>Bit of a problem here, in that in a very short time if the cap is in the >wrong way >around you could have some rather spectacular self destruction of the cap >occurring. >Good to see you disclaimer at the end of the message:-} Yes. I use this mainly as an assembly check - not as a way of checking unknown caps (usually anyway :-)). If one IS backwards I remove and discard it and use a new one as there is too much risk that it has been damaged and is walking wounded. RM