Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[AMPS\]\s+3\-500Z\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[AMPS\]\s+3\-500Z\s*$/: 51 ]

Total 51 documents matching your query.

1. [Amps] 3-500Z (score: 1): Author: iz4efn@libero.it (IZ4EFN - Alessio); Date: Thu, 16 Jan 2003 12:25:40 +0100; Hi guys, I'm tring to help a friend, IR4R. He is looking for a couple (or at least one) 3-500Z, also on second hand. Anyone has an offer? Please mail me direct at iz4efn@libero.it Thanks! IZ4EFN on o; /archives//html/Amps/2003-01/msg00125.html (6,215 bytes)
2. [Amps] 3-500z (score: 1): Author: vk6apk@eon.net.au (Alek Petkovic); Date: Tue, 26 Mar 2002 07:00:22 +0800; G'day, Found this ad on http://swap.qth.com/c_misc.asp?startnum=10&data=category,MISC,MISCELLANEOUS **3-500Z Filament to Grid Short Fix** Does anyone know if a 3-500Z tube experiencing a filament to; /archives//html/Amps/2002-03/msg00579.html (7,355 bytes)
3. [Amps] 3-500z (score: 1): Author: fortra@siol.net (Nermin Bajramoviæ); Date: Tue, 26 Mar 2002 09:44:12 +0100; Hello, as far as I could remember, several articles cover that topic in 14th. edition of Hints&Kinks by ARRl. Basically the short, could be removed by putting appropriate amount of AC voltage between; /archives//html/Amps/2002-03/msg00586.html (7,242 bytes)
4. [Amps] 3-500z (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Tue, 26 Mar 2002 04:24:35 -0800; ? We used to unshort them with our 11g centrifuge. However, only about 1/3 of the 3-500s were salvageable due to a grid-fil leakage problem that sometimes accompanied the parasite which bent the fil; /archives//html/Amps/2002-03/msg00588.html (7,473 bytes)
5. [Amps] 3-500z (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Tue, 26 Mar 2002 04:56:59 -0800; ? A new, cold, 3-500z has a grid-filament B.V. of c. 8000v. When the hot (1820ºK) filament is bent by a burst of grid-current during an intermittent self-oscillation, it can touch and sometimes; /archives//html/Amps/2002-03/msg00590.html (8,035 bytes)
6. [Amps] 3-500z (score: 1): Author: fortra@siol.net (Nermin Bajramoviæ); Date: Tue, 26 Mar 2002 15:07:27 +0100; Hello Rich, yeah, you are right. Or, should I say Murphy. Nevertheless I was too fast with the advice and "cure". The actual article has been published in Hints&Kinks 13th edition and not 14th as I w; /archives//html/Amps/2002-03/msg00593.html (7,398 bytes)
7. [Amps] 3-500z (score: 1): Author: 2@mail.vcnet.com (Richard); Date: Tue, 26 Mar 2002 09:54:45 -0800; ? The rub was more with advertisers than with the League. The match that lit the advertiser's fuse was "The Nearly Perfect Amplifier" in January, 1994 *QST*. ETO and MFJ were apparently the most voc; /archives//html/Amps/2002-03/msg00601.html (8,912 bytes)
8. [AMPS] 3-500Z (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Fri, 28 Sep 2001 10:55:42 -0700; Is the 500mA limit one imposed on safe conditions for the anode, or for the cathode? The question is based on SOA regarding Pdiss; I run my AL80B at all sorts of (intermittant) high current levels bu; /archives//html/Amps/2001-09/msg00471.html (9,317 bytes)
9. [AMPS] 3-500Z (score: 1): Author: baycock@HIWAAY.NET (Bill Aycock); Date: Fri, 28 Sep 2001 13:29:50 -0500; The issue is ONLY that Rich brings up anything bad he can direct at Tom, given the slightest excuse. The question was about Capacitors, and equalizing resistors, and Rich had no clear defense for his; /archives//html/Amps/2001-09/msg00472.html (8,125 bytes)
10. [AMPS] 3-500Z (score: 1): Author: 2@vc.net (2); Date: Fri, 28 Sep 2001 17:04:20 -0700; // The question is why hasn't Mr. Rauch published the alleged Eimac authorization for 500mA? // Tom's assertion that 300-ohms/V of equalizer R is correct has no basis in any info I've seen from elec; /archives//html/Amps/2001-09/msg00491.html (9,064 bytes)
11. [AMPS] 3-500Z (score: 1): Author: 2@vc.net (2); Date: Fri, 28 Sep 2001 17:04:26 -0700; // Neither. The 3-500Z has a linear peak-emission limit of c. 1.2a. This corresponds to c. 400mA average. Initally, the 3-500Z had a rating of 350mA. This was later increased to 400mA. // On CW or F; /archives//html/Amps/2001-09/msg00496.html (10,462 bytes)
12. [AMPS] 3-500Z (score: 1): Author: baycock@HIWAAY.NET (Bill Aycock); Date: Fri, 28 Sep 2001 19:15:05 -0500; Rich replied to me directly with more of the same, and appended this question to the end. I have seen the original quote he took this from. I dont believe he has the guts to give an accurate copy of; /archives//html/Amps/2001-09/msg00500.html (7,965 bytes)
13. [AMPS] 3-500Z (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 28 Sep 2001 20:44:29 -0400; Neither. It is a typical operating parameter based on a certain ratio of peak to average current. As long as IMD is OK, you are OK. Unlike MOX cathode tubes, thoriated tungsten tubes are NOT damaged; /archives//html/Amps/2001-09/msg00501.html (8,516 bytes)
14. [AMPS] 3-500Z (score: 1): Author: 2@vc.net (2); Date: Fri, 28 Sep 2001 20:46:31 -0700; // Please post it here. // Mr. Rauch apparently does not agree. [Grate Debate archive >22 Nov., 1996] // It's not as difficult as it may look, Bill. Since L and R are in parallel, it's easier for me; /archives//html/Amps/2001-09/msg00508.html (8,766 bytes)
15. [AMPS] 3-500Z (score: 1): Author: baycock@HIWAAY.NET (Bill Aycock); Date: Fri, 28 Sep 2001 23:09:12 -0500; Can you? Bill-W4BSG - Bill Aycock -- Persimmon Hill Woodville, Alabama, US 35776 (in the N.E. corner of the State) W4BSG -- Grid EM64vr baycock@HiWAAY.net w4bsg@arrl.net -- FAQ on WWW: http://www.con; /archives//html/Amps/2001-09/msg00509.html (7,657 bytes)
16. [AMPS] 3-500Z (score: 1): Author: 2@vc.net (2); Date: Fri, 28 Sep 2001 21:26:05 -0700; // Amen. // AC current does not have the same magnetic effect as DC current. In the autopsy photo on p.15 in the September, 1990 *QST* ("Parasitics Revisited"), the filament of a low-hours 3-500Z is; /archives//html/Amps/2001-09/msg00510.html (9,304 bytes)
17. [AMPS] 3-500Z (score: 1): Author: cburk001@juno.com (Charles W BWW Burkhardt); Date: Sat, 17 Mar 2001 10:53:16 -0600; Gentlemen: Trouble with my Heath SB-100, which has a 3-500Z tube. By mistuning the unit I took out a couple of resisters and the grid current meter in the meter circuit board. Have replaced the bad c; /archives//html/Amps/2001-03/msg00156.html (7,008 bytes)
18. [AMPS] 3-500Z (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Mon, 19 Mar 2001 08:45:44 +0700; In my experience with same tube, When plate getting red with small fraction of plate current ma, probably something wrong with tube cathode bias, make sure cathode bias working properly. de Firson -; /archives//html/Amps/2001-03/msg00166.html (8,087 bytes)
19. [AMPS] 3-500Z (score: 1): Author: vk6apk@eon.net.au (Alek Petkovic); Date: Tue, 30 Nov 1999 07:33:45 +0800; G'day all, I'm looking for 1 x Eimac 3-500Z tube to use in a SB220. It is for my friend John, VK6JX, who just had a very good used pair shipped to him but unfortunately one of them was damaged in tra; /archives//html/Amps/1999-11/msg00549.html (7,147 bytes)
20. [AMPS] 3-500Z (score: 1): Author: measures@vcnet.com (measures); Date: Mon, 29 Nov 1999 16:58:47 -0700; This was a common fault in Eimac 3-500Zs that were manufactured in Utah. The problem is that not enough current was used to cause an adequate melt at anode cooler spotwelds. This defect can be spott; /archives//html/Amps/1999-11/msg00551.html (7,387 bytes)

Current List: 1 - 20
Page: [1] [2] [3]