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 1960s for Grundig. No IEA date code found. Weighs 3 lbs 5 oz. Bolt spacings 98 mm by 75 mm. Quantity sometimes available - please enquire.
Originally provided B+ and heater supply for these tubes: ECC83, EL95, ELL80, 2 EF86, EM84, 2 ECC81
Here are the verified connections for this transformer:
Input: 117V
Outputs:
250 VAC
6.3 VAC
Two total 6.3 VAC outputs!
HV (marked) is fused at 160 mA. Primary is screw 1 and screw 6 in USA.
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-053.
| Listed | 4 years ago |
|---|---|
| Condition | Very Good (Used) Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.Learn more |
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