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1. [Amps] Parasitic Resistors (score: 1): Author: "" <dcoffman@iquest.net>; Date: Wed, 28 Jun 2006 08:33:20 -0400; Hello Gentlemen, With the preferred carbon composition resistors becoming hard to get, what type of resistors are the preferred type for use in a parasitic supressor? Thanks, Doug - N9XTF ___________; /archives//html/Amps/2006-06/msg00549.html (6,199 bytes)
2. Re: [Amps] Parasitic Resistors (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Wed, 28 Jun 2006 14:58:41 +0200 (CEST); Doug asked: The answer almost depends on what religion you are................ I like the big Carborundum types, if you can get them. Others like nichrome wire, or metal film or carbon film or.......; /archives//html/Amps/2006-06/msg00550.html (7,250 bytes)
3. Re: [Amps] Parasitic Resistors (score: 1): Author: "" <dcoffman@iquest.net>; Date: Wed, 28 Jun 2006 09:11:29 -0400; Peter, I had used some metal film that RF Parts sells as non-inductive 'flame proof'. When you get to talking to them, the 'engineer' will tell you that they are slightly inductive. I am curious if '; /archives//html/Amps/2006-06/msg00552.html (7,478 bytes)
4. Re: [Amps] Parasitic Resistors (score: 1): Author: Steve Thompson <g8gsq@eltac.co.uk>; Date: Wed, 28 Jun 2006 16:01:50 +0100; Almost certainly not. I've just measured a 100R 3W metal film resistor with 6mm (.25") leads at each end (Corning FP series). It shows as having 4nH inductance in series with 102R resistive - that's; /archives//html/Amps/2006-06/msg00566.html (7,835 bytes)
5. Re: [Amps] Parasitic Resistors (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Wed, 28 Jun 2006 11:53:52 -0400; It depends on the resistor, but I would not use them. In many cases they are too inductive. Most parasitics in tubes like the 3-500Z actually occur up around 180-200MHz. The exact frequency varies w; /archives//html/Amps/2006-06/msg00576.html (8,050 bytes)
6. Re: [Amps] Parasitic Resistors (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Wed, 28 Jun 2006 11:58:19 -0400; Metal compositions for light duty. Ohmite type OX and OY Carbon compositions like glo-bars for those big illegal amps. ....... if one is needed at all. 73 Tom _______________________________________; /archives//html/Amps/2006-06/msg00577.html (7,651 bytes)
7. Re: [Amps] Parasitic Resistors (score: 1): Author: Bill Turner <dezrat@copper.net>; Date: Wed, 28 Jun 2006 08:58:59 -0700; ORIGINAL MESSAGE: -- REPLY SEPARATOR -- I recommend the kind AG6K, Rich, sells on his website. The price is right, order as few or as many as you like and they will do the job. He sells the resistors; /archives//html/Amps/2006-06/msg00578.html (8,073 bytes)
8. Re: [Amps] Parasitic Resistors (score: 1): Author: R L Measures <r@somis.org>; Date: Wed, 28 Jun 2006 08:05:26 -0700; Every R in this universe has L. If its conductive film is not spiraled, a 3W MOF resistor has about 11nH plus the lead L. . R L MEASURES, AG6K. 805-386-3734 r@somis.org ______________________________; /archives//html/Amps/2006-06/msg00587.html (9,298 bytes)
9. Re: [Amps] Parasitic Resistors (score: 1): Author: R L Measures <r@somis.org>; Date: Wed, 28 Jun 2006 09:55:54 -0700; Globar resistors are carbon comp? _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2006-06/msg00589.html (8,283 bytes)
10. Re: [Amps] Parasitic Resistors (score: 1): Author: R L Measures <r@somis.org>; Date: Wed, 28 Jun 2006 10:11:31 -0700; Some are, some are not. To see what the construction is like, scrape of the paint and see if the MOF spirals or is mostly straight. A Matsushita (Panasonic) 100-ohm 3W-rated MOF resistor has c. 11nH; /archives//html/Amps/2006-06/msg00590.html (9,418 bytes)

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