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21. [AMPS] Network analysis of suppressors (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Fri, 03 Mar 2000 07:01:15 -0600; What was the condition of the resistors BEFORE the big bang, Rich? Unless you or anyone measured them right before, we have no we of knowing do we? The fact that they are bad when measured is circums; /archives//html/Amps/2000-03/msg00093.html (10,175 bytes)
22. [AMPS] 2nd harmonic pumped parasitic (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Fri, 03 Mar 2000 07:05:20 -0600; Well, Ian, I think one possible explanation is that the suppressor resistors go bad with time. The heating effects caused by the tube, circulating current, etc. greatly shortens the lifetime of the r; /archives//html/Amps/2000-03/msg00094.html (8,741 bytes)
23. [AMPS] FAILURE OF PARASITIC RESISTORS IN AL-811X AMPLIFIER (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 06 Mar 2000 20:08:51 -0600; I'll take responsibility cause I said it! OK, perhaps I didn't make myself clear! If your amplifier has been tested to be stable over a variety of load conditions, etc. it won't suddenly break into o; /archives//html/Amps/2000-03/msg00302.html (11,827 bytes)
24. [AMPS] Network analysis of suppressors (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 06 Mar 2000 20:13:12 -0600; This also flies in the face of understanding how resistors work. A 2 Watt resistor can handle a peak power of many times that of 2 Watts. With the milliseconds of time that Rich is talking about, the; /archives//html/Amps/2000-03/msg00303.html (10,360 bytes)
25. [AMPS] poor science? (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 06 Mar 2000 20:29:12 -0600; When I was working on my 4-1000A amplifier a couple of years ago, I was convinced that Rich's theory was right. I got into fights with many on the reflector defending Rich. Yet when I read his litera; /archives//html/Amps/2000-03/msg00305.html (9,500 bytes)
26. [AMPS] Re: Poor science (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 06 Mar 2000 20:34:48 -0600; Terry, What happened is that you changed something in your circuit. Yes! The cabinet of the amp is part of the circuit. Some sort of resonance was created by lifting the cover and hence your oscillat; /archives//html/Amps/2000-03/msg00306.html (10,882 bytes)
27. [AMPS] Re: Poor science (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 06 Mar 2000 20:53:43 -0600; My fault. I didn't read your post carefully enough! Well, if they are not keyed, I have no idea. That is weird for sure. If the tubes are in cutoff they should not conduct nor oscillate. Hmmm.... Per; /archives//html/Amps/2000-03/msg00308.html (9,801 bytes)
28. [AMPS] Re: Poor science (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 06 Mar 2000 20:37:35 -0600; forbid rest That is not exactly what I said or meant. If an amplifier is unstable it will oscillate. How the oscillation starts can either be thermally (which is how most oscillators start) or by som; /archives//html/Amps/2000-03/msg00317.html (10,031 bytes)
29. [AMPS] FAILURE OF PARASITIC RESISTORS IN AL-811X AMPLIFIER (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 06 Mar 2000 21:59:21 -0600; Others along with myself have successfully built 4-1000A amplifiers that run at high KV with no suppressor resistors. Nope, not magic, just clever designs. 73, Jon KE9NA -- Jon Ogden KE9NA Member: AR; /archives//html/Amps/2000-03/msg00318.html (9,605 bytes)
30. [AMPS] Oscillation (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 06 Mar 2000 22:01:40 -0600; As far as I am concerned, if you are able to do that, then you have a stable amplifier. I would put the tank coil on the 10 meter position. It may not make any difference, but that's what I did. Bett; /archives//html/Amps/2000-03/msg00319.html (7,686 bytes)
31. [AMPS] FAILURE OF PARASITIC RESISTORS IN AL-811X AMPLIFIER (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 06 Mar 2000 22:37:24 -0600; Rather than try to describe it, why not go to my website, look at it and then ask questions. I've described what I did multiple times on AMPS. But every time I've described it to you Rich, you just i; /archives//html/Amps/2000-03/msg00327.html (9,831 bytes)
32. [AMPS] Power Handling of Resistors (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 06 Mar 2000 23:37:21 -0600; Some of you questioned my technical sanity when I suggested dumping some VHF power into a 5 Watt resistor and seeing if it can handle the power. My original quote: Well, I decided to put my money whe; /archives//html/Amps/2000-03/msg00330.html (10,329 bytes)
33. [AMPS] Power Handling of Resistors (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 07 Mar 2000 06:17:47 -0600; Of course it is specious! I'll admit that. But the fact is that parts just don't instantaneously blow up due to a transient event. That is my whole point. Rich's events are nearly step functions. Act; /archives//html/Amps/2000-03/msg00353.html (9,622 bytes)
34. [AMPS] Power Handling of Resistors (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 07 Mar 2000 11:29:32 -0600; Blah! Blah! Blah! OK, You are right. I am just an ingorant son of a bitch who doesn't know anything. Forigve me oh great one. I thought that a 160 Watt amp and a multi-kilowatt amp put out about the; /archives//html/Amps/2000-03/msg00390.html (10,976 bytes)
35. [AMPS] Power Handling of Resistors (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 07 Mar 2000 11:41:03 -0600; Dave also cannot read. I didn't just key 160 Watts for 500 msec. I keyed 160 Watts for 2 seconds. So following your train of thought Peter: 160 W for 2 sec 640 W for 500 msec 6.4 kW for 50 msec 64 kW; /archives//html/Amps/2000-03/msg00393.html (10,066 bytes)
36. [AMPS] Stability of Carbon Resistors (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 07 Mar 2000 18:34:25 -0600; One of my points EXACTLY!!! And it will do it without showing signs of external damage. The carbon resistors will change in value due to the heating effects not parasitics. And in a power amplifier w; /archives//html/Amps/2000-03/msg00414.html (7,854 bytes)
37. SV: [AMPS] Power Handling of Resistors (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 07 Mar 2000 18:47:51 -0600; I don't know how to write more clearly. Sorry. I believe that parasitic resistors that are found to be bad are damaged by heating over long periods of time and not by parasitic oscillations as Rich s; /archives//html/Amps/2000-03/msg00415.html (11,065 bytes)
38. [AMPS] Power Handling of Resistors (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 07 Mar 2000 22:24:00 -0600; The amount of energy stored in the capacitor banks of a power supply that has a voltage of 4000 Volts and 32 uF of capacitance is: J = (C*E^2)/2 source: Radio Handbook by Bill Orr 23rd ed. pg 2-7 C i; /archives//html/Amps/2000-03/msg00423.html (10,077 bytes)
39. [AMPS] Power Handling of Resistors (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 08 Mar 2000 09:01:32 -0600; I would also like to know how DC voltage from a DC power supply can pass through a DC blocking capacitor and destroy the bandswitch. If you want to introduce fundamental RF voltages into the equation; /archives//html/Amps/2000-03/msg00468.html (10,367 bytes)
40. [AMPS] Power Handling of Resistors (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 08 Mar 2000 17:12:12 -0600; Sorry. I did not. We are back to my original point at long last. Rich's claim is that the most destructive source that will wipe out components in the tank circuit is a VHF parasitic oscillation. Tha; /archives//html/Amps/2000-03/msg00484.html (11,186 bytes)

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