Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+Quieting\s+fan\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+Quieting\s+fan\s*$/: 28 ]

Total 28 documents matching your query.

1. [TenTec] Quieting fan (score: 1): Author: Ken Brown <ken.d.brown@verizon.net>; Date: Sun, 18 Jan 2004 13:47:18 -1000; Hi, I lost the message that I am referring to. Someone said they put a resistor in series with the fan motor in order to make it run quieter. How do you determine that there is still sufficient air f; /archives//html/TenTec/2004-01/msg00600.html (7,027 bytes)
2. Re: [TenTec] Quieting fan (score: 1): Author: John Rader <k5xtx@yahoo.com>; Date: Sun, 18 Jan 2004 16:49:39 -0800 (PST); I checked the case temperature before during and after a 5 minute continuous key-down @ 450 watts into a dummy load. The results; recorded with a Raytek infrared thermometer: *before; case intake 95; /archives//html/TenTec/2004-01/msg00601.html (8,100 bytes)
3. Re: [TenTec] Quieting fan (score: 1): Author: Ken Brown <ken.d.brown@verizon.net>; Date: Sun, 18 Jan 2004 19:22:13 -1000; Hi John, I'm glad you have made some good measurements that seem to indicate you are still getting sufficient cooling at the slower fan speed. I am curious what the meaurements were before the resist; /archives//html/TenTec/2004-01/msg00613.html (8,270 bytes)
4. Re: [TenTec] Quieting fan (score: 1): Author: "Gary Smith" <mandolinist@ameritech.net>; Date: Mon, 19 Jan 2004 16:20:17 -0600; I rarely chirp in but I do as many "power" computer users do & that's "water cooling" on my computer. There's a large market for these kind of heat sinks & in short what is done is to have water repl; /archives//html/TenTec/2004-01/msg00624.html (9,437 bytes)
5. Re: [TenTec] Quieting fan (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Mon, 19 Jan 2004 18:05:20 -0500; I design these kinds of things. Much more compact than a heater core, and no fan, and much cooler. ok....end of shameless plug ! :) Seriously, these work for radios too, and you can totally get rid o; /archives//html/TenTec/2004-01/msg00628.html (10,985 bytes)
6. Re: [TenTec] Quieting fan (score: 1): Author: Martin Ewing <martin@aa6e.net>; Date: Mon, 19 Jan 2004 18:54:02 -0500; This seems off-topic, but anyway... Some of the larger xmtr tubes have water cooling jackets; they must predate the PC. So, nothing new here, except applying it to transistor finals. You need a sourc; /archives//html/TenTec/2004-01/msg00630.html (12,266 bytes)
7. Re: [TenTec] Quieting fan (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Mon, 19 Jan 2004 19:10:00 -0500; Martin, The problem with air is that to cool a space as small as a chip, and yet remove perhaps 80 watts of power from that confined space, requires substantial amounts of air. This is more than can; /archives//html/TenTec/2004-01/msg00631.html (14,628 bytes)
8. Re: [TenTec] Quieting fan (score: 1): Author: Ken Brown <ken.d.brown@verizon.net>; Date: Mon, 19 Jan 2004 14:17:26 -1000; Hi Gary, The original post was in regards to an amplifier which uses a pair (maybe 4) 572B triodes. These are glass envelope tubes. While it may be possible to precool the air using a chilled water s; /archives//html/TenTec/2004-01/msg00632.html (8,421 bytes)
9. Re: [TenTec] Quieting fan (score: 1): Author: "Gary Smith" <mandolinist@ameritech.net>; Date: Mon, 19 Jan 2004 18:22:17 -0600; One of the problems people using the Peltier chips for cooling is that the hot side stil needs to be cooled and if you use a fan on that you'll be defeating the noise issue. In the computer most peop; /archives//html/TenTec/2004-01/msg00633.html (17,159 bytes)
10. Re: [TenTec] Quieting fan (score: 1): Author: Steve Weber <kd9bo@mac.com>; Date: Mon, 19 Jan 2004 19:17:46 -0600; Dear fellow cult-of-the-cosmic-orange-dot members, Would it be possible to surround the tube with a finned heat sink similar to those used on some transistors? What about ducting that discharges by t; /archives//html/TenTec/2004-01/msg00637.html (9,813 bytes)
11. Re: [TenTec] Quieting fan (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Mon, 19 Jan 2004 21:59:17 -0500; Ken, I certainly agree that we are not going to run cold water through 572B's. In the modern shack there are (at least) three places where there might be a fan, or a fan might be useful (RTTY), and t; /archives//html/TenTec/2004-01/msg00638.html (10,001 bytes)
12. Re: [TenTec] Quieting fan (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Mon, 19 Jan 2004 22:01:13 -0500; Many tubes are cooled with finned heatsinks, which also double as shields. I'm sure many of you have seen this done. For that matter, many tubes have metal cases. Any idea if a 572B or similar tube h; /archives//html/TenTec/2004-01/msg00639.html (11,667 bytes)
13. Re: [TenTec] Quieting fan (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Mon, 19 Jan 2004 22:03:57 -0500; Hi Gary, from Gary :) The condensation problem is real, but is solved commercially by insulating and sealing the cold side of the system. The hot side is remoted, to the outside of the case, using th; /archives//html/TenTec/2004-01/msg00640.html (19,721 bytes)
14. RE: [TenTec] Quieting fan (score: 1): Author: "John Clifford" <johnclif@ix.netcom.com>; Date: Mon, 19 Jan 2004 19:11:12 -0800; All of the cooling ideas are interesting... but the idea of the 150 ohm 25w resistor is probably the most practical. The poster of that message indicated that he had made temperature measurements sho; /archives//html/TenTec/2004-01/msg00641.html (8,780 bytes)
15. Re: [TenTec] Quieting fan (score: 1): Author: "Dave Edwards" <kd2e@comcast.net>; Date: Mon, 19 Jan 2004 23:01:17 -0500; Steve... My 1KW Heathkit SB230 from ...I guess the early '80s uses a heat sink cooled tube. A single 8873, it uses no fan...just a heat sink on the back and does an easy 600 watts out. Totally quiet!; /archives//html/TenTec/2004-01/msg00644.html (11,335 bytes)
16. Re: [TenTec] Quieting fan (score: 1): Author: "Ron Notarius WN3VAW" <wn3vaw@fyi.net>; Date: Mon, 19 Jan 2004 23:27:57 -0500; Wasnt the SB-230 the allegedly mobile linear, or am I thinking of a different one? Also, I seem to recall it from the era of the late 60's and/or '70's, not the '80's. 73, ron wn3vaw "I'd give real m; /archives//html/TenTec/2004-01/msg00646.html (12,348 bytes)
17. Re: [TenTec] Quieting fan (score: 1): Author: w8au@sssnet.com; Date: Tue, 20 Jan 2004 00:04:35 -0500; At 11:27 PM 01/19/2004, you wrote: Wasnt the SB-230 the allegedly mobile linear, or am I thinking of a different one? Also, I seem to recall it from the era of the late 60's and/or '70's, not the '80; /archives//html/TenTec/2004-01/msg00647.html (8,774 bytes)
18. RE: [TenTec] Quieting fan (score: 1): Author: "Rick Westerman" <Rick@dj0ip.de>; Date: Tue, 20 Jan 2004 06:46:11 +0100; It was the 70's and the mobile amp was (as I recall) the HA-14 using 2x 572B's. The problem with the SB230, apart from the tube being highly poisenous, is simply the cost of a new tube and the extrem; /archives//html/TenTec/2004-01/msg00650.html (12,536 bytes)
19. Re: [TenTec] Quieting fan (score: 1): Author: "Ron Notarius WN3VAW" <wn3vaw@fyi.net>; Date: Tue, 20 Jan 2004 00:40:56 -0500; Ah! Yes, that's the one I was thinking of... now that I'm thinking about it, wasn't the SB-230 the replacement for the SB-200/201 series, matching the style/appearance of the SB-104 & related equipme; /archives//html/TenTec/2004-01/msg00651.html (9,422 bytes)
20. RE: [TenTec] Quieting fan (score: 1): Author: "Rick Westerman" <Rick@dj0ip.de>; Date: Tue, 20 Jan 2004 10:29:06 +0100; Yes, that's the one. --Original Message-- From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]On Behalf Of Ron Notarius WN3VAW Sent: Tuesday, January 20, 2004 6:41 AM To: tentec; /archives//html/TenTec/2004-01/msg00656.html (9,544 bytes)

Current List: 1 - 20
Page: [1] [2]