What's this Capacitor warning?

Thread Starter

jut

Joined Aug 25, 2007
224
I have couple capacitors I removed from an old computer (1980s) that reads...

4700 uF 63V
CAN NOT ISOLATED
MADE IN UK
8345

Can someone tell me what "CAN NOT ISOLATED" means? It can't be used by itself?
 

lightingman

Joined Apr 19, 2007
374
Hi,It means that the metal can of the capacitor is not electricaly isolated from the internal structure.... Therefore if it is used with a capacitor clip, you should not damage the insulating material....Daniel.
 

SgtWookie

Joined Jul 17, 2007
22,201
It is likely that electrolytic capacitors that old are no longer good. The electrolyte in them dries out.
 

bloguetronica

Joined Apr 27, 2007
1,359
I'm not sure, but I think that in caps such as those, the can is connected to the negative pole of the capacitor.
 
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