Mo Murphy Posted December 15, 2006 Share Posted December 15, 2006 What does this double pole, single pole, double throw or single throw all mean with regard to switches as I'm simple and can't work it out. Mo Quote Link to comment Share on other sites More sharing options...
western Posted December 16, 2006 Share Posted December 16, 2006 IIRC single throw is a normal 2 position on/off switch, double throw is a 3 position off/on/on or on/off/on switch, don't recall what single & double pole is for. Quote Link to comment Share on other sites More sharing options...
Matt Neale Posted December 16, 2006 Share Posted December 16, 2006 IIRC sinlge throw is a normal 2 position on/off switch, double throw is a 3 position off/on/on or on/off/on switch, don't recall what sinlge & double pole is for. That's the easy bit! Single pole - the switch acts on only one side of the circuit, eg only the Positive. Double pole - disconnect both the Pos and the Neg at the same time. Matt Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted December 16, 2006 Author Share Posted December 16, 2006 Thanks guys but why would you need to switch the negative side of a circuit as well ? What sort of things would you work like that. No wonder it's called electrickery ! Mo Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted December 16, 2006 Share Posted December 16, 2006 Here you go: http://en.wikipedia.org/wiki/DPDT Quote Link to comment Share on other sites More sharing options...
LS26 Posted December 16, 2006 Share Posted December 16, 2006 Thanks guys but why would you need to switch the negative side of a circuit as well ? What sort of things would you work like that. No wonder it's called electrickery !Mo These can also be used to control two devices that need separate feeds but need to be switched together for some reason - although I can't think of any such application on a vehicle... Rog Quote Link to comment Share on other sites More sharing options...
BogMonster Posted December 16, 2006 Share Posted December 16, 2006 These can also be used to control two devices that need separate feeds but need to be switched together for some reason - although I can't think of any such application on a vehicle...Rog We had somebody in at work the other day wanting a switch for a Range Rover, one of them which switches on the wipers and the headlights at the same time, you know the ones. After patiently explaining there was no such thing, "why", "because it isn't always dark when it is raining, and it isn't always raining when it's dark" he went away again empty handed.... I guess that would be a suitable application for a DP switch Quote Link to comment Share on other sites More sharing options...
rtbarton Posted December 16, 2006 Share Posted December 16, 2006 These can also be used to control two devices that need separate feeds but need to be switched together for some reason - although I can't think of any such application on a vehicle...Rog A double pole arrangement can be found in the hazard switch. This connects the left & right indicators together in the 'hazard' position, but keeps them seperate for normal use. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted December 21, 2006 Author Share Posted December 21, 2006 I missed the last couple of posts, my apologies for not thanking sooner, I now understand Mo Quote Link to comment Share on other sites More sharing options...
Guest diesel_jim Posted December 21, 2006 Share Posted December 21, 2006 You could also use a double pole switch to isolate 2 winches, say front and rear (i just looked at what i typed... front & rear? as opposed to what? roof and cubby box? ), anyway, you could have one switch to isolate the low amperage hand remote feed to both allbright solenoids for example, so that they were turned "off" but not "shorted" together via one switch. Quote Link to comment Share on other sites More sharing options...
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