20 Mar
2007
20 Mar
'07
10:08 a.m.
From: Mr Ian Primus <ian_primus at yahoo.com>
---snip---
So - in replacing this component, what should I be
looking for? The only specification givin is 100A, but
I see varistors in various places rated in terms of
Joules or Volts. I don't want to replace the varistor,
only to have it not give me any protection for that
transistor.
Thanks!
-Ian
Hi
One could also use a pair of power zeners. Wired back to back, they
make a fare protector. Actually, in your case, a single zener might be
better. It would clamp the voltage in one direction to the normal
operating level while allowing only a diode drop the other direction.
Dwight
_________________________________________________________________
It?s tax season, make sure to follow these few simple tips
http://articles.moneycentral.msn.com/Taxes/PreparationTips/PreparationTips.…