[ARC5] [Milsurplus] HV Fuses: You Were Right, I Was Wrong

J. Forster jfor at quikus.com
Fri Jun 15 08:37:26 EDT 2012


Absolutely predictable. You could try several equal fuses in series. No
guarantees though.

HV DC really arcs, especially with any inductance in the circuit.

-John

=============




> As you all probably remember, I did some testing using
> Picofuses (tm)  to rebuild the BC-375 high-voltage
> fuse links.   I "destruction tested" six or eight of them.
> Each opened without problems.
>
> Wellll......
>
> One opened during my 211 tests due to a gassy tube.
> No problem.
> I replaced it with another rebuilt fuse.
> Another gassy tube, but this time....
> "ZZZZZZZZZZZZZZ!!..........." from inside the
> dynamotor.  The Picofuse had opened, but fully carbonized
> and was transformed into a nice spark gap.  I'm lucky
> the inductive kick didn't take out any of the inductors.
>
> So.... You were Right.  I was Wrong.
> Back to the drawing board.
> Probably try 3AG pigtails mounted externally.
>
> 73 Dave AB5S
>
> ______________________________________________________________
> Milsurplus mailing list
> Home: http://mailman.qth.net/mailman/listinfo/milsurplus
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Milsurplus at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>




More information about the ARC5 mailing list