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UTC CG-Series Terminal Arrangements c.1956

UTC’s “CG” ‘commercial grade’ line of transformers were high-quality sealed units made in the 50s and 60s and possibly later. The later ‘red paint’ iterations often have pinout data printed on the cases, but the earlier ‘metal-badge’ versions sometimes do not. Despite the wealth of vintage UTC transformer data already available online, I could not find this particular document on the internet so I have scanned it for y’all. This particular document has a March 1956 date code so i assume that it covers the line at-that-point.

CNTRL-CLICK TO DOWNLOAD 4PP PDF:

Units covered include output transformers CG-2L6, 4L6, 15, 16, 19, 710; power transformers CG-422, 428, 429, 431; bias units CG-315, 316; low-level audio units CG-131, 132, 133, 134, 135, 136, 1347, 140, 141, 233, 235, 333, 433; and power transformers CG33, CG120, CG122, CH124, CG125, CG126, CG300, CG301, CG302, CG303, CG34.

Above: some examples of the varying CG case styles- both with and without pinout data. The terminal board on bottom generally have some data but it is often incomplete.
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  • I visit your site often because of all the 'goodies'. Thank you for that.

    The link in this article is not working.

    Greetings,
    Robert

    • Hello Robert. you are welcome. Regarding the link: i just tried the link and it works as indicated. As I state, control-click on the image in order to download the PDF. I just tried it literally 30 seconds ago and it works fine. CR

    • Hi william. yea i only have a mac, and the site works fine on macs, but i can;t say RE: PCs. This site is built on wordpress, which is not well-supported any longer. I would probably have to pay 1000s to a developer to fix it at this point.

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