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References: [ +from:Wlfuqu00@pop.uky.edu: 110 ]

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81. [AMPS] Class AB1 Grounded Grid? (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Fri, 16 Jul 1999 12:04:49 -0400 (EDT); For other reasons I will be modifying my GG 4-1000A amplifier so that I can apply bias to the grids. Have any of you operated a 4-1000A class AB1 as a grounded grid amplifier? Is it more linear than; /archives//html/Amps/1999-07/msg00326.html (7,369 bytes)
82. [AMPS] Semtech CSPH18 (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Mon, 19 Jul 1999 08:33:51 -0400 (EDT); I need data on the Semtech CSPH18 diode. It seems to be a very high voltage fast recovery diode of some type. 73 Bill wa4lav William L. Fuqua III P.E. E-mail WLFUQU00@POP.UKY.EDU Phone (606) 257-4155; /archives//html/Amps/1999-07/msg00360.html (6,777 bytes)
83. [AMPS] Low Noise 100w 100KHz amplifier (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Tue, 4 May 1999 13:47:17 -0400 (EDT); I need a source for a Low Noise 100W 100KHz CW amplifier for NMR research. Any ideas?? Gain must be stable as well. 73 Bill wa4lav William L. Fuqua III P.E. E-mail WLFUQU00@POP.UKY.EDU Phone (606) 25; /archives//html/Amps/1999-05/msg00039.html (6,924 bytes)
84. [AMPS] Brightest Bottles (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Wed, 19 May 1999 09:05:25 -0400 (EDT); In the 60's a ham friend of mine was trying different tubes in grounded grid operation. Remember then we were limited to 1KW plate input power of all the stages contributing power to the antenna. So; /archives//html/Amps/1999-05/msg00221.html (8,425 bytes)
85. [AMPS] specs for MDA-1333H rectifiers (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Wed, 19 May 1999 09:26:15 -0400 (EDT); I can't find my 70's Motorola books. Does anyone have the specs for the MDA-1333H rectifiers? These are potted modules about a foot long and 2 inches on a side. I have a dozen of these and a 3 phase; /archives//html/Amps/1999-05/msg00222.html (6,898 bytes)
86. [AMPS] Solid State Amp Problem (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Thu, 20 May 1999 10:59:47 -0400 (EDT); This reminds me of a problem I was having with a solid state amplifier output in a system we use for research here at U. of Ky . It was being modulated at a low frequency and I tracked it down to the; /archives//html/Amps/1999-05/msg00243.html (8,827 bytes)
87. [AMPS] FCC Actions at Dayton (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Fri, 21 May 1999 11:18:28 -0400 (EDT); limit the CB guys. Well, as we've all heard on the reflector before, some of the best homebrew amplifier builders these days are mud ducks. It just goes to prove that laws aren't what keeps people f; /archives//html/Amps/1999-05/msg00263.html (10,476 bytes)
88. [AMPS] Re: full break-in (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Mon, 19 Apr 1999 11:03:55 -0400 (EDT); I don't hear much about the old tube TR swiches. Surely one could be used with a small lower power relay on the transceiver end for full QSK. Have to time things such that the tranceiver doesn't outp; /archives//html/Amps/1999-04/msg00351.html (9,177 bytes)
89. [AMPS] ripple current (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Fri, 5 Mar 1999 16:49:37 -0500 (EST); My catalog has a "Allowable ripple current vs. Ambient temperature" chart for the GQ series cap. Temperature +45 +60 +70 +85 +105 Coeffecient 2.47 2.37 2.17 1.67 1.00 So at 85 degrees the maximum all; /archives//html/Amps/1999-03/msg00114.html (8,741 bytes)
90. [AMPS] ripple current (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Mon, 8 Mar 1999 07:45:30 -0500 (EST); Wish I had time to look into it more, but a book I have "Industrial Electronics Handbook" by Cockrell states that RMS ripple current should be square root of 2 for 100 percent rectifier efficiency. W; /archives//html/Amps/1999-03/msg00163.html (10,041 bytes)
91. [AMPS] Re: Tuned Input for Clipperton (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Fri, 12 Mar 1999 07:59:01 -0500 (EST); Why NPO? With Q=2 Bandwidth (-3db) of the tuned circuit is F/Q = .5*F or 50% 10% change in capacitance would only produce 5% shift in frequency. One advantage in using higher voltage capacitors is t; /archives//html/Amps/1999-03/msg00246.html (9,052 bytes)
92. [AMPS] Re: Tuned Input for Clipperton (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Fri, 12 Mar 1999 08:01:33 -0500 (EST); I did fail to point out that it could be that NPO's are more desireable because they are usually physically larger than the cheaper caps. 73 Bill William L. Fuqua III P.E. E-mail WLFUQU00@POP.UKY.EDU; /archives//html/Amps/1999-03/msg00247.html (9,124 bytes)
93. [AMPS] Need Plasma Generator schematic (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Mon, 22 Mar 1999 09:44:51 -0500 (EST); I need a schematic for the RF cabinet for an ICP/6000 Perkin-Elmer Atomic Absorption (AAS),Inductively Coupled Plasma-Optical Emission Spectrometer. The RF portion of this is a 2KW 13.56 MHz exciter; /archives//html/Amps/1999-03/msg00550.html (7,763 bytes)
94. [AMPS] Grid driven triodes (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Tue, 30 Mar 1999 08:34:10 -0500 (EST); Is there anyone on this list using Common Cathode triode amplifiers? Some day after I get current projects completed I want to build a 450TL Push Pull amp. I know there were Short wave broadcast vers; /archives//html/Amps/1999-03/msg00685.html (8,945 bytes)
95. [AMPS] Grid driven triodes (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Wed, 31 Mar 1999 08:38:01 -0500 (EST); The real problem is that in band switching a common-cathode triode amplifier it is important to keep the output circuit balanced so that neutralization may be maintained. Has anyone seen a band switc; /archives//html/Amps/1999-03/msg00716.html (8,835 bytes)
96. [AMPS] Metering a GG amp (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Tue, 2 Feb 1999 08:18:45 -0500 (EST); A friend of mine had built an amplifier and his plate current meter would read very little current when the transmitter was keyed. In fact the current would decrease some times. He showed me the sche; /archives//html/Amps/1999-02/msg00055.html (7,914 bytes)
97. [AMPS] Cantenna Dummy loads (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Wed, 3 Feb 1999 09:10:49 -0500 (EST); The Cantenna dummy loads just can't take 1.5 Kw for very long. I was wondering if anyone has tried to cool one of these. Either by running water thru the can in a coil of copper tubing or maybe even; /archives//html/Amps/1999-02/msg00094.html (8,406 bytes)
98. [AMPS] Cantenna Dummy loads (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Wed, 3 Feb 1999 14:15:25 -0500 (EST); The water cooling coils have the advantage that convection currents of oil should be formed as the warmer oil rises around the resistor and flows downward at the outer region of the can thru the cool; /archives//html/Amps/1999-02/msg00112.html (9,258 bytes)
99. [AMPS] Radiation cooling (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Fri, 5 Feb 1999 09:00:49 -0500 (EST); In vacuum tubes and incandescent lights the filaments are reach a temperature where there is a equilibrium condition of power in and power out. That is to say that the temperature of the filament is; /archives//html/Amps/1999-02/msg00169.html (8,425 bytes)
100. [AMPS] Radiation cooling (score: 1): Author: wlfuqu00@pop.uky.edu (William L. Fuqua III); Date: Fri, 5 Feb 1999 13:00:54 -0500 (EST); It seem that the decrease in power transfer from the filament would be only 6 percent or so with an increase in plate temperature from 300 degrees to 1000 degrees Kelvin. This would translate to not; /archives//html/Amps/1999-02/msg00179.html (7,166 bytes)

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