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181. [AMPS] Diodes (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 29 Jul 1999 10:13:40 -0700; ? Avalanche threshold. They don't need to share the reverse potential equally. For example, if you had a 800piv diode in series with a 1200piv diode, and a 1900v reverse pulse came along, would you; /archives//html/Amps/1999-07/msg00622.html (8,721 bytes)
182. [AMPS] Diodes (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 29 Jul 1999 10:32:57 -0700; -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com Search: http://www.cont; /archives//html/Amps/1999-07/msg00624.html (7,214 bytes)
183. [AMPS] In diodes we trust (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 29 Jul 1999 10:34:04 -0700; ? yes ? indeed. ? agreed ? I would add that, at 60Hz, the reverse currents in each diode in a string are always equal provided that no "equalizers" are used. Rich... R. L. Measures, 805-386-3734, AG; /archives//html/Amps/1999-07/msg00625.html (12,912 bytes)
184. [AMPS] In Diodes We Trust...? (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 30 Jul 1999 03:35:51 -0700; ? Mike: We get the 1N5408 diodes at a reasonable price because we buy a reel of1200. We pass the savings along to our customers. When we are set up, it takes very little time to test and mark one di; /archives//html/Amps/1999-07/msg00633.html (8,770 bytes)
185. [AMPS] In diodes we trust (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 30 Jul 1999 04:42:42 -0700; Are we talking aout measuring power at microwave frequencies?. ? As well you should have been. We are not talking about measuring power at anything other than HF. ? For measuring up to several kilov; /archives//html/Amps/1999-07/msg00635.html (8,818 bytes)
186. [AMPS] Diodes (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 30 Jul 1999 04:42:47 -0700; ? The breakdown region is defined but not all that sudden. It means that the transistion is smooth and doesn't make any sudden moves. ? That's because the current varies along the knee, Tom. However; /archives//html/Amps/1999-07/msg00636.html (9,483 bytes)
187. [AMPS] Tube question (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 30 Jul 1999 04:42:49 -0700; ? Not high voltage fuses. Are you suggesting that 250v fuses are suitable for fusing the anode supply? Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.co; /archives//html/Amps/1999-07/msg00637.html (8,484 bytes)
188. [AMPS] In Diodes We Trust...? (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 30 Jul 1999 04:51:14 -0700; I don't know, however, some rectifiers use glass passivation and that should be rather good for keeping moisture out of the p/n junction. .// 1N5408s have a substantial surface leakage path. Rich...; /archives//html/Amps/1999-07/msg00638.html (8,151 bytes)
189. [AMPS] Tube question (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 30 Jul 1999 08:53:59 -0700; A proper glitch resistor limits peak current reliably. A fuse can not. Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submiss; /archives//html/Amps/1999-07/msg00642.html (7,652 bytes)
190. [AMPS] In Diodes We Trust...? (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 30 Jul 1999 09:32:36 -0700; ? We pay way more than 4.3 cents for 1N5408s. We do Not buy the cheapest stuff. Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.htm; /archives//html/Amps/1999-07/msg00645.html (8,477 bytes)
191. [AMPS] NCL Diagram Available (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 30 Jul 1999 11:03:56 -0700; An NCL-2000 (with circuit improvements) diagram is now available on my Web site. This is a high res. 2x lifesize image (144dpi) so you can read the fine print. This is not a small download!. Rich...; /archives//html/Amps/1999-07/msg00649.html (6,707 bytes)
192. [AMPS] In Diodes We Trust...? (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 31 Jul 1999 03:44:09 -0700; ? Wow. With what value, or values, of ITT/Jennings caps. were you experiencing this failure rate, Tom? // Maybe the quality is different from when Centralab owed the company? ? The way I find out wh; /archives//html/Amps/1999-07/msg00656.html (9,920 bytes)
193. [AMPS] explain this one (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 31 Jul 1999 03:44:11 -0700; ? My guess is that arcing of open 160m Tune padder contacts on another band could be due to different mechanism. /See the bandswitch on page 33 of the October, 1990 *QST*/. ? The 160m Tune padder co; /archives//html/Amps/1999-07/msg00657.html (9,012 bytes)
194. [AMPS] explain this one (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 31 Jul 1999 13:13:06 -0700; stationary connected to the smoothed. This series are ? The bandswitches used in the AL-80, SB-220 and SB-1000 are similar and have a measured breakdown potential of over 5500v. The actual tank piv; /archives//html/Amps/1999-07/msg00661.html (9,589 bytes)
195. [AMPS] explain this one (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 31 Jul 1999 15:43:01 -0700; During the grate parasitics debate, Tom Rauch claimed the following" -- From: W8JITom@aol.com Newsgroups: rec.radio.amateur.homebrew Subject: Re: Good source for amplifier tips To: <amps@contesting.; /archives//html/Amps/1999-07/msg00665.html (10,815 bytes)
196. [AMPS] 4CX1000A (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 1 Jun 1999 02:51:46 -0700; To check the ceramic-metal seals, High-pot the tube at c. 6kV. I would be suspicious of more than approx. 10uA of leakage. - good luck, Ron Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/; /archives//html/Amps/1999-06/msg00001.html (6,957 bytes)
197. [AMPS] High Speed Switching parts kit component error in Q1. (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 1 Jun 1999 02:51:50 -0700; Apparently, wrong polarity Q1 transistors have recently been sent out with our p/n 47 kits. I am not sure when the switch was made, so I am sending the correct Q1 to everyone who ordered a kit this y; /archives//html/Amps/1999-06/msg00002.html (7,145 bytes)
198. [AMPS] Alpah 77DX rcve bypass problem (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 1 Jun 1999 02:51:48 -0700; - my vote is for residual magnetism, Don. As I recall, there is a reed relay in addition to the vacuum relay. I would interchange the wires leading to the relay coils. - cheers Rich... R. L. Measure; /archives//html/Amps/1999-06/msg00003.html (8,562 bytes)
199. [AMPS] resonated input chokes (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 1 Jun 1999 17:33:55 -0700; ? Tom: What was the bleeder restance in the supply that ran amok. Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions:; /archives//html/Amps/1999-06/msg00014.html (7,954 bytes)
200. [AMPS] Bias for SB-220 (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 1 Jun 1999 17:33:58 -0700; ? The ZSAC (zero signal anode current) matters more than the actual bias voltage. In a 3-500Z, IMD goes up rapidly with a ZSAC of less than 65mA, I like to use between 75 and 100mA, - If an electron; /archives//html/Amps/1999-06/msg00015.html (9,093 bytes)

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