Off Topic--Electronic gurus
Jul 4, 2009 | 03:16 PM
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From: Sapulpa, OK
Off Topic--Electronic gurus
Ok guys I setting up something for some kids and I have a siren that is going to go off, but when the siren goes off I want it to shut off 10 seconds later. So basically when power is supplied I need something inline that automatically disconnects power after 10 seconds then resets. Any type of relay or ??? that will do this? Thanks
Jul 4, 2009 | 03:43 PM
Joined: Jul 2004
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From: Yuba City, CA.
Yes there is. It's called a time delay relay. I'm no electronics guru, but I'll search around and see what I can dig up. Jim, (Megawatt) should be along shortly and probly have a pn. for you.
edit: Here's what I'm refering too, but you'll need a socket to use with this style-
http://www.tycoelectronics.com/catalog/feat/en/c/15003
Jul 4, 2009 | 03:46 PM
Joined: Feb 2007
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From: Dallas-Ft. Worth
DC or AC power? What voltage?
Jul 4, 2009 | 03:49 PM
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From: Yuba City, CA.
Jul 4, 2009 | 03:51 PM
Joined: Aug 2004
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From: SLC, UT
Go down to your local electric supply house (Grainger, CED etc) tell them what you are doing and they will have everything there for you. The above mentioned will work and I'm willing to bet they have that and the sockets in stock.
Jul 4, 2009 | 05:20 PM
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From: Buckingham, IA
Johnstone Supply would be a possibility if there is one near you.
Jul 4, 2009 | 11:14 PM
Joined: Jan 2002
Posts: 17,988
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From: La La Land
Quote:
Originally Posted by
WA.Ranger
Off-topic, but there's an interesting-looking relay on that site. Twelve-volt coil, 300-amp contacts, for $7.50 apiece.
Wonder if it could double for a GPR.
Pop
Jul 5, 2009 | 12:00 AM
Joined: Jul 2004
Posts: 3,156
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From: Yuba City, CA.
Quote:
Originally Posted by
SpringerPop
Off-topic, but there's an interesting-looking relay on that site. Twelve-volt coil, 300-amp contacts, for $7.50 apiece.
Wonder if it could double for a GPR.
Pop
I didn't look around that site too much, but that sounds like something we would use on DC powered forklifts!
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Jul 5, 2009 | 12:27 AM
Joined: Nov 2004
Posts: 399
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From: Draper, Utah
Quote:
Originally Posted by
SpringerPop
Off-topic, but there's an interesting-looking relay on that site. Twelve-volt coil, 300-amp contacts, for $7.50 apiece.
Wonder if it could double for a GPR.
Pop
<table style="border-collapse: collapse;" id="Table2" width="100%" border="0" cellpadding="2" cellspacing="0"><tbody><tr><td class="ProdDisplay2" width="100%">Detailed Description </td> </tr> <tr> <td class="sitewidefonts" width="100%"> 12 VDC Relay/Solenoid.
300 Amp Intermittent duty.
2 Threaded terminals for the contacts.
1 Threaded terminal with 1/4" push-on terminals for the coil.
The coil grounds through the mounting bracket.
Measures: 3" x 2" x 2-3/4". </td></tr></tbody></table>
would that work very well though i would think a seperate lug for the ground would be better.
Jul 5, 2009 | 12:34 AM
Joined: Jan 2002
Posts: 17,988
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From: La La Land
Quote:
Originally Posted by
agg_bagg
<table style="border-collapse: collapse;" id="Table2" border="0" cellpadding="2" cellspacing="0" width="100%"><tbody><tr><td class="ProdDisplay2" width="100%">Detailed Description </td> </tr> <tr> <td class="sitewidefonts" width="100%"> 12 VDC Relay/Solenoid.
300 Amp Intermittent duty.
2 Threaded terminals for the contacts.
1 Threaded terminal with 1/4" push-on terminals for the coil.
The coil grounds through the mounting bracket.
Measures: 3" x 2" x 2-3/4". </td></tr></tbody></table>
would that work very well though i would think a seperate lug for the ground would be better.
You are quite correct. The relay for a GPR needs to have both a high and low-side contact for the coil. This one won't work.
I didn't make that final click for "more details", where I would have seen that little detail.
Thanks for going the extra mile.
Pop
Jul 5, 2009 | 10:28 AM
Joined: Feb 2007
Posts: 14,541
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From: Dallas-Ft. Worth
Also, aren't the Stancors rated for something like 600A intermittent? 300 seems a little low to me, IIRC.
Jul 5, 2009 | 11:23 AM
Joined: Jan 2002
Posts: 17,988
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From: La La Land
The Stancor 802-586-902 is 200 continuous, 600 inrush (1/2 second).
Just the same, the one from skycraftsurplus needs to have another coil lug to be useable with out some kind of modification.
That relay might be good for some other applications, but not the GPR.
I may still buy one, however.
Pop