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Total 32 documents matching your query.

21. [Amps] screen grid current dropping (score: 1)
Author: "ka1mwp" <ka1mwp@comcast.net>
Date: Thu, 11 Jun 2009 18:33:29 -0400
Well, here is one I can't seem to figure out easily.. My GU-84b amp with 2100v plate, -65 on control grid, 365v on screen grid, have a meter monitoring the Screen current. I watch this current go fro
/archives//html/Amps/2009-06/msg00053.html (7,035 bytes)

22. [Amps] tank calculations - need input (score: 1)
Author: "ka1mwp" <ka1mwp@comcast.net>
Date: Sat, 17 Oct 2009 16:49:39 -0400
GU-84b based amp ? tetrode boards for control. OK so, working again on my amp, 2.3kv on plate, 350v (when ON) to G2 and G1 has -65v. I have well over 1 amp available for plate current if needed. Used
/archives//html/Amps/2009-10/msg00238.html (8,140 bytes)

23. Re: [Amps] tank calculations - need input (score: 1)
Author: "ka1mwp" <ka1mwp@comcast.net>
Date: Sat, 17 Oct 2009 19:10:28 -0400
Well, I can see turning it clockwise lowers the value...as I sit here and double check... Out is increasing value (CCW) it gets looser and opens the plates... ORIGINAL MESSAGE: REPLY: That's backward
/archives//html/Amps/2009-10/msg00241.html (7,764 bytes)

24. Re: [Amps] tank calculations - need input (score: 1)
Author: "ka1mwp" <ka1mwp@comcast.net>
Date: Sun, 18 Oct 2009 08:02:05 -0400
Comet CV05c - 650n/5 Hooked up to a GME LC200 inductance meter Watching the capacitance as I turn, not that it matters.. The issue is why does the amp need LOTS AND LOTS of capacitance :) That's back
/archives//html/Amps/2009-10/msg00243.html (9,692 bytes)

25. [Amps] tank calculations - need input (score: 1)
Author: "chuck" <ka1mwp@comcast.net>
Date: Mon, 19 Oct 2009 14:40:23 -0400
I'm going to move the inductance up into the low 7's tonight and see where C2 works. I'm sure a good look at a scope will also let me know whats going on, I may have something else Happening not bein
/archives//html/Amps/2009-10/msg00267.html (9,121 bytes)

26. [Amps] Ts-940s linear relay (score: 1)
Author: "chuck" <ka1mwp@comcast.net>
Date: Tue, 20 Oct 2009 08:13:08 -0400
does anyone know what the relay on the ts-940s will handle for current?? I have 12vdc at ~150ma and I THINK its too much...or should I say WAS! I'll make a circuit tonight to switch it but ahem!! it
/archives//html/Amps/2009-10/msg00277.html (6,733 bytes)

27. [Amps] cooked exciter - (score: 1)
Author: "chuck" <ka1mwp@comcast.net>
Date: Fri, 23 Oct 2009 13:49:18 -0400
Well, It looks like I cooked some other board in the TS-940s not the remote relay circuit. I thought I had to much current (150ma) going into the relay on the rig for keying the amp.. After a quick l
/archives//html/Amps/2009-10/msg00309.html (7,677 bytes)

28. [Amps] FS:transformer 220vin 60v, 350v 27v out (score: 1)
Author: "ka1mwp" <ka1mwp@comcast.net>
Date: Mon, 9 Nov 2009 18:27:16 -0500
As it states, I have a transformer I used previously for a few months. Its 220vac in 60vac at .1a, 350 vac .3a (if I remember correctly unloaded it was like 450) and 27at 5.0 for a filament supply. I
/archives//html/Amps/2009-11/msg00146.html (6,840 bytes)

29. [Amps] monitoring output - rf (score: 1)
Author: "chuck" <ka1mwp@comcast.net>
Date: Fri, 13 Nov 2009 07:52:05 -0500
I have a LM3915 based led bar graph I built, input of 2v full scale. I can adjust this to full scale 3v or so. What I want to do is monitor the output of the amp with it. I am looking at the same set
/archives//html/Amps/2009-11/msg00175.html (6,784 bytes)

30. [Amps] Fw: Peter Dahl transformers (score: 1)
Author: "ka1mwp" <ka1mwp@comcast.net>
Date: Mon, 11 Feb 2013 18:44:02 -0500
I go on and off this list several times a year, usually when I am looking for answers to stuff. I Just noticed this with Jeff, but for 12 years now I have been working with Chris at MagCap, both in a
/archives//html/Amps/2013-02/msg00093.html (8,689 bytes)

31. Re: [Amps] Fw: Peter Dahl transformers (score: 1)
Author: "ka1mwp" <ka1mwp@comcast.net>
Date: Wed, 13 Feb 2013 15:00:38 -0500
its a personal website, like I said its on the side :) I do what I can! you can also google my call. enjoy http://home.comcast.net/~ka1mwp/magcap.html _______________________________________________
/archives//html/Amps/2013-02/msg00108.html (7,448 bytes)

32. [Amps] to part out or to sell as whole (score: 1)
Author: "ka1mwp" <ka1mwp@comcast.net>
Date: Mon, 24 Feb 2014 08:01:34 -0500
I am considering selling my GU-84b based amp. Thoughts on either selling it whole or in pieces. the tube,socket, transformer, vacuum caps , tetrode boards all worth something. The case and associated
/archives//html/Amps/2014-02/msg00251.html (6,951 bytes)

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