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(no common earth)
| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610   
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DPDT (Double Pole Double Throw) relay. Position 1 to one coil, position 3 to other job jobbed. Available from RS components. Depends on what you are supplying and expected current draw etc. Fuse both the relay coils and the relay feeds as well as the 12 volt power outlet. Can't give ratings as information above is too scant.
Relays below in link are up to 10 amps, any more current draw and you'll have to go heavier duty. http://uk.rs-online.com/web/c/?searchTerm=...ss&r=t If you go through life with your head in the sand....all people will see is an ar5e!! Treat every day as if it is your last....one day you will be right!! Last edited by K9F on 13th May 2013 7:25pm. Edited 2 times in total |
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13th May 2013 4:41pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20811
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I was going to mention something about a Relay but thought I'd better keep quiet and recommend K9F in case I give some wrong info.
 _\Hennessey|Venom| F5/___
___\âï¸Lone|Star|State/___ ____\We|Will|Win/___ ____/🇬🇧🇺🇸\____ _//*⛽ï¸ðŸ›¢ï¸âš™ï¸ðŸ§°*\\_ |
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13th May 2013 4:43pm |
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| ibexman Member Since: 13 Dec 2008 Location: Essex Posts: 2963
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Wheres PAUL Mc
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13th May 2013 5:11pm |
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| ARC99 Member Since: 19 Feb 2013 Location: North Yorkshire Posts: 1831 
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You could use one of these.
http://www.towsure.com/product/SelfSwitching_Combination_Relay use one output for 1 st battery and instead of connecting to a fridge use the second outlet to the 2nd battery Place simple switch in line to switch on and off. |
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13th May 2013 6:10pm |
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| bpman Member Since: 21 May 2008 Location: Oslo Posts: 8069 
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Tiger
why no common earth ? what sort of current/amps are you thinking of running thru? (20amps you should be thinking of adding a relay) Fuses are a good idea too Jamie will be along with a wiring diagram shortly  |
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13th May 2013 6:35pm |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610
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Ironically I have a project on the go that I needed to source some DPDT relays 10 amp rated. If these suit your needs here are the RS details to save you scratching around....Just a cut and paste job from my e-mail order.
RS ITEM NUMBER 402-213, RELAY SOCKET 8 PIN PAGE 1217 PRICE £6:48 EACH RS ITEM 376-385 DPDT 10 AMP RELAY PAGE 1217 PRICE £9:29 EACH If you go through life with your head in the sand....all people will see is an ar5e!! Treat every day as if it is your last....one day you will be right!! |
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13th May 2013 6:58pm |
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| Splitpin Member Since: 07 May 2013 Location: Midlands Posts: 100
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I'm sure we should throw in the ability to run them in 24v configuration also
How are they charged? |
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13th May 2013 7:18pm |
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| Tiger Member Since: 06 Jul 2012 Location: Wales Posts: 2265 
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2x Cteks |
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13th May 2013 7:48pm |
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