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Total 9 documents matching your query.

1. [AMPS] dummy loads (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Sun, 15 Jun 1997 01:24:22 +0800; hi ampsters, i am designing and building a 1.5kw linear amplifier, and i'm to the stage where i've roasted an MFJ264 air-cooled 1.5kw dummy load. it is now a 150 ohm unit. i know they only dissipate; /archives//html/Amps/1997-06/msg00220.html (7,715 bytes)
2. [AMPS] dummy loads (score: 1): Author: measures@vc.net (Rich Measures); Date: Sun, 15 Jun 97 07:13:07 -0700; Increased R indicates that dissipation capability has been exceeded. If you check the actual rating of the resistor, I'm guessing that the resistor probably has about a 150w rating. This may have so; /archives//html/Amps/1997-06/msg00223.html (8,456 bytes)
3. [AMPS] dummy loads (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Mon, 16 Jun 1997 04:59:38 +0800; hi tom, thanks for the e-mail. i'm a physicist, so i'm not confused by things like : power = energy/ time; or , if you like, energy = power x time yes, that's when the power being dissipated is equal; /archives//html/Amps/1997-06/msg00224.html (9,052 bytes)
4. [AMPS] dummy loads (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Mon, 16 Jun 1997 11:41:30 +0000; I'm "trained" to think that way. I should have read the e-mail header. That might be what he was thinking. But the real problem is ALWAYS heat over time, not the CCS free air rating. The connector o; /archives//html/Amps/1997-06/msg00227.html (10,259 bytes)
5. [Amps] DUMMY LOADS (score: 1): Author: "Harold B. Mandel" <ka1xo@juno.com>; Date: Sun, 28 Dec 2003 11:29:41 -0500; Gentlemen, My paint can oil-filled dummy load does not provide the time duration necessary to achieve perfect tuning as it gets very hot and pops off the vent cap in addition to changing its internal; /archives//html/Amps/2003-12/msg00422.html (6,947 bytes)
6. Re: [Amps] DUMMY LOADS (score: 1): Author: Don Havlicek <n8de@thepoint.net>; Date: Sun, 28 Dec 2003 11:41:58 -0500; Your dummy load will work fine as long as you DO NOT try to tune up with key down in CW position. Use a string of dits at about 60 wpm to tune .. that's 50% duty cycle and your dummy load should do q; /archives//html/Amps/2003-12/msg00423.html (7,614 bytes)
7. Re: [Amps] DUMMY LOADS (score: 1): Author: R.Measures <r@somis.org>; Date: Sun, 28 Dec 2003 09:02:58 -0800; ** The most practical way to cool a 50-ohm terminating resistor is with moving water. Bird Co. makes a series of terminations that do this. A sealed 3" ABS tube - with glued-on inlet and outlet gard; /archives//html/Amps/2003-12/msg00424.html (8,474 bytes)
8. Re: [Amps] DUMMY LOADS (score: 1): Author: R.Measures <r@somis.org>; Date: Sun, 28 Dec 2003 10:14:02 -0800; ** This post contains a typographical blunder -- i.e., Bird's running-water cooled terminations are made from metal, Not plastic. The one I am planning to build is constructed from standard plumbing; /archives//html/Amps/2003-12/msg00427.html (9,432 bytes)
9. [Amps] Dummy loads (score: 1): Author: "Bill Coleman N2BC" <n2bc@stny.rr.com>; Date: Fri, 24 Sep 2004 08:57:32 -0400; All this chatter about dummy loads... There are usually many Bird loads posted on the e-place. A quick look shows six 500W or better right now at $60 or less. Of course the usual caveats apply, but I; /archives//html/Amps/2004-09/msg00442.html (7,111 bytes)

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