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61. Re: [Amps] Eimac 15E (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Mon, 16 Apr 2007 11:17:10 -0600
you Bob: I have several 833s, but they are not small! Last time I built a transmitter using a pair of large glass tubes (450TH), it ended up being 7' tall and 3' by 3'. (Due to a slight miscalculatio
/archives//html/Amps/2007-04/msg00171.html (7,956 bytes)

62. Re: [Amps] Surface Cleaning Tarnished Aluminum (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Tue, 24 Apr 2007 14:02:00 -0600
aluminum controlled. polishing kid, This technique would raise the capacitance as well, wouldn't it? Barrie Then you rough surface wouldn't matter. to re-anodized in _________________________________
/archives//html/Amps/2007-04/msg00266.html (12,421 bytes)

63. Re: [Amps] LYE (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Tue, 24 Apr 2007 14:14:14 -0600
Larry: That's nowhere near the concentration I use. I'll have to look it up, but I think I use about ten times that amount of sodium hydroxide for that amount of water. You must start with cold water
/archives//html/Amps/2007-04/msg00267.html (9,099 bytes)

64. Re: [Amps] Power factor and choke vs resonant-choke input supplies (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Thu, 10 May 2007 13:45:41 -0600
Peter: Resonant-chokes may be placed in the negative lead? Also, could you elaborate on the "close to it" resonance? I have a largish power supply, using a Peter Dahl resonant-choke/capacitor combina
/archives//html/Amps/2007-05/msg00108.html (9,639 bytes)

65. Re: [Amps] Power factor and choke vs resonant-choke input supplies (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Thu, 10 May 2007 15:19:47 -0600
-- Original Message -- From: "Harold Mandel" <hmandel@barantelecom.com> To: "Barrie Smith" <barrie@centric.net>; <g3rzp@g3rzp.wanadoo.co.uk>; "Borislav Trifonov" <bdt@shaw.ca> Cc: <amps@contesting.co
/archives//html/Amps/2007-05/msg00111.html (12,099 bytes)

66. Re: [Amps] Power factor and choke vs resonant-choke input supplies (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Fri, 11 May 2007 13:11:45 -0600
Good Show, Jim! Barrie _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2007-05/msg00123.html (10,105 bytes)

67. Re: [Amps] high current switching supply (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Sun, 15 Jul 2007 13:16:19 -0600
Bill: I don't see, in any of the literature, a weight listed for the unit. Since my application would be mounted on a tower, to power a 1296 SS amplifier, weight is important to me. Have an idea how
/archives//html/Amps/2007-07/msg00248.html (9,690 bytes)

68. [Amps] Low Pass Filter (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Thu, 27 Sep 2007 11:36:33 -0600
Carl: You mentioned using low pass filters on 6M because of your location. I'm in much the same situation here. Could you describe these filters? Are they commercial units? 73, Barrie, W7ALW ________
/archives//html/Amps/2007-09/msg00417.html (6,217 bytes)

69. Re: [Amps] Testing 8874s (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Fri, 2 Nov 2007 10:18:09 -0700
shack I have a high-pot tester that I've used for testing vacuum caps. I'd like to use it to test various, mostly glass, tubes, as well. However, I don't have a clue as to what the voltage used shou
/archives//html/Amps/2007-11/msg00020.html (8,546 bytes)

70. Re: [Amps] Amp Parts Needed (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Sat, 3 Nov 2007 11:00:53 -0700
Bob: Check Max Gain Systems. They may have the cap. I bought several 20 KV shaft-couplers from them not too long ago very inexpensively. Barrie, W7ALW Also please ____________________________________
/archives//html/Amps/2007-11/msg00042.html (7,490 bytes)

71. [Amps] Non-Inductive Resistors (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Sun, 11 Nov 2007 11:12:55 -0700
This thread about 50 ohm loads reminds me that recently, while searching for large resistors for a power supply project, I came upon the skeleton of an old mil-surplus power supply that contained sev
/archives//html/Amps/2007-11/msg00151.html (6,880 bytes)

72. Re: [Amps] 8877 plate voltage (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Thu, 15 Nov 2007 11:21:19 -0700
Rick: I run my HB 8877 6M amp at 4200 volts, which drops to 3800 volts under load. No problems in several years. Rumors abound regarding fellows who are running 5 KV, and more, on 8877s. 73, Barrie,
/archives//html/Amps/2007-11/msg00208.html (7,075 bytes)

73. [Amps] QRO For Sale (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Sat, 17 Nov 2007 17:53:52 -0700
Since it does not appear that I will be able to build a 6M amp around this tube, I have the following for sale: One newly rebuilt, never used 8171, with new, never used PWD filament transformer, chim
/archives//html/Amps/2007-11/msg00242.html (6,407 bytes)

74. Re: [Amps] questions about hi pot tester (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Thu, 3 Jan 2008 13:45:17 -0700
Commander! I was in much the same position, in that I had gathered almost all that I needed to build a hipot, but the filter caps kept getting away, especially price-wise. I ended up buying a commerc
/archives//html/Amps/2008-01/msg00041.html (8,835 bytes)

75. Re: [Amps] Oil-caps delating 2/3 ratings? (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Thu, 6 Mar 2008 11:02:26 -0700
Han: Totally by accident I ran a pair of these caps at 6500 volts for several minutes. Nothing bad happened. I still use that pair of caps in power supply that runs 4200 volts no-load. As they say,
/archives//html/Amps/2008-03/msg00052.html (8,612 bytes)

76. Re: [Amps] Power transformer for 600 watt rig (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Tue, 18 Mar 2008 12:55:06 -0700
of Speaking of tuned-chokes: I've built several power supplies over a many year period using this method. Some worked well, some didn't. I've always used the method that I thought was the only metho
/archives//html/Amps/2008-03/msg00170.html (8,815 bytes)

77. Re: [Amps] Power transformer for 600 watt rig (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Wed, 19 Mar 2008 15:20:09 -0700
What if . . . one had a choke (swinging, or otherwise) input AND lots of capacitance? 73, Barrie, W7ALW _______________________________________________ Amps mailing list Amps@contesting.com http://li
/archives//html/Amps/2008-03/msg00182.html (8,309 bytes)

78. [Amps] Buck Boost (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Mon, 28 Apr 2008 10:12:18 -0700
I'd like to increase the output voltage about 10% on a HV plate transformer using the boost method. Does anyone know what penalties I may encounter using this proceedure? Since there's no free lunch,
/archives//html/Amps/2008-04/msg00308.html (7,121 bytes)

79. Re: [Amps] Buck Boost (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Mon, 28 Apr 2008 13:55:41 -0700
-- Original Message -- From: "jeremy-ca" <km1h@jeremy.mv.com> To: "Robert Groh" <rgroh@swbell.net>; "Patrick Egloff" <pegloff@gmail.com>; "Barrie Smith" <barrie@centric.net> Cc: <Amps@contesting.com>
/archives//html/Amps/2008-04/msg00313.html (13,292 bytes)

80. [Amps] Disc Ceramic Markings (score: 1)
Author: "Barrie Smith" <barrie@centric.net>
Date: Sun, 17 Aug 2008 14:30:18 -0600
I'm about to start on a construction project. Looking through my stash of disc ceramics I came upon about 20 units that have a confusing (to me) marking. The body color is a dull orange, there is a s
/archives//html/Amps/2008-08/msg00110.html (6,932 bytes)

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