LPC arcing in mech relay contacts.

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Rob-NYC
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Re: LPC arcing in mech relay contacts.

by Rob-NYC » Sun Feb 28, 2016 4:24 am

Oh, and Rob-if a "regular size fuse" is inserted, you do not need "tweezers" to remove it--just press down on it and allow the spring to snap it out--


Without belaboring the point, this is what I am talking about:

http://s1192.photobucket.com/user/Rob-N ... rt=2&o=209

Unless you can tip the unit to make the blown fuse fall out, a pliers will be needed...or a very sticky finger :-)

Rob
"If we believe absurdities, we shall commit atrocities" -- Voltaire


Ron Rich
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Re: LPC arcing in mech relay contacts.

by Ron Rich » Sun Feb 28, 2016 8:04 pm

Rob,
I guess we will have to agree to dis-agree here, unless you want to practice !! :lol: --I just did pop a "regular fuse" out of a (red cap) GMQ holder here--and have done so "hundreds" of times-and I ainna gotz no "sticky finger" !
All that's needed is something "pointy" ( I just used a pocket Phillips screwdriver)--push down and allow the spring to pop it up high enough to use the point to grab the fuse between the glass and metal--then pull it the rest of the way out- This particular unit today, was an amp, which sat "sideways"-but, I have done this several times on a wall-box power transformer that is screwed down to the cabinet floor--
Ron Rich


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babycat
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Location: Leimert Park, Los Angeles, CA, USA

Re: LPC arcing in mech relay contacts.

by babycat » Wed Mar 02, 2016 12:29 pm

hey guys. it could be that my blown fuse was actually a more common out-of-spec replacement already. it's too big in diameter to fit in the red cap, and i fished it out of the sleeve pretty easily... but there are no markings at all on the fuse. when i get home i'll take a closer look at the cap and see if somebody had already done the trick with the old end piece in the cap. i'm 1200 miles from the LPC. i needed a break from it anyway! it's encouraging to know i could experiment with 4A SB's. then monkey with the damn relay.


back next week to a fairly busy schedule... should be excited to work on it again after settling in.

cheers and thanks!
eric


Ron Rich
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Re: LPC arcing in mech relay contacts.

by Ron Rich » Wed Mar 02, 2016 5:12 pm

Hi Eric,
If you fished the glass portion out of the red cap, and found no markings on it, I would assume it was the correct one--
The "regular sized, replacement" will NOT enter the red portion of that cap--the idea is to use the cap to push down on the "new" fuse, so that it will make contact with the bottom of the holder, and the cap itself-- Ron Rich

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