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1. [Amps] Load testing HV power supplies (score: 1): Author: Chris Wilson <chris@chriswilson.tv>; Date: Mon, 24 Sep 2012 12:25:07 +0100; 24/09/2012 12:21 I am in the midst of making a couple of HV power supplies. I would like to know if there's a safe means of testing these under load, without using the RF deck and an expensive tube t; /archives//html/Amps/2012-09/msg00275.html (7,461 bytes)
2. Re: [Amps] Load testing HV power supplies (score: 1): Author: "Jerry Kaidor" <jerry@tr2.com>; Date: Mon, 24 Sep 2012 17:20:09 -0700; I once made a dummy load for CRT power supplies. It consisted of a *lot* of 1/2W resistors all in series, the whole string covered in shrink tubing, and then put in a plastic box with spark plug wire; /archives//html/Amps/2012-09/msg00281.html (7,982 bytes)
3. Re: [Amps] Load testing HV power supplies (score: 1): Author: TexasRF@aol.com; Date: Mon, 24 Sep 2012 20:26:34 -0400 (EDT); Hi Chris, I have tested power supplies using a dummy load made up from a string of 25 watt wire wound resistors. They have a maximum voltage rating of 300v typically so it will take quite a few of th; /archives//html/Amps/2012-09/msg00283.html (8,749 bytes)
4. Re: [Amps] Load testing HV power supplies (score: 1): Author: Karl-Arne Markström <sm0aom@telia.com>; Date: Tue, 25 Sep 2012 07:22:50 +0200 (CEST); When building a 2 x 4-1000A amplifier in the late 70's, I load tested its 3-phase PS using 25 series connected 220 V 200 W light bulbs. With a HV knife switch in series, actuated with a wooden broom; /archives//html/Amps/2012-09/msg00284.html (8,733 bytes)
5. Re: [Amps] Load testing HV power supplies (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Tue, 25 Sep 2012 08:35:40 -0700 (PDT); Hi Chris, A large resistor load bank. I made one myself with a 4 position selector switch. The switch had to be heavily snubbed to prevent arcing. I used some 225 watt resistors in series. I have eno; /archives//html/Amps/2012-09/msg00289.html (9,324 bytes)
6. Re: [Amps] load testing HV Power supplies (score: 1): Author: "Jim Garland" <4cx250b@muohio.edu>; Date: Tue, 25 Sep 2012 10:29:38 -0600; To test, say, a 4000V@ 1Amp HV power supply requires a 4000 ohm/4000W resistor, which you're unlikely to find in your junk box! As a practical matter, the only way to test such a power supply is with; /archives//html/Amps/2012-09/msg00291.html (8,071 bytes)
7. Re: [Amps] Load testing HV power supplies (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Tue, 25 Sep 2012 18:02:50 +0100; I used 100 W light bulbs when I did it. They were cheaper than 100 W resistors. Just string them in series, on an insulated board. Whether you consider it "safe" depends on the circumstances. I would; /archives//html/Amps/2012-09/msg00292.html (8,451 bytes)

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