Mail Archive Search: <+from:gdaught6@leland.Stanford.EDU>

Results:

References: [ +from:gdaught6@leland.Stanford.EDU: 139 ]

Total 139 documents matching your query.

81. [AMPS] HV xfmr and autoranging meters (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Thu, 18 Jun 1998 12:02:57 +0008; hi all steve wrote... yes! i've had one oscillate at about 1Hz or so! it might need nichrome test leads!! ;>) [note the smiley thing!!] a reasonable solution, but watch out turning it off! remember t; /archives//html/Amps/1998-06/msg00204.html (7,549 bytes)
82. [AMPS] Re: BIG amps! (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Fri, 26 Jun 1998 15:08:59 +0008; hi john, i always enjoy reading your posts about *real* amps, tetrodes where even the handles have handles! <snip> i'd LOVE to know if the RF output would be the same (close?) if you used the SAME sc; /archives//html/Amps/1998-06/msg00246.html (7,130 bytes)
83. [AMPS] Re: carbon tracks (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Tue, 5 May 1998 08:52:56 +0008; hi all, i've only seen a couple of these, but a question occurred to me: where does the carbon come from? are the black tracks made by rapid decomposition of atmospheric CO2? i doubt it, but i don't; /archives//html/Amps/1998-05/msg00048.html (8,854 bytes)
84. [AMPS] Re: there it is again! (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Mon, 11 May 1998 10:10:13 +0008; hi all, there it is again! voltage gain is *NOT* (ever!) mu x Rp (although the word "essentially" might mean "proportional to the product of") i promise i'll never point this out again! 73, George T.; /archives//html/Amps/1998-05/msg00157.html (7,026 bytes)
85. [AMPS] filament decoupling for RF (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Thu, 14 May 1998 11:08:02 +0008; hi rich et al., not always! it depends on the phase of the feedback that results. in fact, it is very easy to build an oscillator that has the cathode away from (RF) ground! but... rich and i both li; /archives//html/Amps/1998-05/msg00234.html (8,316 bytes)
86. [AMPS] cathode degeneration (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Fri, 15 May 1998 08:38:21 +0008; hi carl, you wrote... and that danger is very real! that's what prompted my original post on the subject, which said... 73, George T. Daughters, K6GT -- FAQ on WWW: http://www.contesting.com/ampfaq.h; /archives//html/Amps/1998-05/msg00265.html (8,068 bytes)
87. [AMPS] network analysis rules! (score: 1): Author: gdaught6@leland.Stanford.EDU (gdaught6@leland.Stanford.EDU); Date: Sat, 16 May 1998 11:16:48 +0000; hi all, i'm not an EE, i'm only a lowly physicist, so forgive me a very simple-minded approach to what seems to be a problem to some subscribers on this reflector. i'd like to find the resistance (Re; /archives//html/Amps/1998-05/msg00282.html (9,623 bytes)
88. [AMPS] 3CX800 in MLA2500? (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Tue, 19 May 1998 08:08:07 +0008; hi dan, IMHO, a pair would be "right out!" the two 8875's have a COMBINED plate dissipation of 800w, just right for a SINGLE 3cx800. two of them would be likely to lure the operator into trying for t; /archives//html/Amps/1998-05/msg00354.html (7,485 bytes)
89. [AMPS] Re: (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Wed, 20 May 1998 09:03:49 +0008; hi all, it looks like a snap to me! i've got no resistance ("0"), a pure reactance (+j100 ohms). i want to go straight out the +imaginary axis from 100 ohms to 100k ohms. so, i add an inductor in ser; /archives//html/Amps/1998-05/msg00390.html (8,973 bytes)
90. [AMPS] RE: huh? (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Thu, 21 May 1998 15:29:11 +0008; to which i responded, to which rich responded, huh? what 100 ohm R? what 75nH? i'll repeat my statement... " i've got no resistance ("0"), a pure reactance (+j100 ohms)." no 100 ohm R! zero "R"! i'm; /archives//html/Amps/1998-05/msg00443.html (9,235 bytes)
91. [AMPS] smoke (score: 1): Author: gdaught6@leland.Stanford.EDU (gdaught6@leland.Stanford.EDU); Date: Mon, 25 May 1998 12:08:23 +0000; steve, this is an old "theory" that hasn't really been formalized into a proper scientific theory (with equations and the like) but which has long been recognized to be a truism. 73, k6gt George T. D; /archives//html/Amps/1998-05/msg00567.html (7,147 bytes)
92. [AMPS] Re: parasites coexisting with oscillation? (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Fri, 17 Apr 1998 14:05:53 +0008; hi all, john wrote... <snip> well, i had a tv-horizontal output tube amp once (tetrode: home brew) that sat quietly and quiescently with no drive. it was not an oscillator. when i applied 10m drive,; /archives//html/Amps/1998-04/msg00138.html (9,311 bytes)
93. [AMPS] Anode current vs cathode current... (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Tue, 3 Mar 1998 08:44:14 +0008; hi all, there's often a simple practical reason for measuring cathode current instead of anode current. the cathode is usually at (or very close to) ground potential, so the metering components can a; /archives//html/Amps/1998-03/msg00028.html (8,378 bytes)
94. [AMPS] Anode current vs cathode current... (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Tue, 3 Mar 1998 13:43:33 +0008; hi all, you bet it can! and then the ammeter is close to ground. this is a good thing, but it requires a bit of thinking about *NOT* grounding filter capacitor cans, etc. a really great way is to bui; /archives//html/Amps/1998-03/msg00033.html (8,207 bytes)
95. [AMPS] Re: Input Impedance... units?? (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Tue, 24 Mar 1998 08:27:58 +0008; hi all, this has the correct units (ohms) at least and this has the units of potential (volts), not impedance! 73, George T. Daughters, K6GT -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submi; /archives//html/Amps/1998-03/msg00391.html (7,964 bytes)
96. [AMPS] Single supply -Multi-amo help (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Thu, 29 Jan 1998 12:04:05 +0008; hi rich, jordan, et al. great question! great answer. yep. it's best to "remove" the screen voltage by grounding (or returning to ground through a low-value resistor) the screen. that is, don't let; /archives//html/Amps/1998-01/msg00123.html (8,050 bytes)
97. [AMPS] bounced mail for km1h (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Sat, 31 Jan 1998 18:37:59 +0800; sorry for the bandwidth group! carl, km1h. i sent you a message which bounced. please e-mail me direct with your e-mail address. thanks to all for your patience! 73, k6gt gdaught6@leland.stanford.edu; /archives//html/Amps/1998-01/msg00134.html (6,803 bytes)
98. [AMPS] Re: 8875 = 4cx400 ? (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Tue, 23 Dec 1997 08:25:29 +0008; hi larry and all, no, i don't think so. the 8875 is a triode; the 4cx400 is a tetrode! 73, George T. Daughters, K6GT -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.; /archives//html/Amps/1997-12/msg00353.html (7,351 bytes)
99. [AMPS] Re: 8875 = 4cx400 ? (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Wed, 24 Dec 1997 17:14:59 +0800; hi again, several years ago eimac published an amateur radio application note about this mode of operation (AS-1). the bottom line was ... big glass tetrodes like 4-125, 4-250, 4-400, and 4-1000 work; /archives//html/Amps/1997-12/msg00360.html (7,811 bytes)
100. [AMPS] RE: 3-600z (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Tue, 4 Nov 1997 04:23:48 +0800; <snip> maybe (probably) so. if not, as you point out, the filament transformers will have to be changed. but... if the 3-500z's are being run a bit too hard, (although i doubt this has *ever* happene; /archives//html/Amps/1997-11/msg00031.html (7,635 bytes)

Current List: 81 - 100
Page: [1] [2] [3] [4] [5] [6] [7]