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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: RE: W4AM is good, W5AM is known for audio transformer failures........nt posted by Neff on June 26, 2012 at 19:42:31:
The W5 with the 16309 OPT is prone to failure. The later W5 with the 16458 OPT is generally quite reliable. Both versions of the W5 have a higher than normal PT failure rate IME but the addition of an inrush limiter on the primary helps a lot. Heath knew there were problems and added a "surgistor" at the primary of later versions.
The W4 is sometimes considered to be reliable but is seriously handicapped by a compromised OPT. It tends to spontaneously oscillate with capacitive loads. The W5 is stable under the same loading conditions.
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- Actually.... - Steve O 15:35:31 06/27/12 (0)
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