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61. Re: [Amps] grid fuses (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Sat, 22 Jul 2006 16:25:01 -0400; Actually both of you are mixing applications and very different systems. Contact bias or space charge biasing is NOT the same as grid leak biasing. Grid leak biasing is dependent on grid current to; /archives//html/Amps/2006-07/msg00894.html (10,320 bytes)
62. Re: [Amps] grid fuses (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sat, 22 Jul 2006 22:17:58 -0400; No, this actually forms the basis for grid leak biasing where the grid collects electrons. In a grid leak circuit, those electrons are fed to a capacitor to ground which charges up with those same el; /archives//html/Amps/2006-07/msg00904.html (13,092 bytes)
63. Re: [Amps] grid fuses (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Sat, 22 Jul 2006 23:04:56 -0400; Well, I can copy and post authoritative text in several peer reviewed textbooks written by well known authors that disagrees with your claims Will...but I doubt it will do much good. I guess we will; /archives//html/Amps/2006-07/msg00907.html (8,540 bytes)
64. Re: [Amps] grid fuses (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sun, 23 Jul 2006 00:56:01 -0400; Tom, I hate to come out and say this, but if you don't think this is the way grid leak bias was derived and used in the past, your just plainly quite wrong. It's been used in transmitters and receive; /archives//html/Amps/2006-07/msg00911.html (11,040 bytes)
65. Re: [Amps] grid fuses (score: 1): Author: R L Measures <r@somis.org>; Date: Sat, 22 Jul 2006 13:51:20 -0700; Mr. Rauch -- No one said that contact bias is suitable for actual bias. IMO, electron contact effect will negatively bias a floating grid in a 12AX7 the same way it does a 3-500Z grid. At this point; /archives//html/Amps/2006-07/msg00927.html (9,614 bytes)
66. Re: [Amps] grid fuses (score: 1): Author: "carl s." <carlseye@tampabay.rr.com>; Date: Sun, 23 Jul 2006 10:28:37 -0400; All this discussuion about grid fuses and such is very interesting !! The comment about one man pressuring manufacturers to use the *floating* grid concept leaves me wondering about all the amps usin; /archives//html/Amps/2006-07/msg00933.html (8,732 bytes)
67. Re: [Amps] grid fuses (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Sun, 23 Jul 2006 17:21:19 +0200 (CEST); Carl, My feeling is that 572Bs are a bit close to the edge anyway once you get to 28MHz.. They have very long grid leads, especially when compared with a 3-500Z. Even a copper strap to ground from th; /archives//html/Amps/2006-07/msg00937.html (8,368 bytes)
68. Re: [Amps] grid fuses (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Sun, 23 Jul 2006 12:24:28 -0400; Carl, The problem with that is, as Peter points out, the single grid lead inside the tube is very thin and very long. This severely limits anything we can do outside the tube, since that connection; /archives//html/Amps/2006-07/msg00943.html (8,760 bytes)
69. Re: [Amps] grid fuses (score: 1): Author: R L Measures <r@somis.org>; Date: Sun, 23 Jul 2006 17:12:07 -0700; A floating grid won't get the job done in Class AB2 cathode-driven because the cathode's electrons must flow through the grid and return back to the cathode in order for the anode to conduct substant; /archives//html/Amps/2006-07/msg00991.html (10,615 bytes)
70. Re: [Amps] grid fuses (score: 1): Author: Chris Howard <chris@yipyap.com>; Date: Mon, 24 Jul 2006 08:31:02 -0600; Cool! Please do so. Chris _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2006-07/msg01013.html (9,620 bytes)
71. Re: [Amps] grid fuses (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Mon, 24 Jul 2006 10:43:33 -0400; Chris, I already posted it a couple day ago and posted the link on this site. I was up at 1AM doing that, so I remember it pretty well. http://www.w8ji.com/fusing_and_floating_grids.htm 73 Tom _____; /archives//html/Amps/2006-07/msg01016.html (10,027 bytes)
72. Re: [Amps] grid fuses (score: 1): Author: Chris Howard <chris@yipyap.com>; Date: Mon, 24 Jul 2006 09:05:23 -0600; Oh, OK, sorry I miss-understood. I will make note of those authors/titles and keep an eye out for those books. Chris _______________________________________________ Amps mailing list Amps@contesting.; /archives//html/Amps/2006-07/msg01019.html (10,468 bytes)
73. Re: [Amps] grid fuses (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Mon, 24 Jul 2006 12:29:05 -0400; Chris, Tom evidentily thinks I was confused when definately, I was not. Never once did I say one should use contact bias. Matter of fact, if I recall, I said it shouldn't be used in one of my posts.; /archives//html/Amps/2006-07/msg01022.html (11,533 bytes)

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