Mic Kaczmarczik's TubeInformation - The Blue Guitar

More documents

Recommendations

Info

From postmaster@triodeel.com Thu Aug 12 11:45:11 CDT 1999 Article: 195512 of alt.guitar.amps Path: geraldo.cc.utexas.edu!cs.utexas.edu!news.maxwell.syr.edu!sunqbc.risq.qc.ca!novia!sequencer.newscene.com!not-for-mail From: Ned Carlson Newsgroups: alt.guitar.amps,rec.audio.tubes Subject: Re: NOS Tube stability Date: 12 Aug 1999 03:18:01 -0500 Organization: Triode Electronics Lines: 26 Message-ID: References: Reply-To: postmaster@triodeel.com X-Mailer: Mozilla 4.5 [en] (X11; I; Linux 2.0.36 i586) X-Accept-Language: en MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Xref: geraldo.cc.utexas.edu alt.guitar.amps:195512 rec.audio.tubes:133014 fiftywatt@yahoo.com wrote: > A respected amp tech friend of mine now tells me that these old stock > tubes still have unstable elements inside that are not inert and that > NOS tubes are not reliable and essentially deteriorate over time even > if they have never been used. Comments anyone? I think you answered your own question, your experience indicates otherwise, and you done seen & heard it yourself.This equates with my experience. I believe your amp tech friend is referring to thorium when he refers to "unstable elements". AFAIK, the types of tubes used in guitar amplifiers do not contain thorium. I've seen some really, really old (we're talking 30's & 40's stuff) tubes with a little layer of white sheen on the getter. This will only happen if there are gasses in the tube to react with the getter, whether the gasses in question were from the inside of the tube or migrated through the glass, I don't know. -- Ned Carlson Triode Electronics "where da tubes are!" 2225 W Roscoe Chicago, IL, 60618 USA ph 773-871-7459 fax 773-871-7938 12:30 to 8 PM CT, (1830-0200 UTC) 12:30-5 Sat, Closed Wed & Sun http://www.triodeel.com Back to JT30 Home
From ftom@netcom.com Mon Jun 26 21:11:15 CDT 1995 Article: 1974 of alt.guitar.amps Newsgroups: alt.guitar.amps Path: geraldo.cc.utexas.edu!cs.utexas.edu!news.sprintlink.net!noc.netcom.net!netcom.com!netcom10.netcom.com!ftom From: ftom@netcom.com (Tom May) Subject: Re: Phase splitters: new vs old In-Reply-To: mgarvin@panix.com's message of 25 Jun 1995 03:08:25 -0400 Message-ID: Sender: ftom@netcom10.netcom.com Organization: The Planet Eden References: Date: Mon, 26 Jun 1995 22:40:25 GMT Lines: 29 In article mgarvin@panix.com (Mark Garvin) writes: >There *is* something else, too. I've been hesitant to mention this >cause it's pretty obscure, but I've slowly been coming to accept it. >(Again, I haven't reproduced this--it's a long-term effect): >I understand that the higher DC path can let ionization/residual >charge buildup within the tube, which ionizes yet more of the >residual gases. The increased ionized gas compounds the effect >and it avalanches. The tube 'goes gassy' much earlier. >How's that for urban tube folklore? Probably true, tho. I thought that was the effect you were talking about all along. I quote from the RCA Receiving Tube Manual where this effect is described: "Also, the grid resistor of the following stage should not be too large, the actual maximum value being dependent on the particular tube type. This precaution is necessary because all tubes contain minute amounts of residual gas which cause a minute flow of current through the grid resistor. If the grid resistor is too large, the positive bias developed by the flow of this current through the resistor decreases the normal negative bias and produces an increase in plate current. This increased current may overheat the tube and cause liberation of more gas which, in turn, will cause further decrease in bias. The action is cumulative and results in a runaway condition which can destroy the tube." Is there another effect which can be cured by cycling the power? -- Tom. Back to JT30 Home
Page 1 and 2:
Mic Kaczmarczik's Tube Information
Page 3 and 4:
Svetlana-6550s 07-Nov-1995 11:01 4k
Page 5 and 6:
From ftom@netcom.com Sun Mar 26 14:
Page 7 and 8:
From wright@uspto.gov Sat Aug 19 20
Page 9 and 10:
From tremolux@aol.com Tue Dec 20 11
Page 11 and 12:
From hap@bnr.ca Fri Mar 1 16:51:56
Page 13 and 14:
: : : What transformer secondary vo
Page 15 and 16:
At continuous DC current of 100mA .
Page 17 and 18:
From stratboy@onramp.nett Sun Dec 1
Page 19 and 20:
From power@wwdc.com Tue Sep 3 09:41
Page 21 and 22:
From ashinman@chem.ucalgary.ca Wed
Page 23 and 24:
From postmaster@triodeel.com Wed De
Page 25 and 26:
From mookie2112@aol.com Sat Jul 31
Page 27 and 28:
tubes. Very good in the #2 position
Page 29 and 30:
From postmaster@triodeel.com Thu Au
Page 31 and 32:
Organization: Univ of CT Health Cen
Page 33 and 34:
From raydeeohh@aol.com Mon Jan 30 1
Page 35 and 36:
Back to JT30 Home
Page 37 and 38:
From power@wwdc.com Mon Jul 29 10:3
Page 39 and 40:
From postmaster@triodeel.com Fri Ja
Page 41 and 42:
From SRSN81A@prodigy.com Sat Nov 25
Page 43 and 44:
From postmaster@triodeel.com Sun No
Page 45 and 46:
From rongon@bway.net Tue Jul 9 01:0
Page 47 and 48:
RCA - Very detailed when clean, sli
Page 49 and 50:
From larrysb@aol.comNOspahm Tue Dec
Page 51 and 52:
From meo@rru.com Wed Apr 19 14:02:1
Page 53 and 54:
From SRSN81A@prodigy.com Sat Aug 19
Page 55 and 56:
it!) with a well matched set of GTA
Page 57 and 58:
From tremolux@aol.com Fri May 19 22
Page 59 and 60:
From Kevin@UPSCALEaudio.com Sun Mar
Page 61 and 62:
From robertc908@aol.com Sun Jan 18
Page 63 and 64:
From ebarbour@netcom.com Sun Jun 18
Page 65 and 66:
From tekman@execpc.com Thu Oct 17 1
Page 67 and 68:
From postmaster@triodeel.com Fri Oc
Page 69 and 70:
From dpowers@jeeves.la.utexas.edu T
Page 71 and 72:
From npstewar@eos.ncsu.edu Thu Apr
Page 73 and 74:
Lines: 110 Message-ID: References:
Page 75 and 76:
6: enne-al 9-pin 7 is also a "misce
Page 77 and 78:
From triodeel@ameritech.net Wed Jun
Page 79 and 80:
From ebarbour@netcom.com Sat Aug 26
Page 81 and 82:
From Kevin@UpscaleAudio.com Wed May
Page 83 and 84:
From tremolux@aol.com Sat Oct 1 00:
Page 85 and 86:
it beefier magnetics and they can h
Page 87 and 88:
little gift of a bad trace, a bad L
Page 89 and 90:
From svetengr@aol.com Fri Mar 7 22:
Page 91 and 92:
From dhaugen9@mail.idt.net Fri Oct
Page 93 and 94:
with the numbers on top in a grey p
Page 95 and 96:
From: jatwood@netcom.com (John Atwo
Page 97 and 98:
Back to JT30 Home
Page 99 and 100:
From jjensen@sirius.com Wed Apr 30
Page 101 and 102:
(2) When the Chinese tried making 6
Page 103 and 104:
Many of Mazda's later tubes were ma
Page 105 and 106:
From Dr.Distortion@bbs.mhv.net Wed
Page 107 and 108:
From jjensen@sirius.com Fri May 2 1
Page 109 and 110:
From tomhiwatt@aol.com Thu Nov 21 1
Page 111 and 112:
From postmaster@triodeel.com Sun Au
Page 113 and 114:
From Teleologist@Sorry.NoEmail Thu
Page 115 and 116:
lack paint. This is a good case for
Page 117 and 118:
coupling in airborne sound to the t
Page 119 and 120:
UPSCALE Audio/Home Theater/Rare Tub
Page 121 and 122:
From stanj@dnai.com Sun Nov 19 10:5
Page 123 and 124:
From jcassidy@svetlana.com Thu Oct
Page 125 and 126:
small, so it could have been plain
Page 127 and 128:
From larrysb@aol.com Sat Aug 31 09:
Page 129 and 130:
From lewis@jpmorgan.com Wed Apr 17
Page 131 and 132:
4. The first grid voltage -35 V 5.
Page 133 and 134:
From PYLOT@asu.edu Tue Sep 19 11:35
Page 135 and 136: From grego@mud.lattice.com Thu Feb
Page 137 and 138: or control grid is sloppy. As you k
Page 139 and 140: From ep@interport.net Fri Jul 28 15
Page 141 and 142: From PYLOT@asu.edu Tue Aug 8 11:34:
Page 143 and 144: From postmaster@triodeel.com Sat Oc
Page 145 and 146: From idkwid@mail.smart.net Tue Nov
Page 147 and 148: From larrysb@aol.com Sat Oct 26 00:
Page 149 and 150: From larrysb@aol.com Thu May 16 10:
Page 151 and 152: From tremolux@aol.com Sun Oct 16 09
Page 153 and 154: From postmaster@triodeel.com Wed Fe
Page 155 and 156: From joelnice@diva.EECS.Berkeley.ED
Page 157 and 158: Subject: Re: Tomorrow's tubes? Send
Page 159 and 160: From mcjimi@aol.com Fri May 12 12:4
Page 161 and 162: mirrors. Or try: "It is also availa
Page 163 and 164: 8. Output transformer questions: >
Page 165 and 166: potential and plate potential, tran
Page 167 and 168: > A recently voiced although intuit
Page 169 and 170: * "rewinding transformers with CAD"
Page 171 and 172: From triodeel@interserv.com Wed Apr
Page 173 and 174: Best Regards, Kevin Deal High End,
Page 175 and 176: From bry@REMOVETHIS.mnsinc.com Sat
Page 177 and 178: From keen@austin.ibm.com Thu Mar 21
Page 179 and 180: Sovtek also markets 5U4G, 5Y3GT, 6S
Page 181 and 182: From rcsigurd@mm.com Tue Dec 17 15:
Page 183 and 184: The two, three, and four digit indu
Page 185: AEG/Telefunken themselves aren't ab
Page 189 and 190: By incorporating a tube rectifier i
Page 191 and 192: +++ +++ +++ -+---+---+---+---+---+-
Page 193 and 194: From keen@austin.ibm.com Sat Aug 13
Page 195 and 196: splitter in many hifi amps, lots of
Page 197 and 198: Here's the tough one: Why hasn't an
Page 199 and 200: The price for matched pairs/quads i
Page 201 and 202: which case you use unscew and remov
Page 203 and 204: From ebarbour@netcom.com Fri Sep 1
Page 205 and 206: From triodeel@interserv.com Fri May
Page 207 and 208: Ned Carlson Triode Electronics 2225
Page 209 and 210: From postmaster@triodeel.com Tue Ma
Page 211 and 212: From dawsondc@postoffice.worldnet.a
Page 213 and 214: After that, people wanted radios in
Page 215 and 216: I was given one answer which I thin
Page 217 and 218: From postmaster@triodeel.com Sat Se
show all

Mic Kaczmarczik's TubeInformation - The Blue Guitar

Create successful ePaper yourself

Delete template?

Save as template?