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221. [AMPS] TL-922 Filament Transformer Protection (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 7 Jun 99 16:09:42 -0500; Oh, sure. But my question is not wether or not it happens. But as Tom pointed out, the filter action of the input pi-network will limit the response of the spark pulse. Plus how large an amplitude i; /archives//html/Amps/1999-06/msg00219.html (10,552 bytes)
222. [AMPS] parasitic fantasia (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 7 Jun 99 16:16:47 -0500; I wanted to reply to this but I wanted time to think it through first. The gird in a tube is essentially analogous to the gate in a FET and the Anode is analgous to the Drain and Cathode the source.; /archives//html/Amps/1999-06/msg00221.html (9,439 bytes)
223. [AMPS] TL-922 Filament Transformer Protection (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 7 Jun 99 17:12:13 -0500; Rich, you are avoiding answering the issue directly. The question was: Does the spark that is created by hotswitching the input relay have enough amplitude to create a sufficient signal at the input; /archives//html/Amps/1999-06/msg00226.html (10,549 bytes)
224. [AMPS] TL-922 Filament Transformer Protection (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 7 Jun 99 17:15:26 -0500; 100 C was an example. It doesn't matter if it is 50 C or 30 C or 2000 C. I wan't using it as literal. The fact is that supressor resistors operate at elevated temperatures ABOVE 25 C. Their dissipat; /archives//html/Amps/1999-06/msg00228.html (10,428 bytes)
225. [AMPS] parasitic fantasia (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 7 Jun 1999 19:02:13 -0500; Thanks Tom, for the well thought out note. Stability IS a very complex issue and is not easily solved by any one method. I guess in my case for my amp the added coil in the anode lead that I used pr; /archives//html/Amps/1999-06/msg00234.html (9,365 bytes)
226. [AMPS] TL-922 Filament Transformer Protection (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 7 Jun 1999 21:36:35 -0500; Could have been an HF oscillation for all I know as I didn't have a freq counter at the time to measure them. I guess I could have used my MFJ-259 but didn't think about that until now! Needless to; /archives//html/Amps/1999-06/msg00241.html (10,432 bytes)
227. [AMPS] TL-922 Filament Transformer Protection (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 8 Jun 99 10:55:13 -0500; Did you take into account the fact that resistor dissipation goes down with increasing temperature? 73, Jon KE9NA -- The Second Amendment is NOT about duck hunting! Jon Ogden jono@enteract.com www.q; /archives//html/Amps/1999-06/msg00260.html (10,153 bytes)
228. [AMPS] TL-922 Filament Transformer Protection (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 8 Jun 99 10:57:51 -0500; Rich believes that VHF RF currents at the frequency of anode resonance are always flowing, even in a stable amplifier. His view is in order to suppress these currents you must split them evenly betw; /archives//html/Amps/1999-06/msg00262.html (10,141 bytes)
229. [AMPS] slam tally (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 8 Jun 99 10:59:59 -0500; I must say that I used to feel that way about Tom, too. However, I must say in Tom's defense that he has had some very good and very well thought out arguments. Wether you choose to agree or not wit; /archives//html/Amps/1999-06/msg00265.html (9,204 bytes)
230. [AMPS] TL-922 Filament Transformer Protection (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 8 Jun 99 14:29:33 -0500; Bull, Rich. Pure Bull! I sell resistors for a living. High power resistors at that. RESISTOR DISSIPATION DROPS AS TEMPERATURE INCREASES!!! That is a fact. There is a temperature at which a resistors; /archives//html/Amps/1999-06/msg00282.html (11,381 bytes)
231. [AMPS] TL-922 Filament Transformer Protection (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 9 Jun 99 08:34:56 -0500; It's yet another case of Rich splitting hairs to try to make others look bad. I guess I gotta be exactly 100% precise in anything I say otherwise, Rich will parse it and disect it and split every la; /archives//html/Amps/1999-06/msg00290.html (10,280 bytes)
232. [AMPS] slam tally (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 9 Jun 99 08:40:40 -0500; Rich, I guess the entire world is wrong and you are right regarding the level that Buzz had while at Eimac. Did you ever stop to think that perhaps the person you spoke to in personnel gave you inco; /archives//html/Amps/1999-06/msg00291.html (9,382 bytes)
233. [AMPS] TL-922 Filament Transformer Protection (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 9 Jun 99 08:45:41 -0500; Rich, no comment on this. Read the quote below from my original post. You are a master at editing! So my statement still stands. If a resistor is rated at a dissipation of 10 Watts at room temperatu; /archives//html/Amps/1999-06/msg00292.html (10,570 bytes)
234. [AMPS] slam tally (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 9 Jun 1999 13:02:56 -0500; Actually, I've found a LOT of valuable stuff while dumpster diving in my lifetime: Let's see: A Macintosh (the stereo not the computer) amplifier that now sells for around $1200 at Dayton, an SX-62,; /archives//html/Amps/1999-06/msg00304.html (9,047 bytes)
235. [AMPS] 50-500 MHz in solid-state? (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Sun, 13 Jun 1999 09:32:11 -0500; Not sure. But is there some silly FCC rule that gets in the way because of the 6M limitations on amps? Or perhaps no one has thought of it. Oh well..... 73, Jon KE9NA -- Jon Ogden KE9NA http://www.q; /archives//html/Amps/1999-06/msg00410.html (7,930 bytes)
236. [AMPS] TL-922 Filament Transformer Protection (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 14 Jun 99 08:46:51 -0500; Hi Rich, I've never questioned your article or mentioned that in this debate. My point was strictly that I believe that resistors in parasitic suppressors fail not because of oscillations but becaus; /archives//html/Amps/1999-06/msg00428.html (9,878 bytes)
237. [AMPS] I wonder (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 14 Jun 99 08:46:56 -0500; David, Debate is a part of life. People have disagreements both technically and personally. One of the purposes of this reflector is to hammer this stuff out and learn from it. I have been on both s; /archives//html/Amps/1999-06/msg00429.html (7,750 bytes)
238. [AMPS] parasites prove it? (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 14 Jun 99 08:47:08 -0500; While this may have worked in those amplifiers, it did nothing in my 4-1K amp when I had the problem. 73, Jon KE9NA -- The Second Amendment is NOT about duck hunting! Jon Ogden jono@enteract.com www; /archives//html/Amps/1999-06/msg00430.html (8,309 bytes)
239. [AMPS] parasites prove it? (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 14 Jun 99 08:47:03 -0500; Hi Ian, Good idea. The problem with it though is that most absorber type material is designed for high UHF or microwave use. I suppose that absorber at HF could be manufactured but it might be kind; /archives//html/Amps/1999-06/msg00431.html (10,150 bytes)
240. [AMPS] Resistor Dissipation vs. Dissipation Ratings (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 16 Jun 1999 00:13:51 -0500; Thank you, Peter. Well put. I did all my damage to Rich's resistors on 10M and I was using it cause it is the worst case scenario. Here is an idea that I have to perhaps get a better handle on how h; /archives//html/Amps/1999-06/msg00468.html (9,903 bytes)

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