"DaveC" wrote in message
al.net...
I've got several remote alarm sensors triggered by 120vac relays. When
power
fails, the alarm calls the right folks.

Problem is that even the small power glitches get these guys out of bed.
Not
a good thing.

How can I delay the de-energizing of these relays? 5 minutes without power
is
OK. Will a series diode and shunt cap do the trick? If so, what size cap?
If
not, what're my options?

The relay is similar to this one:

http://tinyurl.com/6pppw

Thanks,
--
Please, no "Go Google this" replies. I wouldn't
ask a question here if I hadn't done that already.

DaveC

Hi. Hmm, sorry but you should Goo.... Altavista this. Use the term 'delay
relay'. Here's one:
http://www.automatictiming.com/pages...layrelays.html

The more run-of-the-mill parts places don't sell them, but relay specialists
do (not sure what the situation is in your area).
Farnell also have these (they're possibly easier to use):
http://au.farnell.com/jsp/endecaSear...erDisplay=true

(They operate USA too, I just didn't have the link handy)

Cheers.

Ken