Hi,

 

If I want 12v to only flow one way in a power wire, do I use a diode or a relay?

 

Cheers

 

Vijay

Diode :thumbup1:

Cheers bud.

 

Can they simply be put inline? So I would just cut the wire and the diode goes in the middle? Are they ok for 12v? Are they rated by amps? It's obviously a normal 12v car supply ;)

Edited July 3, 201114 yr by vijay

IN5408 are ones i use for the car for led rear lights etc.. Yes you wire it inline, normally close to the source but not essential, the silver ring on the end of the diode need to face the direction of the the item being supplied with power, ie.. it will only work one way.

 

They are fine for 12v and are normally rated in amps i wouldnt worry about the amps on a 12v supply the likelihood is it will be 30amp max.

Thanks mate, really appreciate the advice :)