Untitled by Analog Addict, on Flickr

Untitled by Analog Addict, on Flickr

 

[BinaryMike]

Thanks for posting. I could have really used this about a year ago, when I was trying to figure out the connections to an LS-34 with a lot of its markings rubbed off!

 

[Tom Bavis]

Another version, including schematics, on my page: http://www.audiophool.com/Misc/utc-term.djvu

 

[soundmotor]

Another version, including schematics, on my page: http://www.audiophool.com/Misc/utc-term.djvu

It's worth noting that pre-war UTC connections may be different than post-war ones. Some of the pre-war ones used terminals in rows rather than a circle.

IIRC not all of them connect the same even if if they are the same model. Best to check both early and late data.

 

[analog addict]

It's worth noting that pre-war UTC connections may be different than post-war ones. Some of the pre-war ones used terminals in rows rather than a circle.

IIRC not all of them connect the same even if if they are the same model. Best to check both early and late data.

Tom, you wanna comment on which is which? I can't see TB's link cause my new laptop doesn't have the djvu reader installed yet...

 

[soundmotor]

Tom, you wanna comment on which is which? I can't see TB's link cause my new laptop doesn't have the djvu reader installed yet...

Of the top of my head... unlikely.