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Date: Wed, 24 Jun 2009 08:34:24 -0700
Message-ID: <1c23473f0906240834q2d3a4228n3edb579f81aa7bbd@mail.gmail.com>
Subject: Relay Woes
From: David Leonard <wdleonard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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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

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For you EE types, I have a question.=A0=A0 I am installing a smoke system a=
nd wanted to use a relay to control the pump.=A0 I bought this relay from M=
ouser that I thought would do the trick:<br><br><a href=3D"http://www.mouse=
r.com/Search/ProductDetail.aspx?qs=3DsGAEpiMZZMtLEhJ5P%2fNsZ6bnrz6%2f%252b%=
252bJvA50eSiydqPQ%3d">http://www.mouser.com/Search/ProductDetail.aspx?qs=3D=
sGAEpiMZZMtLEhJ5P%2fNsZ6bnrz6%2f%252b%252bJvA50eSiydqPQ%3d</a><br>
<br>The problem is that if there is any load (like the pump or even the 0.0=
2A indicator LED I installed, then the relay will not turn off when I turn =
off the signal voltage.=A0 So either I do not understand how to use the rel=
ay, or I chose the wrong relay.=A0 I have checked my wiring in-so-much as t=
o confirm that the signal voltage does turn on and off with the switch, vol=
tage across the &#39;LOAD&quot; terminals does disappear when there is no l=
oad but not when there is a load (current).=A0 <br>
<br>Is it possibly because this relay is designed for an AC load?=A0 Other =
suggestions?<br><br>-- <br>David Leonard<br><br>Turbo Rotary RV-6 N4VY<br><=
a href=3D"http://N4VY.RotaryRoster.net">http://N4VY.RotaryRoster.net</a><br=
>
<a href=3D"http://RotaryRoster.net">http://RotaryRoster.net</a><br>

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