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1. [Amps] Shaded pole motor speed (score: 1): Author: Martin Sole <msole@loxinfo.co.th>; Date: Wed, 23 Aug 2006 09:56:04 +0700; For some time now I have been thinking about ways to improve the airflow through the tubes in my amplifiers. I have a total of four amps, a 30L1, two Alpha 78's and a Henry 2K classic. In all cases I; /archives//html/Amps/2006-08/msg00620.html (7,589 bytes)
2. Re: [Amps] Shaded pole motor speed (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 22 Aug 2006 23:11:22 -0400; Martin, Most of the small cheap variable speed controls use a SCR and an oscillator to do a pulse-width control of the motor. What I've seen on some amps that use a speed thermostat, they just use a; /archives//html/Amps/2006-08/msg00621.html (9,566 bytes)
3. Re: [Amps] Shaded pole motor speed (score: 1): Author: Martin Sole <msole@loxinfo.co.th>; Date: Thu, 24 Aug 2006 20:12:28 +0700; Thanks for all the interesting replies on this. I have had a quick mess with a variac. Motor starts at about 70 volts and speed seems to stabilise about 90 to 95 volts. It's a 110 volt motor so I onl; /archives//html/Amps/2006-08/msg00639.html (10,060 bytes)

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