On Sat, 12 Aug 2006 15:33:59 -0700, John Larkin wrote:
> On Sat, 12 Aug 2006 18:28:14 -0400, John Popelish <jpopelish@xxxxxxxx>
>>John Larkin wrote:
>>> So any MOV can absorb a megajoule?
>>100 of the largest of these in parallel might.
>>http://www.littelfuse.com/data/en/Data_Sheets/CA.pdf (10 kj each)
> Yeah, but the big one clamps at about 7 kilovolts!
> Some of the curves sort of imply a lifetime of 1 to 1e6 shots, depending
> on the energy per shot, with a fuzzy disclaimer.
In the 1970's, I worked at an outfit that used a lot of high-voltage stuff,
and they used MOVs, which caused more problems than they solved. One day,
one of the engineers saw a press release for Transzorbs, and we tried one,
and within days had issued ECO's to replace every MOV in the product line
with a Transzorb.
Hope This Helps!