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21. Re: [Amps] HV Fuse (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Fri, 20 Sep 2019 15:38:24 -0400; I dont think fuses in parallel are a good idea :-). But probably you werent serious Paul, W9AC . I dont know what the present rectifier modules are, but rather than trying to protect them with a fuse; /archives//html/Amps/2019-09/msg00048.html (10,571 bytes)
22. Re: [Amps] HV Fuse (score: 1): Author: "Mike McCarthy, W1NR" <lists@w1nr.net>; Date: Fri, 20 Sep 2019 15:38:52 -0400; I have an old Henry that has a Bussman HVB fuse. The larger HVJ is rated for 5KV. They are sand filled cardboard, not ceramic. Available from Mouser but are quite expensive. I'd look around for bette; /archives//html/Amps/2019-09/msg00049.html (9,372 bytes)
23. Re: [Amps] HV Fuse (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Fri, 20 Sep 2019 17:49:53 -0400; Time to make your own from an open one or start from scratch.. Carl I have an old Henry that has a Bussman HVB fuse. The larger HVJ is rated for 5KV. They are sand filled cardboard, not ceramic. Avai; /archives//html/Amps/2019-09/msg00050.html (10,638 bytes)
24. Re: [Amps] HV Fuse (score: 1): Author: MU 4CX250B <4cx250b@miamioh.edu>; Date: Fri, 20 Sep 2019 16:39:42 -0700; I dont have a problem with HV fuses in parallel, Paul. Ive used two and sometimes three of the 900 MA microwave oven fuses in parallel. If there is a circuit overload, all three of the fuses will blo; /archives//html/Amps/2019-09/msg00051.html (11,882 bytes)
25. Re: [Amps] HV Fuse (score: 1): Author: Vic Rosenthal <k2vco.vic@gmail.com>; Date: Sat, 21 Sep 2019 07:40:26 +0300; It would seem to me that if the fuses had slightly different resistances then one would blow first, followed by all the others. Interesting question: which would go first, the highest or the lowest R; /archives//html/Amps/2019-09/msg00052.html (11,792 bytes)
26. Re: [Amps] HV Fuse (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Sat, 21 Sep 2019 06:27:03 -0500; I always thought the way to make a h.v. fuse was to bolt a pair of ceramic standoffs in a convenient location, making them around 2 or 3 inches apart, and stretch a very thin gage copper wire between; /archives//html/Amps/2019-09/msg00053.html (7,281 bytes)
27. Re: [Amps] HV Fuse (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Sat, 21 Sep 2019 09:50:11 -0400; Vic, I think you're suggesting that small differences in a HV fuse's open time, even if within spec, can effectively create a delayed-action or slow-blow fuse type when multiple fuses are paralleled.; /archives//html/Amps/2019-09/msg00054.html (14,167 bytes)
28. Re: [Amps] HV Fuse (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Sat, 21 Sep 2019 12:23:44 -0400; That works until it doesnt and then creates a nice wild plasma arc. That is something to watch!! Carl I always thought the way to make a h.v. fuse was to bolt a pair of ceramic standoffs in a conveni; /archives//html/Amps/2019-09/msg00055.html (8,430 bytes)
29. Re: [Amps] HV Fuse (score: 1): Author: Jeff Blaine <KeepWalking188@ac0c.com>; Date: Sat, 21 Sep 2019 12:16:38 -0500; I did the same thing as Rob, but put a length of 1/2" pyrex tube between the two. When the fuse goes, that pyrex tube contains the arc. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com Carl I al; /archives//html/Amps/2019-09/msg00056.html (9,111 bytes)
30. Re: [Amps] HV Fuse (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Sat, 21 Sep 2019 14:18:05 -0500; Sometimes we need a little excitement to have something to talk about when ragchewing, hi hi. Rob _______________________________________________ Amps mailing list Amps@contesting.com http://lists.co; /archives//html/Amps/2019-09/msg00057.html (7,683 bytes)
31. [Amps] HV Fuse (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Sat, 21 Sep 2019 14:38:43 -0700; <The bigger issue is the use of a HV fuse between the transformer secondary and C-input filter in an attempt to save the rectifier stacks during a fault event that occurs after the filter cap and bef; /archives//html/Amps/2019-09/msg00058.html (11,578 bytes)
32. Re: [Amps] HV Fuse (score: 1): Author: <dj7ww@t-online.de>; Date: Mon, 23 Sep 2019 09:43:14 +0200; HV fuses are still produced: https://kentec.net/pdf/eska/eska46.pdf https://www.eskafuses.com 73 Peter Time to make your own from an open one or start from scratch.. Carl -- Original Message -- From:; /archives//html/Amps/2019-09/msg00061.html (12,668 bytes)

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