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Bottlehead Forum Welcome! Need support, you got it. Or share you ideas and experiences. |
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Bottlehead Forum Welcome! Need support, you got it. Or share you ideas and experiences. |
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In Reply to: Re: Great posts and now to save my TFA2004s... posted by Doc B. on March 1, 2005 at 08:47:31:
I collect failure mechanisms. Once you know what and why things fail, you can design that failure out.1. Were they used full wave center tap (2 diodes) or full wave bridge (4 diode)?
A HAM I used to work with said never to use HV transformers bridge that come with a CT because the insulation can't take the higher voltage. He normally ran his transmitter B+ over 1000V.
2. I've noticed a higher failure rate in magnetics since the switch from fluorinated cleaners to aqueous cleaners. However, I doubt this style power transformer sees a cleaning step after winding.
3. The charts say 270V peak is the magic voltage for corona (electrical discharges), below 270V you really don't have to worry about it. However, I haven't seen problems with corona in transformer until I've exceeded 400V B+.
Play safe and play longer! Don't be an "OUCH!" casualty.
Unplug it, discharge it and measure it (twice) before you touch it.. . .Oh!. . .Remember: Modifying things voids their warrantee.
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Follow Ups
- Were they used FW center tap or FW bridge? - VoltSecond 03/2/0520:35:34 03/2/05 (0)
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