| To: | <tentec@contesting.com> |
|---|---|
| Subject: | [TenTec] Computer Interface Question |
| From: | geraldj@ames.net (Dr. Gerald N. Johnson, electrical engineer) |
| Date: | Mon, 02 Apr 2001 21:57:43 -0600 |
You need a steel box to protect the transformers from the vertical sweep frequency magnetic fields. Or some mu-metal to enclose the transformers. High priced audio transformers for low level used to come in steel containers, and mu-metal shields were available. And aluminum box may have some effect, but a steel box will have more effect on the magnetic fields. 73, Jerry, K0CQ -- FAQ on WWW: http://www.contesting.com/FAQ/tentec Submissions: tentec@contesting.com Administrative requests: tentec-REQUEST@contesting.com Problems: owner-tentec@contesting.com |
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