I believe it's a power transformer for solid state audio, and I assume it's ISO-compliant, not from the Iso transformer company.
My Google-fu fails me on IDing this one.
Thanks!
Looks like a Sony part number. Has to be old, not sure if 62 is the date code but the label style would seem to suggest 1960s / early 1970s or so to me. Could be quite oddball by modern standards.
Measure the resistance of the windings with a multimeter (find a connection). Apply a low voltage to the winding with a small resistance (AC = 5-6v). Measure the voltage across the remaining windings. This way you will get an idea of this transformer. In Japan, the mains voltage is 100V (AC).
It may not be a power transformer, but an interstage or output transformer.
It may not be a power transformer, but an interstage or output transformer.
Yes.
Draw a winding "map" identifying each one and stating DC resistance for each.
That will help the guessing game.
Personally, I would do that even before applying any AC to any of them.
Draw a winding "map" identifying each one and stating DC resistance for each.
That will help the guessing game.
Personally, I would do that even before applying any AC to any of them.
Most probably are the rainbow wires the primaries (various international voltages) used with a rotating selector. And with thicker isolation.
The red and black twisted wires the secondaries.
The red and black twisted wires the secondaries.
Thanks, all! I'll investigate further with low AC voltage per OldDIY. Herr Großklaß is probably right about it being an old Sony part. And as JMFahey suggested, I will map it out for sure.