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Total 18 documents matching your query.

1. [AMPS] Re: 6m amp blocking caps (score: 1): Author: w7xu@dtgnet.com (w7xu); Date: Tue, 04 Dec 2001 19:00:47 +0000; Hi, Speaking of blocking capacitors (and at the risk of starting a range war)-- My 6m amp, which uses an 8877 and a pi network, seemed to suffer from the same problem as Lance's -- I could get 1500 W; /archives//html/Amps/2001-12/msg00084.html (12,001 bytes)
2. [AMPS] Re: 6m amp blocking caps (score: 1): Author: 2@vc.net (2); Date: Tue, 4 Dec 2001 12:49:45 -0800; When DC blocking caps are paralleled, a parallel-resonance is created between the capacitors in the RF output path. The additional resonance may be problematic. W6PO circuit, to 100 to - R. L. Measu; /archives//html/Amps/2001-12/msg00085.html (13,416 bytes)
3. [AMPS] Re: 6m amp blocking caps (score: 1): Author: Ian White, G3SEK" <g3sek@ifwtech.com (Ian White, G3SEK); Date: Wed, 5 Dec 2001 08:22:14 +0000; This is only relevant when the two capacitors are very *different*. You then get a parallel resonance, between the lower capacitance and the self-inductance of the higher-value one. For example, if y; /archives//html/Amps/2001-12/msg00091.html (9,427 bytes)
4. [AMPS] Re: 6m amp blocking caps (score: 1): Author: 2@vc.net (2); Date: Wed, 5 Dec 2001 04:43:40 -0800; With two doorkob caps in parallel of equal value, I got a sharp dip at c. 80MHz. I could repear rhe experiment if you like, Ian. // Why not? Is the sharp dip I see on the dipmeter a pseudo-dip? - R.; /archives//html/Amps/2001-12/msg00095.html (9,820 bytes)
5. [AMPS] Re: 6m amp blocking caps (score: 1): Author: Ian White, G3SEK" <g3sek@ifwtech.com (Ian White, G3SEK); Date: Wed, 5 Dec 2001 12:59:50 +0000; [...] Certainly it's real. When you connect the two capacitors together at each end, you make a series-resonant loop. Guessing at values, two 1000pF caps, in series with a total of 8nH lead inductanc; /archives//html/Amps/2001-12/msg00100.html (10,248 bytes)
6. [AMPS] Re: 6m amp blocking caps (score: 1): Author: 2@vc.net (2); Date: Wed, 5 Dec 2001 06:02:03 -0800; // The issue at hand is using two, paralleled capacitors as a DC blocker. My position is one DC blocking cap with more current capability is a better choice // So Mr. Rauch was in error about the MF; /archives//html/Amps/2001-12/msg00104.html (11,072 bytes)
7. [AMPS] Re: 6m amp blocking caps (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 5 Dec 2001 09:45:21 -0500; I see the same old "grid dip meter tells all" argument is going on! Good luck Ian! Actually you can't tell a thing about whether it is a "good desirable dip" , something meaningless, or a potential; /archives//html/Amps/2001-12/msg00106.html (9,613 bytes)
8. [AMPS] Re: 6m amp blocking caps (score: 1): Author: 2@vc.net (2); Date: Wed, 5 Dec 2001 07:54:20 -0800; // Didn't Tom say that the dipper option for the MFJ antenna analyzer is disfunctional? - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/; /archives//html/Amps/2001-12/msg00112.html (10,083 bytes)
9. [AMPS] Re: 6m amp blocking caps (score: 1): Author: Ian White, G3SEK" <g3sek@ifwtech.com (Ian White, G3SEK); Date: Wed, 5 Dec 2001 16:05:01 +0000; I had written: Not unless the current capacity is more than two times greater than each of the two paralleled caps. Since I don't know exactly what you mean, I wouldn't care to comment. Not at all -; /archives//html/Amps/2001-12/msg00119.html (11,181 bytes)
10. [AMPS] Re: 6m amp blocking caps (score: 1): Author: 2@vc.net (2); Date: Wed, 5 Dec 2001 13:29:58 -0800; // Do two equal-capacitance paralleled caps have a resonance? // Mr. Rauch stated that the dipmeter adapter does not work correctly. // In my experiences 50, 57, and 58 Series doorknob caps have a r; /archives//html/Amps/2001-12/msg00122.html (11,632 bytes)
11. [AMPS] Re: 6m amp blocking caps (score: 1): Author: Ian White, G3SEK" <g3sek@ifwtech.com (Ian White, G3SEK); Date: Wed, 5 Dec 2001 22:54:09 +0000; They do not develop a new parallel resonance due to being connected together. And later: Certainly - these are all *series* resonances with their self-inductance (plus the inductance of the wire you; /archives//html/Amps/2001-12/msg00138.html (10,210 bytes)
12. [AMPS] Re: 6m amp blocking caps (score: 1): Author: 2@vc.net (2); Date: Thu, 6 Dec 2001 06:38:16 -0800; \ This does not appear to be the result when one experimentally parallels two, equal value doorknob caps with straps and checks for resonance with a dipmeter. \ semi-agreed \ Certainly - for finding; /archives//html/Amps/2001-12/msg00145.html (11,005 bytes)
13. [AMPS] Re: 6m amp blocking caps (score: 1): Author: Ian White, G3SEK" <g3sek@ifwtech.com (Ian White, G3SEK); Date: Thu, 6 Dec 2001 16:42:34 +0000; If anyone other than Rich feels that I have not explained clearly enough in pervious postings why this is *not* a parallel resonance, I will try again. -- 73 from Ian G3SEK Editor, 'The VHF/UHF DX Bo; /archives//html/Amps/2001-12/msg00150.html (9,264 bytes)
14. [AMPS] Re: 6m amp blocking caps (score: 1): Author: jstrohm@texas.net (Jim Strohm); Date: Thu, 6 Dec 2001 20:38:49 -0600; It's _NOT_ a parallel resonance in the sense that you have a capacitive value in parallel with an inductive value. You have two non-equal lumped values in parallel. Whip out Thenevin's theorem to sol; /archives//html/Amps/2001-12/msg00152.html (9,882 bytes)
15. [AMPS] Re: 6m amp blocking caps (score: 1): Author: jeff@wa1hco.mv.com (jeff millar); Date: Thu, 6 Dec 2001 22:39:36 -0500; I agree the dipper measures series resonance. You might explain how to find a real parallel resonance in two caps. Nothing comes to mind here...after 30 seconds, anyway. jeff, wa1hco -- FAQ on WWW: h; /archives//html/Amps/2001-12/msg00153.html (10,017 bytes)
16. [AMPS] Re: 6m amp blocking caps (score: 1): Author: 2@vc.net (2); Date: Thu, 6 Dec 2001 20:31:46 -0800; In a 2-component, parallel circuit, the components are in series with each other and they are in series with the L of the conductors used to connect them. I see the two, equal values of C and two eq; /archives//html/Amps/2001-12/msg00155.html (10,022 bytes)
17. [AMPS] Re: 6m amp blocking caps (score: 1): Author: Ian White, G3SEK" <g3sek@ifwtech.com (Ian White, G3SEK); Date: Fri, 7 Dec 2001 07:28:06 +0000; I already did: connect a 50 ohm resistor in parallel, and sweep the SWR analyzer for the lowest SWR. Details are in the MFJ analyzer manuals, which are downloadable. -- 73 from Ian G3SEK Editor, 'The; /archives//html/Amps/2001-12/msg00165.html (8,656 bytes)
18. [AMPS] Re: 6m amp blocking caps (score: 1): Author: 2@vc.net (2); Date: Sun, 9 Dec 2001 00:30:14 -0800; // It tells you that an additional resonance is in series with the anode circuit. // To simulate the condition caused by paralling two blocking caps, they need to be measured in paralleled. // A gar; /archives//html/Amps/2001-12/msg00177.html (10,412 bytes)

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