Dave;
You’ll notice on the data sheet
for the relay you bought it says “yes” under the “zero cross
function” – Which I’d take to mean for DC it will not turn
off.
Al
-----Original Message-----
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of David Leonard
Sent: Wednesday, June 24, 2009
7:34 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Relay Woes
For you EE types, I have a question. I am
installing a smoke system and wanted to use a relay to control the pump.
I bought this relay from Mouser that I thought would do the trick:
http://www.mouser.com/Search/ProductDetail.aspx?qs=sGAEpiMZZMtLEhJ5P%2fNsZ6bnrz6%2f%252b%252bJvA50eSiydqPQ%3d
The problem is that if there is any load (like the pump or even the 0.02A
indicator LED I installed, then the relay will not turn off when I turn off the
signal voltage. So either I do not understand how to use the relay, or I
chose the wrong relay. I have checked my wiring in-so-much as to confirm
that the signal voltage does turn on and off with the switch, voltage across
the 'LOAD" terminals does disappear when there is no load but not when
there is a load (current).
Is it possibly because this relay is designed for an AC load? Other
suggestions?
--
David Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net