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61. [AMPS] Re: Parasitics (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 15 May 98 09:45:47 -0500; Ok, this is true. You are right. The reactive components do the job of transforming impedances. I wasn't thinking straight. But my 50 Ohm load is on the OUTPUT of that transforming network, not in t; /archives//html/Amps/1998-05/msg00263.html (10,393 bytes)
62. [AMPS] Re: Parasitics (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 15 May 98 09:52:55 -0500; Ok, thanks for this one. Now I understand, Ian. Ignore my last one. I hadn't sat down and worked the math. Shame on me. I appreciate the time you took to show all that. I see what you are saying now; /archives//html/Amps/1998-05/msg00264.html (9,145 bytes)
63. [AMPS] Re: Parasitics (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 15 May 98 16:23:14 -0500; Well, that is a good point! I would just like to see a detailed circuit analysis of potential VHF/UHF voltages in the output pi-net. 73, Jon KE9NA -- Jon Ogden jono@webspun.com www.qsl.net/ke9na "A; /archives//html/Amps/1998-05/msg00269.html (9,196 bytes)
64. [AMPS] Re: Parasitics (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 15 May 98 16:29:23 -0500; Rich, I don't know. I can't find the flaw in his argument. When you do series to parallel transformations, you can add in additional reactances and transform them back. I remember doing this when cr; /archives//html/Amps/1998-05/msg00270.html (10,130 bytes)
65. [AMPS] Re: Parasitics (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 15 May 98 19:10:08 -0500; I think that's pretty cool! It shows that Rich's supressor idea *DOES* indeed work. In a sense you are getting extra resistance out of the inductor. And that extra gives you a lower Rp which means l; /archives//html/Amps/1998-05/msg00272.html (10,109 bytes)
66. [AMPS] Re: Parasitics (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sat, 16 May 98 15:31:45 -0500; This isn't meant to be a dig at Arlen; just the truth: Arlen went off about how people like me should just know stuff from their education. Then he went and posted incorrect formulas for Q in parall; /archives//html/Amps/1998-05/msg00286.html (9,144 bytes)
67. [AMPS] Re: Parasitics (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sat, 16 May 98 15:37:22 -0500; Sorry Carl, I was a Senior Engineer when I left my engineering job. Please get your facts straight. Also, tube or solid state: IT DOESN'T MAKE ANY DIFFERENCE! Somehow, I think that you think less of; /archives//html/Amps/1998-05/msg00287.html (10,266 bytes)
68. [AMPS] Re: Parasitics (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sat, 16 May 98 15:41:00 -0500; He is correct, Rich. Sorry. He hasn't made any illegal moves. A pi network Tank is a resonant LC circuit consisting of both parallel and series resonances. You can transform a pi-net into an equival; /archives//html/Amps/1998-05/msg00289.html (9,606 bytes)
69. [AMPS] network analysis rules! (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sat, 16 May 98 15:46:12 -0500; Great post, George. I agree totally with your analysis. I feel silly that I didn't see the forest for the trees before Ian's step by step post. To quote Homer Simpson, "DOH!" 73, Jon KE9NA -- Jon Og; /archives//html/Amps/1998-05/msg00290.html (7,344 bytes)
70. [AMPS] network analysis rules! (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sat, 16 May 98 15:59:00 -0500; The series to parallel conversions that we have been discussing apply most definitely to AC circuits. The whole fact that you calculate an inductor to have a certain reactance means that it is opera; /archives//html/Amps/1998-05/msg00291.html (8,042 bytes)
71. [AMPS] Gassy Tubes and Gas Arcs (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sat, 16 May 98 16:05:22 -0500; Question for some of you tube experts: John Lyles post explained how gasses liberated from the plate in a tube can produce gas arcs inside the tube and casue serious damage. Fine and dandy. Understoo; /archives//html/Amps/1998-05/msg00292.html (8,468 bytes)
72. [AMPS] Choke Question (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sat, 16 May 98 17:22:57 -0500; Ok perhaps another dumb question, but hey...humor me.... Is it possible sometimes for the bias chokes in an amp to squeal or his a little bit under high voltage? I am noticing this today while finali; /archives//html/Amps/1998-05/msg00294.html (7,078 bytes)
73. [AMPS] Gassy Tubes and Gas Arcs (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sat, 16 May 98 18:04:49 -0500; Well, you have a good point... The glow is around the top part of the tube: around the anode and the upper part of the glass envelope. I always thought that nice blue glow was gas. When you say betw; /archives//html/Amps/1998-05/msg00299.html (8,708 bytes)
74. [AMPS] Re: Parasitics (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sat, 16 May 98 18:07:01 -0500; Well, what does that have to do with my statement above, Rich? Yes, it's resonant at the frequency that I tune it up to. I don't understand what my doing this would prove or accomplish other than te; /archives//html/Amps/1998-05/msg00300.html (9,332 bytes)
75. [AMPS] Gassy Tubes and Gas Arcs (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sat, 16 May 98 18:08:08 -0500; In the evacuated space??? Isn't the whole tube evacuated?? Please explain... 73, Jon KE9NA -- Jon Ogden KE9NA http://www.qsl.net/ke9na "A life lived in fear is a life half lived." -- FAQ on WWW: htt; /archives//html/Amps/1998-05/msg00301.html (8,664 bytes)
76. [AMPS] Re: Parasitics (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sun, 17 May 98 23:02:08 -0500; Ok...that's possible, Rich. But still what does that have to do with parallel and series conversions of RL and RLC networks?? What does that disprove about network theory found in every sophmore EE; /archives//html/Amps/1998-05/msg00310.html (9,628 bytes)
77. [AMPS] Gassy Tubes and Gas Arcs (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sun, 17 May 98 23:03:46 -0500; So then if all of the tube isn't evacuated, none of it is evacuated. But you said that one blue glow is from electron beams striking the envelope. The other is in the "evacuated space." How do I kno; /archives//html/Amps/1998-05/msg00311.html (9,199 bytes)
78. [AMPS] Gassy Tubes and Gas Arcs (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Sun, 17 May 98 23:07:19 -0500; Thanks for the info guys....Thought my tubes were getting gassy. 73, Jon KE9NA -- Jon Ogden KE9NA http://www.qsl.net/ke9na "A life lived in fear is a life half lived." -- FAQ on WWW: http://www.cont; /archives//html/Amps/1998-05/msg00312.html (9,396 bytes)
79. [AMPS] Gassy Tubes and Gas Arcs (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Mon, 18 May 98 08:51:26 -0500; Right. In other words, the entire tube inside the glass is "evacuated" space. So the glow from the beams striking the glass envelope is in the evacuated space. Other people have pointed out that if; /archives//html/Amps/1998-05/msg00315.html (9,825 bytes)
80. [AMPS] Clarification and correction (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Mon, 18 May 98 09:44:28 -0500; I guess that feeding the harmonic back in the correct phase would probably reduce IM because of the 2F term in the math. It would be an interesting way to do it. I don't think I have seen IMD reduct; /archives//html/Amps/1998-05/msg00318.html (7,407 bytes)

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