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1. [Amps] soft-start vs. autotransformer (score: 1): Author: Jan Ditzian <ditzian@alltel.net>; Date: Thu, 01 Mar 2007 09:21:26 -0500; I recently put an SB-201 (2 x 572B) on the air, with the assistance of this and other groups. One modification I considered but did not add was a soft-start. Instead, because my line voltage is at th; /archives//html/Amps/2007-03/msg00001.html (7,429 bytes)
2. Re: [Amps] soft-start vs. autotransformer (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Thu, 1 Mar 2007 09:29:39 -0500; One thing for sure, you can sure kill the voltage regulation with an autotransformer. Be sure you haven't hurt the no load to full load HV regulation. Keep in mind we can't measure the voltage sag f; /archives//html/Amps/2007-03/msg00002.html (6,894 bytes)
3. Re: [Amps] soft-start vs. autotransformer (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Thu, 1 Mar 2007 12:31:52 -0500; That's true. All you have are lead resistances and the wiper contact resistance. While the problem is mostly at voltages other than 100%, we have to remember the very high power factor causes peak p; /archives//html/Amps/2007-03/msg00006.html (7,457 bytes)
4. Re: [Amps] soft-start vs. autotransformer (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Thu, 1 Mar 2007 14:23:40 -0500; Hi Jan, What is the full load HV on the SB 200 with the amp plugged directly into the outlet, and with the amp plugged through the variac system to the same outlet, when you are running the same pla; /archives//html/Amps/2007-03/msg00007.html (8,410 bytes)

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