On Sat, 08 Oct 2005, Marty wrote:
> I found this on the APC web site:
> http://www.apc.com/resource/include/techspec_index.cfm?base_sku=AP9825#
That's a current loop converter, it isolates the signals in the data cable
against interference (because it uses current and not voltage to encode the
signals, and it takes a LOT more EM to indue a lot of noise in a current
loop), and decouples the two sides ("floats the ground") since the current
loop is differential by nature. I don't know how well it would suppress a
surge.
A surge suppressor is something much simpler. A google search for "serial
line surge suppressor" gives good results:
Some "budget" ones:
http://www.bb-elec.com/product_family.asp?FamilyId=108&TrailType=Sub&Trail=94
There even is an USB surge protector, I didn't know they were easy to find
already. Good :)
If you are paranoid or you know you will get a lot of big surges, you can
get a bad-ass one for a bit more (but still below US$ 100):
http://www.bb-elec.com/product_family.asp?FamilyId=38&TrailType=Sub&Trail=94
--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
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