Thanks, didn't know that...how do you test if a surge protector is 
working other than the obvious way...

Do UPS's also have mov's?

Feroze

J. C. O'Connell wrote:
> mov's get "used up" (not quite same thing as going bad, since this is
> inherent ) due to a number of 
> small surges or one big one, leaving you with NO mov in effect.
> jco
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
> graywolf
> Sent: Friday, June 15, 2007 7:19 PM
> To: Pentax-Discuss Mail List
> Subject: Re: Lightning proof?
>
>
> Sometimes a surge partially gets past the first MOV. Also sometimes
> MOV's go bad. Just extra insurance in other words. 
>
> MOV is short for Metal Oxide Varistor and is is the semiconductor inside
> the unit that actually deals with the surge. 
>
>   

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