Mail Archive Search: <+from:wd7s@earthlink.net>

Results:

References: [ +from:wd7s@earthlink.net: 30 ]

Total 30 documents matching your query.

21. Re: [Amps] Solid State Relays Again (score: 1): Author: "Paul Hewitt" <wd7s@earthlink.net>; Date: Tue, 11 Feb 2014 16:32:31 -0800; Hi Jim I hear RTTY contest and I have to ask the obvious, are you using a heat sink or just the panel of the enclosure?? Are you using active or passive cooling in the enclosure?? I would also ask if; /archives//html/Amps/2014-02/msg00101.html (11,969 bytes)
22. Re: [Amps] HF2500 Power Supply Caps (score: 1): Author: "Paul Hewitt" <wd7s@earthlink.net>; Date: Sun, 6 Apr 2014 14:21:51 -0700; Hi Jim I see your posts about high voltage fuses disrupting current in 2ms so how about a part number/manufacturer. I would like to see the data sheets I2T curves. Most of these fuses open times are; /archives//html/Amps/2014-04/msg00070.html (10,317 bytes)
23. Re: [Amps] HF2500 Power Supply Caps (score: 1): Author: "Paul Hewitt" <wd7s@earthlink.net>; Date: Tue, 8 Apr 2014 09:23:57 -0700; Melt time does not equal stoppage of current flow at these voltages. The fuse element is replaced with a low impedance arc that keeps on pumping energy into the fault for several AC cycles until the; /archives//html/Amps/2014-04/msg00092.html (14,845 bytes)
24. Re: [Amps] HF2500 Power Supply Caps (score: 1): Author: "Paul Hewitt" <wd7s@earthlink.net>; Date: Tue, 8 Apr 2014 13:01:05 -0700; I saw those listed, nice that RF Parts will warranty them for a year. The owner had a no-name (Chinese) spare that's in it now. The Eimac had a 94 date code so twenty years of life isn't so bad. 73,; /archives//html/Amps/2014-04/msg00094.html (18,448 bytes)
25. Re: [Amps] WEIRD ONE! (score: 1): Author: "Paul Hewitt" <wd7s@earthlink.net>; Date: Sun, 20 Apr 2014 11:32:11 -0700; Hi Bill The meter between B- and chassis is the grid current meter and there should be no reading with no drive. Zero signal Idling, (Anode) current, (ZSAC) normally refers to plate current, the mete; /archives//html/Amps/2014-04/msg00182.html (8,763 bytes)
26. Re: [Amps] 2 Section Tune Cap Wanted (score: 1): Author: "Paul Hewitt" <wd7s@earthlink.net>; Date: Sat, 21 Jun 2014 12:40:21 -0700; Hi Jim I had Cardwell make the one in the 2X8877 auto tune amp. They gave it a part number, #154-16-17. It is the 4500 volt series. I made the one in the single tube amp from a 245uf cap and split it; /archives//html/Amps/2014-06/msg00068.html (8,384 bytes)
27. Re: [Amps] Variac Question (score: 1): Author: "Paul Hewitt" <wd7s@earthlink.net>; Date: Mon, 2 Feb 2015 13:38:07 -0800; This works if you have a neutral in the psu but you will be limited to ten amps for the plate transformer primary, pretty thin for most legal limit amps. 73, Paul Paul Hewitt WD7S Productions QRO Hom; /archives//html/Amps/2015-02/msg00008.html (8,627 bytes)
28. Re: [Amps] silver mica source (score: 1): Author: "Paul Hewitt" <wd7s@earthlink.net>; Date: Wed, 1 Apr 2015 09:21:42 -0700; Yet another source for silver mica; Alltronics.com Limited selection but most are .35 cents apiece 73, Paul Paul Hewitt WD7S Productions QRO Homebrew components http://home.earthlink.net/~wd7s/conten; /archives//html/Amps/2015-04/msg00007.html (8,218 bytes)
29. [Amps] Henry Filament feed-thru (score: 1): Author: "Paul Hewitt" <wd7s@earthlink.net>; Date: Wed, 9 Sep 2015 12:21:47 -0700; Greetings Ampers Does anyone have in their hoard one of the 60 amp feed-thru caps that Henry Radio used in their 3cx-3000 RF generators?? It was used for the filament supply. Also used in the 8K ultr; /archives//html/Amps/2015-09/msg00034.html (6,645 bytes)
30. Re: [Amps] Help with AM-456A/TRA-19 amplifier (score: 1): Author: "Paul Hewitt" <wd7s@earthlink.net>; Date: Mon, 23 Nov 2015 10:36:09 -0800; Hi Larry Have you tried calling Fair Radio?? They have a huge inventory military stuff not listed in their catalogs. Paul Paul Hewitt WD7S Productions QRO Homebrew components http://home.earthlink.ne; /archives//html/Amps/2015-11/msg00146.html (8,836 bytes)

Current List: 21 - 30
Page: [1] [2]