Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+SB\-220\s+flash\s+over\s+in\s+power\s+supply\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+SB\-220\s+flash\s+over\s+in\s+power\s+supply\s*$/: 6 ]

Total 6 documents matching your query.

1. Re: [Amps] SB-220 flash over in power supply (score: 1): Author: "Dave G. ve9cb@rac.ca" <ve9cb@rac.ca>; Date: Sat, 14 Dec 2019 04:12:31 +0000 (UTC); Hello all: I am looking for some advice on some arcing I am seeing in the B+ supply of my Heathkit SB-220. I never used the amplifier before I bought it at a flea market in Spring 2019. I have modifi; /archives//html/Amps/2019-12/msg00020.html (8,961 bytes)
2. Re: [Amps] SB-220 flash over in power supply (score: 1): Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>; Date: Sat, 14 Dec 2019 06:35:02 +0200; _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2019-12/msg00021.html (6,655 bytes)
3. Re: [Amps] SB-220 flash over in power supply (score: 1): Author: Artek Manuals <Manuals@ArtekManuals.com>; Date: Sat, 14 Dec 2019 06:13:27 -0500; Dave Long shot but your comment about it might be stray rf Struck a cord. 1) I would try the amp on 80M if you dont get the flash over then there then this adds credence to that theory. 2) A beefier; /archives//html/Amps/2019-12/msg00023.html (9,640 bytes)
4. Re: [Amps] SB-220 flash over in power supply (score: 1): Author: Thomas Walsh <w2co@comcast.net>; Date: Sat, 14 Dec 2019 07:20:55 -0700; Use a grid dip meter and make sure the plate choke is not resonant in circuit with tubes in place on the freq. you want to operate on. Actually whenever you change the plate choke this should be done; /archives//html/Amps/2019-12/msg00024.html (9,126 bytes)
5. Re: [Amps] SB-220 flash over in power supply (score: 1): Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>; Date: Sat, 14 Dec 2019 17:15:07 +0200; Sorry. Here it is: I've heard that RF can damage electrolytic caps, so it it a problem. You might try paralleling a larger bypass capacitor at the bottom of the choke. If you do that, you will notice; /archives//html/Amps/2019-12/msg00025.html (10,521 bytes)
6. Re: [Amps] SB-220 flash over in power supply (score: 1): Author: Jim <jimw7ry@gmail.com>; Date: Sat, 14 Dec 2019 21:27:55 -0600; A .01 uf 6KV cap is available at Mouser. They are about 6 or 7 bucks though. They work perfectly for this. Not sure it will fix your problem though. Thanks 73 Jim W7RY I've heard that RF can damage e; /archives//html/Amps/2019-12/msg00026.html (11,301 bytes)

Current List: 1 - 6
Page: [1]