Heath W4 Output Xfmr - anyone measure one?? - diyAudio
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Old 1st May 2013, 01:44 PM   #1
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Default Heath W4 Output Xfmr - anyone measure one??

Sitting in my lazy b***ard chair.

Has anyone measured the output transformer for the W4 (black potted one)?

As in *not* in the circuit, without feedback, looking for the ultrasonic rise frequency. Also the primary Hy (inductance)??

I could measure it myself, but that would take actually work and time.

Anyone *know* for certain the manufacturer?

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Old 1st May 2013, 03:21 PM   #2
rmyauck is offline rmyauck  Canada
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Is it a 51-17? If it is, maybe Chicago as the other Heathkit transformers numbered like that are said to come from them.
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Old 1st May 2013, 07:14 PM   #3
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I'd have to check it to see the number...

not at this location, will be a few days before I have it in front of me, and then I have to remember to look!
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Old 21st May 2013, 01:24 PM   #4
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Long pause...

It is a 51-17.

One is numbered on top, the other on the side...

so, has anyone measured these?

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Old 21st May 2013, 06:14 PM   #5
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There are some measurements for that transformer in this pdf
http://www.one-electron.com/trans_p1.pdf
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