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Unread 05-02-2003, 10:20 AM   #19
bigben2k
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Join Date: May 2002
Location: Texas, U.S.A.
Posts: 8,302
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I picked up all my parts at AllElectronics.com . They have a special going on now, where shipping is free, using the promotion code SHIPFREE , for orders of $25 or more, until May 15th. (USA, sorry)

Check out pHaestus pump wiring article, for details. What you want, is a SS relay that can handle the current that is being supplied to the pump, so check your pump: if it needs 1 amp, then try to get a relay that can handle more than that, like 2 amps. On the other side, you have to make a design decision: are you going to power the relay from a 12v line, or a 5v line? Try to find something that has a high resistance, because you don't want the relay to draw a lot of power from the PSU.
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