BTC 5223 Voltage Stabilizer Vintage Power Transformer Tested 110 / 6.3 V Tube Amp Project 1950s
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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 1950s by BTC. No IEA date code found. Weighs 3 lbs 8 oz. Bolt spacings 58 mm by 47 mm. Quantity sometimes available - please enquire.
Here are the verified connections for this transformer:
Input: 117V
Outputs:
110 VAC
6.3 VAC
Two total 6.3 VAC outputs!
Potted!
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 use as an isolation transformer or tubes with series heaters, purple 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-048.
| Listed | 4 years ago |
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| Condition | Good (Used) Good condition items function properly but may exhibit some wear and tear.Learn more |
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