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1. [Amps] Silver plating (score: 1): Author: "James R Carr" <n7fcf@hctc.com>; Date: Thu, 9 Apr 2009 12:43:37 -0700; You sterilize and de-grease a new immersion cooling coil (50ft 3/8" copper) before use to cool down freshly boiled beer, by boiling it in a 50/50 mix of white vinegar and water. It makes the copper s; /archives//html/Amps/2009-04/msg00105.html (8,088 bytes)
2. Re: [Amps] High SWR (score: 1): Author: "James R Carr" <n7fcf@hctc.com>; Date: Wed, 22 Apr 2009 22:06:11 -0700; One could use ladder line. It's relatively lossless and can handle gobs of hi voltage. Jim N7FCF -- Original Message -- From: "Bill, W6WRT" <dezrat1242@yahoo.com> To: <amps@contesting.com> Sent: Wedn; /archives//html/Amps/2009-04/msg00239.html (9,236 bytes)
3. Re: [Amps] High SWR (score: 1): Author: "James R Carr" <n7fcf@hctc.com>; Date: Thu, 23 Apr 2009 12:46:37 -0700; Remember the length of twinlead taped to the twinlead feeder with a couple of NE-2 neon bulbs for an indicator? It was in the handbook in the 1960's Jim N7FCF -- Original Message -- From: "Jeff Carte; /archives//html/Amps/2009-04/msg00286.html (10,109 bytes)
4. Re: [Amps] Question: Ship Vacuum Variables at minimum or maximum? (score: 1): Author: "James R Carr" <n7fcf@hctc.com>; Date: Sat, 13 Jun 2009 15:44:53 -0700; The sure way to beat the united gorillas is to pack it like a fishing pole. A short length of pvc tubing of the right diameter with a couple of end cap caps fastened on with sheet metal screws. pad i; /archives//html/Amps/2009-06/msg00063.html (10,077 bytes)
5. Re: [Amps] TL922 Power Plugs (score: 1): Author: "Jim Carr" <n7fcf@hctc.com>; Date: Wed, 4 Nov 2009 00:50:06 -0800; I got called out on a service call years ago to a mobile home that was acting weird. It only had lights when the furnace came on and then very dim. Turns out it was fed from a panel that somebody boo; /archives//html/Amps/2009-11/msg00041.html (13,918 bytes)
6. Re: [Amps] TL922 Power Plugs (score: 1): Author: "Jim Carr" <n7fcf@hctc.com>; Date: Thu, 5 Nov 2009 00:52:55 -0800; I spent my working life wireing and the later half as a state electrical inspector. I am a certified master electrician and national;y certified electrical inspector retired since 2000. reading some; /archives//html/Amps/2009-11/msg00064.html (12,231 bytes)
7. Re: [Amps] B- questions (score: 1): Author: "Jim Carr" <n7fcf@hctc.com>; Date: Mon, 9 Nov 2009 15:30:49 -0800; Carl, It might be off the wall, but would a current limiting fuse be helpful? They have to clear within on half cycle to bolted short to be classed as current limiting and Bussman has a great variety; /archives//html/Amps/2009-11/msg00147.html (11,632 bytes)
8. Re: [Amps] B- questions (score: 1): Author: "Jim Carr" <n7fcf@hctc.com>; Date: Mon, 9 Nov 2009 15:47:00 -0800; Carl, Another one how about reverse parallel zeners? RCA used a system of reverse parallel zeners accros the 105v 120 cycle signal from the diferential anplifiers to the printed circuit motors of the; /archives//html/Amps/2009-11/msg00148.html (11,503 bytes)
9. Re: [Amps] Hot stick (score: 1): Author: "Jim Carr" <n7fcf@hctc.com>; Date: Thu, 10 Dec 2009 16:57:05 -0800; We always made our own 50 years ago. Get a long nylon rod from tme harware store. Attach a heavy wire hook to one end like #12 or 10 house wire solder a length of braid to it and put an aligator clip; /archives//html/Amps/2009-12/msg00287.html (8,132 bytes)
10. Re: [Amps] Isolation Transformer (score: 1): Author: "Jim Carr" <n7fcf@hctc.com>; Date: Sun, 13 Dec 2009 16:56:16 -0800; The purpose of the ground wire in a 120v/240v branch circuit is to blow the fuse if a hot wire touches the metal cabinet. The RF grounding system is a horse of another color and usually has it's own; /archives//html/Amps/2009-12/msg00313.html (8,543 bytes)
11. Re: [Amps] Isolation Transformer (score: 1): Author: "Jim Carr" <n7fcf@hctc.com>; Date: Sun, 13 Dec 2009 17:45:11 -0800; All grounds on a premises must be connected together according to the NEC -- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.716 / Virus Database: 270.14.105/2562 -; /archives//html/Amps/2009-12/msg00315.html (7,529 bytes)
12. Re: [Amps] Isolation Transformer (score: 1): Author: "Jim Carr" <n7fcf@hctc.com>; Date: Mon, 14 Dec 2009 11:03:42 -0800; At least two rods driven 8ft into the ground composed of either galvanized steel or coper 5/8" in dialmeter or a 3/4" galvanized pipe. Spaced no closer than 6 ft apart, grounded to the service main g; /archives//html/Amps/2009-12/msg00324.html (12,093 bytes)
13. Re: [Amps] WD-40 is not.... (score: 1): Author: "Jim Carr" <n7fcf@hctc.com>; Date: Mon, 1 Mar 2010 11:16:01 -0800; It does a great job on wasp's in an emergency if you squirt them with it. Jim -- Original Message -- From: "Cecil Acuff" <chacuff@cableone.net> To: "Charles Harpole" <k4vud@hotmail.com>; <amps@contes; /archives//html/Amps/2010-03/msg00020.html (9,407 bytes)
14. Re: [Amps] Solid state relays and step start (score: 1): Author: "Jim Carr" <n7fcf@hctc.com>; Date: Thu, 4 Mar 2010 13:05:38 -0800; Question. Are the plugin thermal delay relays still manufactured. We used them a lot twenty five years ago in manufacturing and large scale refrigeration control. They plugged into an octal socket an; /archives//html/Amps/2010-03/msg00078.html (8,846 bytes)
15. Re: [Amps] Solid state relays and step start (score: 1): Author: "Jim Carr" <n7fcf@hctc.com>; Date: Thu, 4 Mar 2010 14:06:55 -0800; Great. They were simple, inexpensiv and as reliable as the is long. They were used extensivly in early handbooks to delay B+ turn on to allow the mercury vapors 30 sec to warm up. Jim -- Original Mes; /archives//html/Amps/2010-03/msg00081.html (11,574 bytes)
16. Re: [Amps] DE-OX-IT (score: 1): Author: "Jim Carr" <n7fcf@hctc.com>; Date: Wed, 10 Mar 2010 00:22:00 -0800; can you burnish gold contacts? 40 years ago at Motorola we used a special burnishing blade that fit in an exacto knife handle. But they were bifurcated contacts. Jim -- Original Message -- From: "Bil; /archives//html/Amps/2010-03/msg00156.html (8,480 bytes)
17. Re: [Amps] Transformer ? (score: 1): Author: "James R Carr" <n7fcf@hctc.com>; Date: Sat, 24 Jul 2010 15:14:24 -0700; Boy that takes one back a few years. Another one used by PUD's in Eastern Washington was the corner grounded delta. Since one leg was grounded the fuse in that leg was replaced by a length of copper; /archives//html/Amps/2010-07/msg00235.html (9,665 bytes)
18. Re: [Amps] Fuses (score: 1): Author: "James R Carr" <n7fcf@hctc.com>; Date: Fri, 7 Jan 2011 18:01:40 -0800; Where pray tell do you get a hydraulic breaker? I have installed several thousand over the years but have yet to see one filled with oil. As for current limiting devices, the fastest breaker will hol; /archives//html/Amps/2011-01/msg00073.html (10,215 bytes)
19. Re: [Amps] Fuses (score: 1): Author: "James R Carr" <n7fcf@hctc.com>; Date: Fri, 7 Jan 2011 22:11:50 -0800; Who makes it and what's the model number? I'd like to see the specs on it especially the UL test results. When I retired in 2000 the only way they were able to get a breaker to clear a fault in less; /archives//html/Amps/2011-01/msg00075.html (12,792 bytes)
20. Re: [Amps] Fuses (score: 1): Author: "James R Carr" <n7fcf@hctc.com>; Date: Sat, 8 Jan 2011 00:55:54 -0800; Ask Bussman for their cataloge. They build current limiting fuses that will clear a fault of several thousand amps in less than 1/2 cycle -- Original Message -- From: "Ian White GM3SEK" <gm3sek@ifwte; /archives//html/Amps/2011-01/msg00078.html (9,351 bytes)

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