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301. [AMPS] Experience with K2AW rectifiers anyone? (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Tue, 27 May 1997 21:55:22 +0000; Hi Pat, Interesting. What manufacturing process suddenly changed or improved?? I've heard that mentioned several places, does anyone know the source of that information? 73, Tom W8JI -- FAQ on WWW: h; /archives//html/Amps/1997-05/msg00236.html (9,863 bytes)
302. [AMPS] consider leaving the caps... (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Wed, 28 May 1997 11:54:34 +0000; Hello Skip, I agree with that suggestion. Capacitors are a good idea, provided the tolerance is considered in the design. Besides your valid concerns about power line transients, capacitors also pre; /archives//html/Amps/1997-05/msg00240.html (7,971 bytes)
303. [AMPS] Experience with K2AW rectifiers anyone? (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Wed, 28 May 1997 21:35:13 +0000; Hi Ian, Tow or three years back, I called Motorola and talked Dave Hollander. Dave contributed to the Motorola Rectifier Handbook, and that handbook has absolutely no information of series HV strings; /archives//html/Amps/1997-05/msg00257.html (14,296 bytes)
304. [AMPS] Experience with K2AW rectifiers anyone? (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Thu, 29 May 1997 08:09:15 +0000; Hi Ron, I had a long talk with K2AW years ago, when he was trying to get me to use block rectifiers in power supplies. At that time, he told me the diodes were simply conventional rectifiers that we; /archives//html/Amps/1997-05/msg00264.html (10,520 bytes)
305. [AMPS] Experience with K2AW rectifiers anyone? (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Thu, 29 May 1997 12:26:42 +0000; Hi Carl, I always chuckle at some of your responses..... Since you are always so fuzzy-warm and helpful, let me ask you this. Besides the power rectifier design engineer at Motorola, and the semicond; /archives//html/Amps/1997-05/msg00267.html (14,306 bytes)
306. [AMPS] Power supplies for RF Amplifiers (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Thu, 29 May 1997 23:38:38 +0000; Hi Court, The reasons why? Six I can think of.... 1.) COST 2.) Reliability 3.) COST 4.) Noise and RFI 5.) Cost 6.) Ease of service With solid state PA's (they're coming faster than you might think n; /archives//html/Amps/1997-05/msg00283.html (8,581 bytes)
307. [AMPS] microwave ovens (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Thu, 29 May 1997 23:38:39 +0000; Wrong. Some people just make stuff up to try to upset other people George. If you read carefully enough, you'll figure out who does that on a regular basis. They are very good rectifier blocks Georg; /archives//html/Amps/1997-05/msg00284.html (8,876 bytes)
308. [AMPS] Heathkit SB-200 parts ???? (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Sat, 31 May 1997 11:22:55 +0000; Hi Osten, circuit coils I believe the Ameritron coils for the AL-1200, 1500, and 82 will fit. Count the turns and ask for one with the same or more turns and the mounting clip. Initially they used th; /archives//html/Amps/1997-05/msg00300.html (7,926 bytes)
309. [AMPS] Band Switch Heath SB-1000 (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Sun, 27 Apr 1997 19:12:42 +0000; Hi Phil, I appreciate your technical contributions, but I respectfully disagree with some of your comments or observations. The washer reduces the voltage gradient around the terminal for the 160 pad; /archives//html/Amps/1997-04/msg00437.html (13,185 bytes)
310. [AMPS] Band Switch Heath SB-1000 (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Mon, 28 Apr 1997 10:41:52 +0000; Adding cathode degeneration is a requirement, if the exciter is capable of the power levels you mention. ALC will not cure the problem, because ALC is traditionally too slow to limit leading edges o; /archives//html/Amps/1997-04/msg00441.html (15,925 bytes)
311. [AMPS] Re: Globars (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Mon, 28 Apr 1997 10:41:53 +0000; . Just so you have an idea of the actual cost, new 50 watt energy absorbing resistors are about $7.00 each from the original manufacturer. It might be a good idea to check amplifier manufacturers for; /archives//html/Amps/1997-04/msg00442.html (7,395 bytes)
312. [AMPS] Band Switch Heath SB-1000 (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Mon, 28 Apr 1997 16:49:45 +0000; The Heath plate padding capacitor is rated at 3.9 amperes at 1 MHz (page 4 of HEC's catalog), that's 936 ohms and the peak voltage is about 5100 volts. All low value HT series caps are voltage limit; /archives//html/Amps/1997-04/msg00451.html (12,549 bytes)
313. [AMPS] Switches and padding caps (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Tue, 29 Apr 1997 11:34:43 +0000; Hi Carl, There may be some confusion about the names of switch configurations. There is the slang we use and the names the switch manufacturers use. Switch contacts are manufactured in two basic type; /archives//html/Amps/1997-04/msg00457.html (8,655 bytes)

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