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1. [Amps] HV PS transformer (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Wed, 11 Mar 2009 16:02:08 +0000 (UTC); GM gents, Part of my (3cx800A7) amplifier project is to do something "new". Well OK, it's old, but new to me. I'm trying to reproduce the switch mode power supply outlined by Tim Hullick W9QQ (SK); /archives//html/Amps/2009-03/msg00308.html (8,414 bytes)
2. Re: [Amps] HV PS transformer (score: 1): Author: Raymond Mack <ray.mack@sbcglobal.net>; Date: Wed, 11 Mar 2009 09:16:51 -0700 (PDT); Paul: If this is the article I remember, I have serious issues with his transformer design. Is this the one where he also sells a kit to replace the supply in SB220 and SB200? Your evaluation is corr; /archives//html/Amps/2009-03/msg00315.html (9,456 bytes)
3. Re: [Amps] HV PS transformer (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Wed, 11 Mar 2009 16:41:07 +0000 (UTC); Hi Ray, Interesting, I don't know if he has a kit for this or not, I haven't found much. It is pretty basic design and the parts are completely un-obtainable so I've had to do quite a bit of rework; /archives//html/Amps/2009-03/msg00316.html (11,040 bytes)
4. Re: [Amps] HV PS transformer (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Wed, 11 Mar 2009 15:16:38 -0700 (PDT); Hi Paul, I conjured up a simple solution for winding that style of transformer a while back. "Standard" Teflon isulated wire is typically rated for 600 volts. The 3KV rated stuff is too thick. Instea; /archives//html/Amps/2009-03/msg00328.html (11,233 bytes)
5. Re: [Amps] HV PS transformer (score: 1): Author: "pc5m, Carel" <pc5m@xs4all.nl>; Date: Thu, 12 Mar 2009 09:12:43 +0100 (CET); Hi Marv, Do you remember which kind/type of rectifier diodes you have been using ? Did do some research and found some ultra-fast diode's (trr < 30ns) with decent reverse voltage (600V), but would be; /archives//html/Amps/2009-03/msg00341.html (9,937 bytes)
6. Re: [Amps] HV PS transformer (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 12 Mar 2009 10:08:34 -0700 (PDT); Hi Carel, Take a look at CREE. http://www.cree.com/products/power_docs2.asp I'm using a phase modulation scheme at 100 KHz. And am currently investigating, at low power (250 watts), 192 KHz. 73 & Goo; /archives//html/Amps/2009-03/msg00347.html (12,006 bytes)

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