12v relay

Submitted: Friday, Feb 01, 2008 at 18:51
ThreadID: 54124 Views:1375 Replies:4 FollowUps:6
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does anyone know the minimum volts to activate a 12volt relay. is it like 10 volts or 9 volts or 5 . thanks . and good on ya !!
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Reply By: Robin Miller - Friday, Feb 01, 2008 at 18:52

Friday, Feb 01, 2008 at 18:52
Typically closer to 9v Sam , but after its made contact it won't release until around 5v
Robin Miller

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AnswerID: 284973

Reply By: Derek from Affordable Batteries & Radiators - Friday, Feb 01, 2008 at 19:14

Friday, Feb 01, 2008 at 19:14
Hi Sam

Ours switch on at 7.1V and off at 4.1V

They are 12V 30A 5 pin

Regards

Derek.
AnswerID: 284974

Reply By: Mike Harding - Friday, Feb 01, 2008 at 19:19

Friday, Feb 01, 2008 at 19:19
What are you trying to do with it Sam?

The "pull in" and "drop out" voltages vary amongst manufacturers and models.

Mike Harding
AnswerID: 284977

Follow Up By: samsgoneagain - Friday, Feb 01, 2008 at 19:33

Friday, Feb 01, 2008 at 19:33
oh.. i was going to put it from the second battery to the fridge so when the voltage drops too low the relay would cut out and stop draining the battery. like a cheap voltage drain switch thing i suppose..
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Follow Up By: Mike Harding - Friday, Feb 01, 2008 at 20:04

Friday, Feb 01, 2008 at 20:04
Nice idea Sam but it won't work I'm afraid.

By the time most 12V relays reached the "drop out" voltage the battery would be well below its minimum voltage. Take a look at some of the electronic cut-out devices available; they are not too expensive.

Mike Harding
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Follow Up By: samsgoneagain - Friday, Feb 01, 2008 at 20:12

Friday, Feb 01, 2008 at 20:12
ok, thanks mike and co.
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FollowupID: 549777

Reply By: Derek from Affordable Batteries & Radiators - Friday, Feb 01, 2008 at 20:18

Friday, Feb 01, 2008 at 20:18
Why don't you use a proper cut out.





Regards

Derek
AnswerID: 284984

Follow Up By: Mike Harding - Friday, Feb 01, 2008 at 20:41

Friday, Feb 01, 2008 at 20:41
Even better... I think Derek will be able to sell one to you!
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FollowupID: 549782

Follow Up By: V8 Troopie - Friday, Feb 01, 2008 at 23:08

Friday, Feb 01, 2008 at 23:08
That one switches off at 11.2V. This is a bit too low IMO to save a battery.
The gadget has an English front panel but the important details on the back are in German!
Abschaltspannung = switch off voltage
Einschaltspannung = switch on voltage
Max. Stromaufname = power rating

Klaus
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FollowupID: 549829

Follow Up By: Ray - Saturday, Feb 02, 2008 at 08:09

Saturday, Feb 02, 2008 at 08:09
I baught one off Derick. Cheap and works fine. I just fitted an aderson plug to match my fridge
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FollowupID: 549856

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