| To: | ToddRoberts2001@aol.com, amps@contesting.com |
|---|---|
| Subject: | Re: [Amps] Interesting Article On Tungsten Filament Life - AC is Best? |
| From: | G3rzp@aol.com |
| Date: | Thu, 3 Mar 2005 06:26:18 EST |
| List-post: | <mailto:amps@contesting.com> |
Metal migration is well known on DC, and increases rapidly with temperature. However, reversing the polarity of the filament supply on each switch on, combined with surge current limitation, should get round this. 73 Peter (this week OZ/G3RZP) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps |
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