[Milsurplus] BC-375 HV fuses needed

WA5CAB at cs.com WA5CAB at cs.com
Tue Sep 13 15:10:28 EDT 2011


I'm interested, too.  If it works reliably it may be a general solution.

However, I need to point out that in a fuse, it isn't the air gap that the 
arc is propagating through.  But ionized metal vapor, a plasma.

In a message dated 09/13/2011 13:59:51 PM Central Daylight Time, 
brunneraa1p at comcast.net writes: 
> Theory says it won't work, but I will not argue against success.  Maybe
> you have devised a new combination HV fuse!  Do let us know what
> happened.
> 
> Richard
> 
> 
> On Mon, 2011-09-12 at 20:23 -0500, David Stinson wrote:
> >----- Original Message ----- 
> >From: "Richard Brunner" <brunneraa1p at comcast.net>
> >Subject: Re: [Milsurplus] BC-375 HV fuses needed
> >
> >
> >>A 120 volt fuse isn't going to interrupt a high voltage circuit, but 
> >>it
> >>will continue to arc, introducing voltage drop to the circuit fault 
> >>and
> >>maybe limit damage...
> >
> >Hmmm.... I've had one of them open on mine already
> >while testing 211s.
> >It didn't arc.  It worked just like it was supposed to.
> >I haven't tried to replace the picofuse yet so don't know if
> >it blew to pieces or what.  I'll see if I can find it.
> >1000 volts in air won't sustain an arc over very much distance.
> >And the leads on a picofuse would melt-off quickly.
> 

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480


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