New York Transformer Analab DWG 171100001 Transformer 170 V Vintage Power Custom voltages! Tested HUGE 12 lb Tube Amp Project 1960

Fully 60 Hz AC tested and guaranteed vintage tube preamp transformer. AC testing using an oscilloscope allows us to find and reject transformers with noisy outputs, which a simple resistance or continuity test will not reveal. Made in USA in 1960 by New York Transformer. IEA date code 366036. Weighs 12 lbs 5 oz. Bolt spacings 96 mm by 76 mm. Quantity sometimes available - please enquire.

Here are the verified connections for this transformer:

Input: 117V

Outputs:
170 VAC

Pins 13-18 is 117V in. Heavy insulated orange pair is 10VAC. 14-15 is 9VAC, 22-23 is 10VAC, 16-17 is 130VAC, 24-26 is 60VAC with a CT at pin 25, 27-28 is 170VAC. No other connections discerned.

We use a standardized wire identification scheme featuring bright cable ties. In case of any ambiguity, 117V input will be wrapped with a black cable tie, red is high-voltage, yellow is 5V for rectifier, green is 6.3V, blue is 12.6V, white is 117V out for 220V input or tubes with series heaters, purple or grey is a second (or third!) 6.3V output. The voltages run a bit higher when run at modern AC levels instead of the 117 VAC that was specified in the 1950s and 1960s. Serial number T-1081.