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1. [Amps] Serious design stage (score: 1): Author: Jim Isbell <millenniumfalcon@cableone.net>; Date: Tue, 20 Apr 2004 13:29:15 -0500; After collecting parts for most of a year I am in the serious design stage of a 4-1000A linear. The power supply, because of its size is to be external and connected by a cable. In the first design I; /archives//html/Amps/2004-04/msg00127.html (7,428 bytes)
2. Re: [Amps] Serious design stage (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Wed, 21 Apr 2004 00:17:15 -0500; seen Been there, done that, works great! This is the scheme used when adding the big Peter Dahl transformer to the Alpha 77SX. There are many out there in use; the guys just don't talk about it much; /archives//html/Amps/2004-04/msg00129.html (8,073 bytes)
3. Re: [Amps] Serious design stage (score: 1): Author: peter.chadwick@Zarlink.Com; Date: Wed, 21 Apr 2004 09:11:52 +0200; done. I've seen a number of professional tx's in which it was done. One of them was pretty massive - it had a pair of 813s modulated by a pair, and took two 6 foot high 19 inch wide racks. The main H; /archives//html/Amps/2004-04/msg00130.html (7,625 bytes)
4. Re: [Amps] Serious design stage (score: 1): Author: "Ian White, G3SEK" <G3SEK@ifwtech.co.uk>; Date: Wed, 21 Apr 2004 08:08:46 +0100; Jim Isbell wrote: After collecting parts for most of a year I am in the serious design stage of a 4-1000A linear. The power supply, because of its size is to be external and connected by a cable. In; /archives//html/Amps/2004-04/msg00131.html (9,257 bytes)
5. Re: [Amps] Serious design stage (score: 1): Author: rlm <r@somis.org>; Date: Wed, 21 Apr 2004 04:20:45 -0700; On Apr 20, 2004, at 11:29 AM, Jim Isbell wrote: After collecting parts for most of a year I am in the serious design stage of a 4-1000A linear. The power supply, because of its size is to be external; /archives//html/Amps/2004-04/msg00132.html (9,510 bytes)
6. Re: [Amps] Serious design stage (score: 1): Author: Jim Isbell <millenniumfalcon@cableone.net>; Date: Wed, 21 Apr 2004 09:43:58 -0500; Two reasons for the 4-1000A: a) I already have it with socket etc. b) Its the coolest looking tube in the world and part of this project, maybe 85%, is to create a linear that will cause ooohs and aa; /archives//html/Amps/2004-04/msg00133.html (10,297 bytes)
7. Re: [Amps] Serious design stage (score: 1): Author: Merv Schweigert <kh6jj@mobettah.net>; Date: Wed, 21 Apr 2004 09:57:20 -1000; b) Its the coolest looking tube in the world and part of this project, maybe 85%, is to create a linear that will cause ooohs and aaaahhs from the onlookers as they view the 4-1000A and the 866's lit; /archives//html/Amps/2004-04/msg00135.html (8,886 bytes)
8. Re: [Amps] Serious design stage (score: 1): Author: "AA6DX" <aa6dx@pacbell.net>; Date: Wed, 21 Apr 2004 13:16:22 -0700; Hmmm .. just wonder why the large wire requirement, Phil? We are not connecting a restaurant size `lectric range here. Assuming we are talking AWG size wiring, the current carrying capabilities @ 230; /archives//html/Amps/2004-04/msg00136.html (9,931 bytes)
9. Re: [Amps] Serious design stage (score: 1): Author: R.Measures <r@somis.org>; Date: Wed, 21 Apr 2004 13:36:36 -0700; On Apr 21, 2004, at 7:43 AM, Jim Isbell wrote: Two reasons for the 4-1000A: a) I already have it with socket etc. b) Its the coolest looking tube in the world and part of this project, maybe 85%, is; /archives//html/Amps/2004-04/msg00137.html (13,794 bytes)
10. Re: [Amps] Serious design stage (score: 1): Author: R.Measures <r@somis.org>; Date: Wed, 21 Apr 2004 13:54:37 -0700; On Apr 21, 2004, at 12:08 AM, Ian White, G3SEK wrote: Jim Isbell wrote: After collecting parts for most of a year I am in the serious design stage of a 4-1000A linear. The power supply, because of it; /archives//html/Amps/2004-04/msg00138.html (10,459 bytes)
11. Re: [Amps] Serious design stage (score: 1): Author: R.Measures <r@somis.org>; Date: Wed, 21 Apr 2004 14:06:10 -0700; On Apr 20, 2004, at 10:17 PM, Phil Clements wrote: There must be some reason this is not a good idea as I have never seen it done. Any comments??? Been there, done that, works great! This is the sche; /archives//html/Amps/2004-04/msg00139.html (9,557 bytes)
12. Re: [Amps] Serious design stage (score: 1): Author: Jim Isbell <millenniumfalcon@cableone.net>; Date: Wed, 21 Apr 2004 16:13:16 -0500; OK, what do you suggest? I would prefer glow bugs, but may have to go to solid state. I was planing on probably only 4500VDC at less than 0.5 amps. I am going to make the transformer in a box with se; /archives//html/Amps/2004-04/msg00140.html (9,829 bytes)
13. Re: [Amps] Serious design stage (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Wed, 21 Apr 2004 16:19:37 -0500; not talking single ~ That is not correct because you did not specify a length. I don't like warm wiring inside my walls, so I spring for a few bucks more for cable when I wire a ham shack. My servic; /archives//html/Amps/2004-04/msg00141.html (9,751 bytes)
14. Re: [Amps] Serious design stage (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Wed, 21 Apr 2004 16:24:31 -0500; amen, Phil. Gentlemen don't like to admit that they cheat in radio contests. I knew a ham in San Diego whose HV transformer went in a St. Bernard-size dogless doghouse built on a concrete slab outsid; /archives//html/Amps/2004-04/msg00142.html (8,999 bytes)
15. Re: [Amps] Serious design stage (score: 1): Author: "AA6DX" <aa6dx@pacbell.net>; Date: Wed, 21 Apr 2004 15:35:16 -0700; Hmmm. OK .. guess everything is bigger in Tejas ... including Ohm's law! HIHI ... Let's do a "what-if" ... IF you had 24Ø VAC Single ~ -- you ran it down 25' of #16 copper ... and you were run; /archives//html/Amps/2004-04/msg00144.html (12,489 bytes)
16. Re: [Amps] Serious design stage (score: 1): Author: R.Measures <r@somis.org>; Date: Wed, 21 Apr 2004 14:29:34 -0700; On Apr 21, 2004, at 2:24 PM, Phil Clements wrote: amen, Phil. Gentlemen don't like to admit that they cheat in radio contests. I knew a ham in San Diego whose HV transformer went in a St. Bernard-siz; /archives//html/Amps/2004-04/msg00145.html (9,316 bytes)
17. Re: [Amps] Serious design stage (score: 1): Author: peter.chadwick@Zarlink.Com; Date: Thu, 22 Apr 2004 09:22:38 +0200; In that case, how about the 872? It's a sort of big brother to the 866. But this is one application where I'd go solid state. One problem with big mercury vapour (and even big xenon) rectifiers was t; /archives//html/Amps/2004-04/msg00146.html (8,678 bytes)
18. Re: [Amps] Serious design stage (score: 1): Author: R.Measures <r@somis.org>; Date: Thu, 22 Apr 2004 06:18:18 -0700; On Apr 21, 2004, at 3:35 PM, AA6DX wrote: Hmmm. OK .. guess everything is bigger in Tejas ... including Ohm's law! HIHI ... Let's do a "what-if" ... IF you had 24 VAC Single ~ -- you ran it down 25'; /archives//html/Amps/2004-04/msg00149.html (13,900 bytes)
19. Re: [Amps] Serious design stage (score: 1): Author: R.Measures <r@somis.org>; Date: Thu, 22 Apr 2004 06:26:21 -0700; On Apr 21, 2004, at 1:16 PM, AA6DX wrote: Hmmm .. just wonder why the large wire requirement, Phil? C-input filtering has around 10x the peak current demand that resonant-L filtering has -- so it's b; /archives//html/Amps/2004-04/msg00151.html (8,883 bytes)
20. Re: [Amps] Serious design stage (score: 1): Author: peter.chadwick@Zarlink.Com; Date: Fri, 23 Apr 2004 09:01:49 +0200; I thought these days that Pacific G & E (I'm told that's 'Pacific Graft and Extrortion!') was charging so much for electricity that very few could afford to run a 'California kilowatt' any more. 73 P; /archives//html/Amps/2004-04/msg00158.html (8,230 bytes)

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