Hammond PWDP13115 220 VCT Power Transformer for Collins 75S-1/75S-3

The PWDP13115 is a Peter W. Dahl power transformer for the Collins 75S-1, 75S-3 and 75S-3A receivers, listed against Collins P/N 662-0301-00. It is the T-4 in the 75S-1 and the T-8 in the 75S-3 and 75S-3A.

It supplies two secondaries: S1 at 220 VCT @ 0.1A CCS and S2 at 6.3 VAC @ 6.0A CCS. The 117 VAC primary is rated 50/60 Hz single phase, which makes it usable where 50 Hz mains are supplied at that voltage.

The unit is built on an EI-112 X 1.5 lamination core in Style 4 and weighs approximately 4 lbs.

The part is listed as RoHS compliant and REACH compliant, with UNSPSC 39121301 and UPC 623980930480. Shipping weight is 4 lbs (1.81 kg).

The PWDP13115 is listed in the PWDAHL Series of transformers and chokes taken directly from the Peter W. Dahl files, a range described as magnetics for amateur radio products. These transformers are usually built to order one at a time, and because many of the designs are decades old it is always best to confirm availability by phone or e-mail before planning a repair around it. Units that have already been built are shown with Hammond part numbers, as this one is, and stock units can usually be shipped the next business day.