Search String: Display: Description: Sort:

Results:

References: [ +from:mikewate@gmail.com: 104 ]

Total 104 documents matching your query.

81. Re: [Amps] Link to the Ugly Amp (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Wed, 2 Dec 2015 14:17:28 -0600
Do you have a photo of the inside of those amps? Betcha mine is uglier, if you look past the front panel! www.w0btu.com/833C_linear_amplifier.html . Mine even has PLYWOOD in it! ;-) www.w0btu.com/fil
/archives//html/Amps/2015-12/msg00009.html (7,301 bytes)

82. Re: [Amps] WOW! (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Mon, 28 Mar 2016 16:12:23 -0500
That's the parasitic suppressor. ;-) Looks more like an audio amp to me. And note the blue gas glow. I wonder if the filament is good? I guess his excuse to any buyer for it not working will be "I to
/archives//html/Amps/2016-03/msg00045.html (8,745 bytes)

83. Re: [Amps] "Conventional" current flow (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Tue, 1 Nov 2016 18:56:00 -0500
Hi Jim, I have always had great respect for your education, knowledge, technical ability, and workmanship on your many amplifier projects. However, --polarity and Ben Franklin's polarity error aside-
/archives//html/Amps/2016-11/msg00013.html (11,335 bytes)

84. Re: [Amps] "Conventional" current flow (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Wed, 16 Nov 2016 21:15:09 -0600
I just have one more question. Before I ask it, I need to make clear that my previous questions were based solely on current flow in vacuum tubes. Not wires, not semiconductors, etc. ONLY vacuum tube
/archives//html/Amps/2016-11/msg00053.html (8,551 bytes)

85. Re: [Amps] "Conventional" current flow (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sat, 19 Nov 2016 13:50:19 -0600
Hi Jim, Ok, I *finally* get it!!! I thought that you were stating that there is a literal, simultaneous flow of other particles moving in the opposite direction. And it just dawned on me that the ide
/archives//html/Amps/2016-11/msg00062.html (9,373 bytes)

86. Re: [Amps] "Conventional" current flow (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sat, 19 Nov 2016 14:54:39 -0600
Hi Bill, I appreciate your points of view, and I partially agree. However, there are many useful real inventions that might never have been, save for very advanced mathematical models. That's why (fo
/archives//html/Amps/2016-11/msg00065.html (10,283 bytes)

87. Re: [Amps] "Conventional" current flow (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sat, 19 Nov 2016 15:46:33 -0600
One or two others asked that early in this thread, Cathy. The answer is no, and you can go back and read the long explanation. :-) 73, Mike www.w0btu.com _____________________________________________
/archives//html/Amps/2016-11/msg00067.html (9,104 bytes)

88. Re: [Amps] "Conventional" current flow (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sat, 19 Nov 2016 17:44:20 -0600
That is one of the most fascinating shows that I have ever watched! I viewed it several times. 73 Mike www.w0btu.com _______________________________________________ Amps mailing list Amps@contesting.
/archives//html/Amps/2016-11/msg00071.html (9,970 bytes)

89. Re: [Amps] "Conventional" current flow (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Mon, 21 Nov 2016 10:36:56 -0600
I was following this story from the beginning. What really jumped out at me is that they had already predicted the shape of the chirp's waveform years before (with a mathematical model, of course)! A
/archives//html/Amps/2016-11/msg00099.html (10,026 bytes)

90. Re: [Amps] SB-220 update and gettering (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sat, 26 Nov 2016 14:20:50 -0600
Here is an excellent method of gettering tubes, including the 3-500Z. www.w8ji.com/gettering_tubes_al572b_al80b.htm There are many other related and useful pages there. 73, Mike www.w0btu.com _______
/archives//html/Amps/2016-11/msg00132.html (6,765 bytes)

91. Re: [Amps] SB-220 update and gettering (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sat, 26 Nov 2016 18:10:44 -0600
I don't remember the details, but the 3-500Z has several getters. Some are activated with just the filament; others need the anode to glow a bright red or orange, AND for a specified minimum amount o
/archives//html/Amps/2016-11/msg00136.html (8,708 bytes)

92. Re: [Amps] Amps] SB-220 update & gettering (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sun, 27 Nov 2016 14:51:43 -0600
Rob is exactly right. Tubes have failed even with regular use because they were never periodically run hot enough. A well-known case in point was a commercial broadcast transmitter with a 3-500Z driv
/archives//html/Amps/2016-11/msg00152.html (8,336 bytes)

93. Re: [Amps] Amps Digest, Vol 167, Issue 38 (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Tue, 29 Nov 2016 16:44:31 -0600
*Surely you don't mean the anodes are almost white-hot, do you? That's far** too hot!* 73, Mike www.w0btu.com same amp as a SB-220) the dull red in the 3-500's turn towards white. ___________________
/archives//html/Amps/2016-11/msg00163.html (7,091 bytes)

94. Re: [Amps] "Conventional" current flow (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Fri, 2 Dec 2016 10:52:52 -0600
Thank you for your comments, Al. But in an amplifier's vacuum tubes (as Jim, myself, and others discussed earlier in this thread), are charges moving from anode to cathode opposite the flow of electr
/archives//html/Amps/2016-12/msg00014.html (9,065 bytes)

95. Re: [Amps] "Conventional" current flow (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sat, 3 Dec 2016 19:10:27 -0600
This is interesting. "Spooky action at a distance"? :-) 73, Mike The description of the electrons in a metal, or anywhere else, is quantum mechanical. ... the amazing thing about the electron is that
/archives//html/Amps/2016-12/msg00037.html (9,984 bytes)

96. Re: [Amps] Stock up on tubes? (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Mon, 5 Dec 2016 17:25:04 -0600
Good answers. Question on #2 below: Is the power transformer in the SB-220 conservatively rated, as the one in the SB-200 is? Some hams have replaced the 572-Bs with GI-7BTs, and the SB-200's transfo
/archives//html/Amps/2016-12/msg00104.html (10,335 bytes)

97. Re: [Amps] triode vs tetrode (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Mon, 5 Dec 2016 18:20:45 -0600
Well, it worked in my 813 GG amplifier. But don't count on being able to do that with very many tetrodes. Among other things, you have to be careful not to exceed the ratings for both grids. 73, Mike
/archives//html/Amps/2016-12/msg00107.html (7,762 bytes)

98. Re: [Amps] triode vs tetrode (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Mon, 5 Dec 2016 19:04:24 -0600
If that's the amp design I'm thinking about (4CX250B), it's a terrible design. It was notorious for splatter and distortion. With 813s, maybe it was OK. 73, Mike www.w0btu.com _______________________
/archives//html/Amps/2016-12/msg00111.html (7,461 bytes)

99. Re: [Amps] COST OF AMPS/RIGS (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Thu, 8 Dec 2016 12:03:12 -0600
Yup! I started out with just an RF ammeter. WWII surplus from Fair Radio. 73, Mike www.w0btu.com _______________________________________________ Amps mailing list Amps@contesting.com http://lists.con
/archives//html/Amps/2016-12/msg00195.html (8,163 bytes)

100. Re: [Amps] Line voltage high. (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sat, 10 Dec 2016 14:14:43 -0600
I thought he said the problem was a bad voltmeter. If not, your advice about the resistor is perfect. :-) 73, Mike www.w0btu.com _______________________________________________ Amps mailing list Amps
/archives//html/Amps/2016-12/msg00251.html (8,122 bytes)

Current List: 81 - 100
Page: [1] [2] [3] [4] [5] [6]
This search system is powered by Namazu