23 Mar
2005
23 Mar
'05
11:41 p.m.
On Wed, 23 Mar 2005 12:54:35 -0500, Paul Koning <pkoning at equallogic.com> wrote:
If it's a voltage clamp, then either back to back
zeners, or a MOV
should work. MOV might be the better choice since they are explicitly
designed as protective devices. Zeners would be ok in the larger
sizes, but the small ones may be fragile enough that they don't do
well in this application.
I agree. MOVs are designed to be dirt-easy and robust to boot. If I
were to do it, I'd parallel a couple of 5W zeners BEHIND a suitably
sized MOV just to be on the safe side.
/wai-sun