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Guys - the bottom line is this thing will certainly handle a ham gallon </span></font>
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power supply as part of a choke input filter or as a PI network filter </span></font>
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and I don't believe it will get hot or disipate 800 watts in such an </span></font>
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application as some here claim, - not unless you short out your </span></font>
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RF final tubes to ground anyway! It's not going to get very hot in </span></font>
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amateur AM, SSB or CW service!</span></font>
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The perfectionist dissection has run its course. Time for the empirical </span></font>
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radio amateurs to have their go at this now.... grin!</span></font>
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I tested the choke and it is good, so whoever wants it can play with </span></font>
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it happily.</span></font>
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--------------------------------------------------</span></font>
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On 28 Feb 2011 at 18:16, Bry Carling wrote:</span></font>
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The label is a little hard to read. At first glance it looked like 445 amps, </span></font>
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but I knew that wasn't rght. I just couldn't spot a DOT - "." </span></font>
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anywhere on the faded label. </span></font>
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Now, I think I might see a faint "1" ahead of the 445A which would </span></font>
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make more sense... That is to say 1.445 Amps... Seem reasonable? </span></font>
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What a funny rating for them to use and be so specific. But then, it is G.E.
(grin!) </span></font>
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Bry, AF4K </span></font>
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On 28 Feb 2011 at 16:00, George Babits wrote: </span></font>
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> At the risk of receiving some scathing comments I have to say that </span></font>
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> the </span></font>
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> purpose of a power supply choke is to smooth rectified DC, not </span></font>
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> generate or </span></font>
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> dissipate power. Judging from the size of this choke it is probably </span></font>
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> .45 </span></font>
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> amps. The resistance is the DC resistance so you have some idea of </span></font>
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> what the </span></font>
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> voltage drop across the choke will be when you design your power </span></font>
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> supply. </span></font>
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> 73, </span></font>
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> George </span></font>
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> W7HDL </span></font>
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> </span></font>
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> </span></font>
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> ----- Original Message ----- </span></font>
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> From: "Lewis C. Emerson" <lemerson@juno.com> </span></font>
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> To: <jfor@quik.com> </span></font>
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> Cc: <boatanchors@puck.nether.net>; <armyradios@yahoogroups.com> </span></font>
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> Sent: Monday, February 28, 2011 3:51 PM </span></font>
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> Subject: Re: [Boatanchors] FS: Large 4.25 Henry Choke </span></font>
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> </span></font>
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> </span></font>
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> > John - If its 0.45 A doesn't that mean it's an 8 watt unit? </span></font>
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> Mighty big </span></font>
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> > for just 8 watts. Must be lotsa iron in there. - Doc, W4ITJ </span></font>
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> > </span></font>
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> > ---------- Original Message ---------- </span></font>
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> > From: "J. Forster" <jfor@quik.com> </span></font>
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> > To: bcarling@cfl.rr.com </span></font>
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> > Cc: boatanchors@puck.nether.net, armyradios@yahoogroups.com </span></font>
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> > Subject: Re: [Boatanchors] FS: Large 4.25 Henry Choke </span></font>
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> > Date: Mon, 28 Feb 2011 12:10:15 -0800 (PST) </span></font>
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> > I don't think so. </span></font>
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> > </span></font>
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> > Power = I^2 * R </span></font>
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> > = 4.45 ^2 * 39 = 800 W </span></font>
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> > </span></font>
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> > Maybe, 0.45 A </span></font>
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> > </span></font>
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> > -John </span></font>
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> > </span></font>
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> > ===================== </span></font>
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> > </span></font>
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> > </span></font>
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> >> FOR SALE: General Electric ChokeType 7471984 </span></font>
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> >> </span></font>
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> >> 4.25 H at 39 ohms resistance. Current rating appears to read </span></font>
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> >> 4.45A but not sure. Made in Schenectady, NY </span></font>
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> >> Dimensions: 5" X 3-5/8" X 4-3/8" tall. </span></font>
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> >> Painted gray, potted, and as ceramic screw terminals with brass </span></font>
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> >> nuts on the top of one end. </span></font>
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> >> Mounts via four screw #10 holes in base. </span></font>
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> >> </span></font>
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> >> QTY 1 available for $15.00 plus shipping. </span></font>
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> >> </span></font>
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> >> 73 de AF4K, Bry Carling </span></font>
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> >> _______________________________________________ </span></font>
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> >> Boatanchors mailing list </span></font>
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> >> Boatanchors@puck.nether.net </span></font>
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> >> https://puck.nether.net/mailman/listinfo/boatanchors </span></font>
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> >> </span></font>
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> > </span></font>
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> > </span></font>
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> > _______________________________________________ </span></font>
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> > Boatanchors mailing list </span></font>
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> > Boatanchors@puck.nether.net </span></font>
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> > https://puck.nether.net/mailman/listinfo/boatanchors </span></font>
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> > </span></font>
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> > </span></font>
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> > </span></font>
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> > _______________________________________________ </span></font>
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> > Boatanchors mailing list </span></font>
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> > Boatanchors@puck.nether.net </span></font>
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> > https://puck.nether.net/mailman/listinfo/boatanchors </span></font>
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> </span></font>
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> _______________________________________________ </span></font>
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> Boatanchors mailing list </span></font>
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> Boatanchors@puck.nether.net </span></font>
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> https://puck.nether.net/mailman/listinfo/boatanchors </span></font>
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