[Amps] toroid filament choke?

R.Measures r at somis.org
Wed Oct 27 08:00:39 EDT 2004


On Oct 26, 2004, at 10:41 PM, Will Matney wrote:

> Tony,
>
> You have to keep in mind the current surge there until the heater 
> warms up. The colder the heater is, the more current it draws. I would 
> use a conductor with at least 750 cir mils per ampere. For 3 amperes, 
> that equals out to be about 16 AWG wire for the minimum.

In single layer RF choke service, #16 silicone-varnished (Type WT) Cu 
wire will handle 20A.  This type of wire is presently SOP in electric 
motor shops.

> Without doing any calculations, a higher inductance is indeed needed 
> for 160 meters. ...


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



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