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April 19th 10, 04:30 PM
posted to rec.radio.amateur.homebrew
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Transformer replacement
On Apr 18, 9:22 pm, JIMMIE wrote:
I have an HF amp that uses a single 811A in grounded grid. The power transformer smoked. The transformer was from an old TV set I think it was rated at 540VAC on the sec and I ran it into a voltage doubler for about 1300 VDC . Any info on something I could use as a replacement would be appreciated. Jimmie Andy comments: You might investigate using a high voltage transformer from an old microwave oven...... If the secondary voltage turns out to be too great, their construction makes it fairly easy to remove some turns... I haven't tried this, .... just something to consider.. Andy W4OAH |
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