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a different kind of relay for ignition help

Posted: Sat Dec 01, 2007 6:54 pm
by JDP12
Hey, well i got the parts for my ignition, but i have a different kind of relay. Here is a picture of what it shows for the pins, so how would I wire this type?

those squares are pins, yes there are eight

this a link to the relay: http://www.radioshack.com/product/index ... age=search


I'll be using this with a camera capacitor and ignition coil by the way

EDIT: It is a double Pole double throw relay, here is what wikipedia says about it
DPDT - Double Pole Double Throw. These have two rows of change-over terminals. Equivalent to two SPDT switches or relays actuated by a single coil. Such a relay has eight terminals, including the coil.

<img src="http://i157.photobucket.com/albums/t79/ ... 1196552685">[/quote]

Posted: Sat Dec 01, 2007 7:53 pm
by TechnoMancer
what do you want to do?? the thing acts as two switches which are separate. when the relay is off the switches are connected to the one contact. when the relay is on they switch to the other contact. you can use it as two separate on off switches!

Posted: Sat Dec 01, 2007 7:53 pm
by JDP12
I need to figure out how to wire it like the one in the spudwiki how to, or at least how to make it perform the same task.

Posted: Sat Dec 01, 2007 7:55 pm
by TechnoMancer
firstly these are usually not very big so what is it switching. i'll go look at the article now.

Posted: Sat Dec 01, 2007 7:56 pm
by JDP12
k its under camera flash ignition

Posted: Sat Dec 01, 2007 7:57 pm
by TechnoMancer
what are you building so i can tell which article in the wiki to look at?

Posted: Sat Dec 01, 2007 7:58 pm
by TechnoMancer
can you send a picture of the top of this relay or of the side with the diagram on it?

Posted: Sat Dec 01, 2007 8:01 pm
by JDP12
umm here, sorry that doesnt have a picture of it, i'll keep trying

<img src="http://rsk.imageg.net/graphics/product_ ... 11w345.jpg">

Posted: Sat Dec 01, 2007 8:02 pm
by TechnoMancer
OK I've seen the link. but it is rather hard to explain. on your diagram you want to use pin 9 or pin 12 for the one connection and then probably pin 5 or pin 8 for the other.

Posted: Sat Dec 01, 2007 8:12 pm
by JDP12
soo run the battery to pins 9 and 5, then run the ignition coil to pins 12 and 8? here's a pic of what i mean



<img src="http://i157.photobucket.com/albums/t79/ ... 1196557948">

Posted: Sat Dec 01, 2007 8:39 pm
by TechnoMancer
no
the battery and switch must go to 13 and 14 cause those are the switching coil!!
the capacitor and coil can be wired like that though

Posted: Sat Dec 01, 2007 8:45 pm
by JDP12
ok sorry, I just have no idea about these things.

So it would look like this?

Thanks for the help

<img src="http://i157.photobucket.com/albums/t79/ ... 1196559883">

Posted: Sat Dec 01, 2007 8:47 pm
by TechnoMancer
that should be right.
if that doesnt work the coil could be connected to pin 4

Posted: Sat Dec 01, 2007 8:48 pm
by JDP12
okay thanks for all the help i really appreciate it :)

Posted: Sat Dec 01, 2007 10:48 pm
by TurboSuper
Yep, that looks to be about right. Those relays basically just let you operate two different circuits at once, but you can just ignore one switch if you want to.