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1. [Amps] GPT-750 power supply (score: 1): Author: "Steve Flood" <kk7uv@bresnan.net>; Date: Thu, 9 Feb 2012 06:03:18 -0700; I've been attempting to design a power supply using the big (100 lb) TF-193 transformer from a GPT-750 transmitter, the rating of which is 2800vdc @ 750mA CCS, which is about what I'd like to get out; /archives//html/Amps/2012-02/msg00070.html (7,238 bytes)
2. Re: [Amps] GPT-750 power supply (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 9 Feb 2012 08:47:24 -0800 (PST); Hi Steve, If you don't mind heating up the room ... You could use what I call a "smart bleeder". Take a big power FET (IXYS IXTX5N250 or similar), suitably heatsinked, and connect it in series with a; /archives//html/Amps/2012-02/msg00076.html (10,003 bytes)
3. Re: [Amps] GPT-750 power supply (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Thu, 9 Feb 2012 21:13:46 -0500; All you need for a choke is to get a bit past the "critical inductance" which is explained in all the old handbooks. Use more C at the output to reduce ripple. I use a 12H 600ma choke also (must have; /archives//html/Amps/2012-02/msg00083.html (9,371 bytes)
4. Re: [Amps] GPT-750 power supply (score: 1): Author: "Dave" <dave@g8kbv.demon.co.uk>; Date: Fri, 10 Feb 2012 04:58:35 -0800; Re the smart bleeder. Cascode two or more HV Power Fet modules, Drain to Source etc, and use resistors to set the individual gate voltages for the upper FET's so they (more or less) share the load. T; /archives//html/Amps/2012-02/msg00087.html (8,187 bytes)

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