[Boatanchors] Re: GB> Caution re: 30 - 100 UF 5KVDC PS Filter Capacitor

Bry Carling bcarling at cfl.rr.com
Tue Aug 12 18:35:31 EDT 2008


He he - well Brad - they will CERTAINLY get discharged 
successfully enough with those shorting wires!!

Once o4 twice when I was teaching high school, students would 
go out into the shop with a large electrolytic and charge it up on 
a bench power supply to a few hundred volts. They would them 
march into a classroom full of 9th graders and quickly discharge 
the 
thing across their brass belt buckle (very, very popular among 
hip cowboy teenagers in Tennessee in the 1970s!) to the utter 
shock and astonishment of the younger kids.

Those things could make quite a loud crack and a 
powerfully bright spark, disturbing my otherwise serene
classroom...

Of course, they wouldn't do this too much because of the risk 
of punishment from yours truly, but the real disincentove was 
the ugly weld marks hey would get on their nice belt buckle  
from contact with the capacitor screw terminals.... Gotta still 
be able to impress the girls you know....

OK, and no jokes about the town of Bellbuckle, TN please!



> be careful
> handling
> any capacitors that aren't so supplied. Consider installing shorting 
> wires on any caps in your collection, but carefully discharge them
> before
> installing the wires.




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