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Re: [Amps] toroid filament choke?

To: k7fm <k7fm@teleport.com>
Subject: Re: [Amps] toroid filament choke?
From: R.Measures <r@somis.org>
Date: Thu, 28 Oct 2004 03:48:49 -0700
List-post: <mailto:amps@contesting.com>

On Oct 27, 2004, at 7:58 PM, k7fm wrote:


Will said:

"16 gage is rated for 10 amperes in conduit"

Conduit is a closed space. An open space, especially with air blowing over
it, will allow considerably higher current.

Indeed, Colin. I use #22 Cu at 15A in TL-922s for dropping the filament V from >5.3V to c. 4.8V, and it runs less warm than a 1/4W resistor. However, transformers are a whole nuther ballgame because the thermal resistance is much higher.

Colin K7FM



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Richard L. Measures, AG6K, 805.386.3734. www.somis.org


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