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1. [Amps] 2500 uF at 450V DC for $10.00 each (score: 199): Author: conrad at g0ruz.net (Conrad Farlow); Date: Wed Jul 2 07:57:25 2003; Yes but lots of joules are really bad when you are trying to interrupt a power supply that is arcing over in the event of a flashover, and we all know that this can, and does happen. The purpose of a; /archives//html/Amps/2003-07/msg00008.html (9,905 bytes)
2. [Amps] GU78B and socket for sale (score: 199): Author: conrad at g0ruz.net (Conrad Farlow); Date: Fri Jul 4 08:11:56 2003; I have a NOS GU78b and a socket with good isolation to 220Mz for sale. I am looking for ?330 GBP plus postage. I can do paypal, or nochex (for people with a UK credit card). I prefer not to take bank; /archives//html/Amps/2003-07/msg00030.html (6,307 bytes)
3. [Amps] 2500 uF at 450V DC for $10.00 each (score: 199): Author: conrad at g0ruz.net (Conrad Farlow); Date: Mon Jun 30 07:19:49 2003; Put 10 in series and you have a whole lot of joules to deal with in the event of a flashover, bad idea IMO. Conrad G0RUZ FOR SALE: ELECTROLYTIC CAPACITORS 2500 uF at 450V new, top-grade caps. Cornell; /archives//html/Amps/2003-06/msg00241.html (7,295 bytes)
4. [Amps] AL-80B questions (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Sun Mar 2 12:05:23 2003; Here we go again (GROANNNNNNNNNNNNNNNN.............) Conrad G0RUZ unless A jump to 250mA of ZSAC is not a clue? It takes more movement than this to short a 3-500Z. But Tom Rauch is apparently the onl; /archives//html/Amps/2003-03/msg00023.html (12,302 bytes)
5. [Amps] AL-80B questions (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Mon Mar 3 18:13:26 2003; Of course Rich it works very well, especially on this old chestnut! It reminds me of the re-runs we have on BBC TV in the UK. Still I must admit without you having a dig at Tom when he surfaces, I wo; /archives//html/Amps/2003-03/msg00074.html (14,850 bytes)
6. [Amps] Solidstate amps (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Mon Mar 3 18:45:45 2003; This technology has been around for quite a while in Pro Audio, I believe that Carver were the first, QSC are very well proven but the very best are Lab Gruppen, I took 10kW of this stuff on the road; /archives//html/Amps/2003-03/msg00076.html (7,482 bytes)
7. [Amps] Capacitor checker (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Sun Mar 30 18:41:10 2003; I couldn't agree more about the AADE unit, I am absolutely delighted with mine. I took it into the labs at the University and it compared very well with HP kit costing many times more, it was also ve; /archives//html/Amps/2003-03/msg00952.html (8,333 bytes)
8. [Amps] Russian tubes GS35b et al. (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Tue Feb 4 17:52:49 2003; I can confirm that with 3.5kV on load, the GS35B will produce 1.5kW out on 6m, 2m and 70cms. I have made around a dozen amplifiers with this tube. It is not as gainy as a 8877 but yes it is a good tu; /archives//html/Amps/2003-02/msg00084.html (7,406 bytes)
9. [Amps] Re: Voodoo "EMF' forces from grid current pulses (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Tue Feb 4 18:04:02 2003; I have just spent an entire semester working on electro magnetism and the physics is VERY fresh in my mind. Eric's calculations are sound, I am sorry Rich but you are way off the mark here, there is; /archives//html/Amps/2003-02/msg00085.html (11,731 bytes)
10. [Amps] Re: Voodoo "EMF' forces from grid current pulses (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Fri Feb 7 06:17:12 2003; This can be easily explained, the welding cables are subject to the earths magnetic field and any other localised magnetic fields, that's why they jump about. The question is, would this happen in a; /archives//html/Amps/2003-02/msg00137.html (11,630 bytes)
11. [Amps] Re: Voodoo "EMF' forces from grid current pulses (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Fri Feb 7 08:55:09 2003; Point taken about the poor magnetic shielding of amp chassis. I did not mean to imply that the tubes were immune to the Earth's magnetic field but that the currents flowing are not of sufficient magn; /archives//html/Amps/2003-02/msg00147.html (13,049 bytes)
12. [Amps] The Philosophy of Science (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Mon Feb 10 18:40:33 2003; As far as your 12-digit calculations based upon your 4 digit DVM readings - the 8 least significant digits are garbage (or at least 7 of them are - let's not get into issues about so-called 1/2 digit; /archives//html/Amps/2003-02/msg00236.html (8,455 bytes)
13. Spam Alert: Re: [Amps] The Philosophy of Science (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Tue Feb 11 10:53:36 2003; Well now Eric, that is quite an aggressive email and totally uncalled for. My point is that you have to get your hands dirty and not pontificate about the numbers to 4 decimal places. Once ANYTHING g; /archives//html/Amps/2003-02/msg00246.html (9,548 bytes)
14. [Amps] Computer modelling (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Tue Feb 11 13:22:31 2003; Ok Eric very fancy words but.............. Let us take a simple spice model, which I am sure you agree comes under the generic term 'computer modelling'. Forgive me if I'm wrong but the spice paramet; /archives//html/Amps/2003-02/msg00255.html (12,987 bytes)
15. [Amps] 2, 3-400Z's on SIX? de VY1JA (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Tue Feb 18 17:53:43 2003; On 6m it becomes critical for efficiency to keep the loaded Q down. With 2 tube amplifiers the output C is significant and it is difficult to get loaded Q's of below about 30. So I have found it usef; /archives//html/Amps/2003-02/msg00367.html (11,680 bytes)
16. [Amps] 2, 3-400Z's on SIX? de VY1JA (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Wed Feb 19 16:59:46 2003; Absolutely Steve, I should have mentioned that some form of gear reduction should be used. I just use the 'cheap' Japanese vernier dials which have adequate torque and backlash reduction to overcome; /archives//html/Amps/2003-02/msg00378.html (15,025 bytes)
17. [Amps] What is a Flapper Cap (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Wed Feb 19 21:10:43 2003; I thought that my nice pictorial links in the original posting explained it fairly well, they say a picture speaks a thousand words, so here's the links again http://wd7s.home.att.net/gallery-2.htm a; /archives//html/Amps/2003-02/msg00386.html (6,907 bytes)
18. [Amps] Series Capacitor Strings in HV Supplies (score: 199): Author: conrad at g0ruz.net (Conrad G0RUZ); Date: Thu Feb 27 17:25:36 2003; I am quite sure that you are correct Eric but I like to have some path for the caps to discharge through and they do serve that purpose, mind you what a waste of Energy. I also still short the supply; /archives//html/Amps/2003-02/msg00501.html (8,940 bytes)
19. [Amps] Re: Amps Digest, Vol 8, Issue 18 (score: 199): Author: conrad at g0ruz.net (Conrad Farlow); Date: Mon Aug 18 21:59:17 2003; I can also vouch for Tony Welsh, he is a Ukrainian now living in Wales. I have had numerous tubes off him, only one failure which I discovered after a 6 month delay, it was a GU78B and he replaced it; /archives//html/Amps/2002-09/msg00400.html (7,906 bytes)

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