Hello All,
A friend of mine just gave me a big power transformer that he took out of an old Tektronix tube oscilloscope. He doesn't remember the model of this scope but he says that it had a big air filter in the back and had two leather handles on top. They probably where all like that! I was wondering if someone knew the pinout and some details about this tranny. The model number is 120037 and it has two blue colored end bells
Thanks in advance, Phil
Best way is to do the following:
1) Use an ohmmeter, and determine windings (eg: 3 ohms 1-2, 300 ohms 15-15, etc). 2) Use either a variac (set to 10 percent of full value) or a filament transformer to drive one of the 3-5 ohm windings. Note that the "zero ohm" (or close to that) windings are filament windings, and that the high resistance windings are high voltage. 3) Measure the input AC voltage on the 3-5 ohm winding, and the AC voltage on all of the other windings. From those values, one can then easily determine the filament windings, and usually the primary/primaries. One could use ratios here, to determine ratings of all windings. Usually, these transformers have two 120V windings (1-3 and 2-4 most likely), which helps geratly. When a given winding like those mentioned "stand out", then one can appropiately connect the variac or filament transformer for verification.
Or you could go here
and ask again. mike
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