Search String: Display: Description: Sort:

Results:

References: [ +from:craxd@engineer.com: 79 ]

Total 79 documents matching your query.

61. [Amps] Filter design software (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Fri, 22 Jul 2005 04:58:29 -0500
Yesterday I ran across a filter design software that I have to say is a good one for a change. It also prints the schematic and parts list for the filter. Now it is a Windows only app as it's coded i
/archives//html/Amps/2005-07/msg00251.html (7,173 bytes)

62. Re: [Amps] Mobile amps (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Fri, 22 Jul 2005 09:27:29 -0500
Dan, Yes, they are really the same wide-banded amps that have been around for years and the same as in the Motorola app notes. Most use the 2SC2879 transistors. The only thing is for them to be linea
/archives//html/Amps/2005-07/msg00257.html (10,701 bytes)

63. Re: [Amps] Mobile amps (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Fri, 22 Jul 2005 12:56:05 -0500
Carl, They're pretty much all the same, or the ones that use dead bug construction except for a few. There is the following brands I know of that I've seen the innards of that were ok to convert. Bel
/archives//html/Amps/2005-07/msg00261.html (14,605 bytes)

64. Re: [Amps] Mobile amps (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Fri, 22 Jul 2005 17:03:16 -0500
Bill, Your right, I did forget the RM Italy amps. I personally wouldn't recommend one, theyr'e pure junk. They use self tapping screws to hold the RF transistors down. What happens is when they run t
/archives//html/Amps/2005-07/msg00268.html (20,552 bytes)

65. Re: [Amps] Alpha 78 rebuild, some questions. (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Sat, 23 Jul 2005 12:23:32 -0500
Martin, You mentioned having to solder the 10 meter lead back to the switch or coil. Regular 60/40 rosin core solder will work here since that is strap material and a heavy connection. Just make sure
/archives//html/Amps/2005-07/msg00279.html (11,379 bytes)

66. Re: [Amps] solder vs. High temp. (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Sat, 23 Jul 2005 17:38:52 -0500
Carl, True silver solder is really a type of brazing with a temperature anywhere around 1140 Deg F to 1450 Deg F. Under brazing, the filler metal actual starts to melt into the material it's being us
/archives//html/Amps/2005-07/msg00283.html (9,235 bytes)

67. Re: [Amps] solder vs. High temp. (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Sat, 23 Jul 2005 18:21:43 -0500
Colin, You have to watch these charts as this ones shows the melting point of solder. It's different than the working or bonding temperature which is higher. Remember when they spoke of the solder us
/archives//html/Amps/2005-07/msg00285.html (8,880 bytes)

68. Re: [Amps] Transformer core shorted to secondary winding?? (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Sat, 23 Jul 2005 20:14:05 -0500
Bill, It definately has a high-ohm short in the secondary. They've wound the primary on the outside which I dont like to do. That way the secondaries leaking to the core instead of the primary. If th
/archives//html/Amps/2005-07/msg00287.html (8,974 bytes)

69. Re: [Amps] Transformer core shorted to secondary winding?? (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Sat, 23 Jul 2005 21:06:26 -0500
Sam, If it were capacitance causing this, the voltage on either side of the secondary would give an equal voltage reading wouldn't it? Best, Will -- __________________________________________________
/archives//html/Amps/2005-07/msg00289.html (11,546 bytes)

70. Re: [Amps] ALS-500 Problem (was Mobile amps) (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Sun, 24 Jul 2005 18:39:28 -0500
Joe, I wonder why the 260 showed that or was it just set on the wrong ohms scale? I have about 3 of those 260's here and absolutely swear by them. They have to be the toughest analog VOM and most acc
/archives//html/Amps/2005-07/msg00300.html (18,622 bytes)

71. Re: [Amps] Transformer core shorted to secondary winding?? (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Sun, 24 Jul 2005 18:41:16 -0500
Rich, Check you mail, I replied off list. Best, Will -- ___________________________________________________________ Sign-up for Ads Free at Mail.com http://promo.mail.com/adsfreejump.htm ____________
/archives//html/Amps/2005-07/msg00301.html (12,637 bytes)

72. [Amps] Soldering standards (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Sun, 24 Jul 2005 21:01:55 -0500
All, Most know that the art of soldering should have some set standards of pass or fail. What I use, and try to adhere to, is the government standards, in partucular NASA standards. Below is some lin
/archives//html/Amps/2005-07/msg00303.html (9,227 bytes)

73. Re: [Amps] Alpha 78 rebuild, some answers and more questions (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Mon, 25 Jul 2005 11:25:16 -0500
Martin, See below, I doubt you'll have any problems. The only ones that do are the ones who switch from a large 10 meter coil to a smaller solid wire wire coil for the lower bands. On these, the wire
/archives//html/Amps/2005-07/msg00308.html (13,554 bytes)

74. Re: [Amps] solder vs. High temp. (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Mon, 25 Jul 2005 22:13:18 -0500
Peter, Yes, I went and looked that up, it is considered a brazing product. They add cadmium to change the silvers melting point. There's another alloy without cadmium which melts a shade higher in te
/archives//html/Amps/2005-07/msg00311.html (8,846 bytes)

75. Re: [Amps] WRB: Hipot (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Mon, 25 Jul 2005 22:17:59 -0500
Barrie, I bought mine off eBay for about $45 and is a 5 kV made by Associated Research. If your an eBay member, do a search for Hipot, or Hypot as it's spelled two ways by manufacturers. I've seen Hi
/archives//html/Amps/2005-07/msg00312.html (6,916 bytes)

76. [Amps] Amp question (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Mon, 25 Jul 2005 23:57:31 -0500
All, Ok, most know how splitter/combiner transformers work in solid state amps. Here's the question, how can an amp work using two sets of push-pull amps, having a conventional combiner, but not have
/archives//html/Amps/2005-07/msg00313.html (7,466 bytes)

77. Re: [Amps] Amp question (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Tue, 26 Jul 2005 05:23:39 -0500
Karl, Please see below; By looking over the schematic of this amp, everything looks the same as one for 180 degrees phase difference except it being minus a splitter in the front end. To me if it wer
/archives//html/Amps/2005-07/msg00315.html (12,437 bytes)

78. Re: [Amps] "Solder" to brass? (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Tue, 26 Jul 2005 07:26:32 -0500
Steve, Are you refering to the wiper or brush that makes contact with the stator? If so, it's a piece of spring type material, or is in the ones I've seen. I'd have to see a pic of it and where it br
/archives//html/Amps/2005-07/msg00318.html (7,691 bytes)

79. Re: [Amps] solder vs. High temp. (score: 1)
Author: "Will Matney" <craxd@engineer.com>
Date: Tue, 26 Jul 2005 07:36:22 -0500
Your correct, I don't know why I said pure. The 1150 deg. stuff is an alloy with a high silver content, I think about 50% or so. The hard stuff on the other end with a melting point around 1450 deg F
/archives//html/Amps/2005-07/msg00319.html (10,895 bytes)

Current List: 61 - 79
Page: [1] [2] [3] [4]
This search system is powered by Namazu