What relay should I use?

Discussion in 'The Projects Forum' started by mellon, Mar 8, 2010.

  1. mellon

    Thread Starter New Member

    Mar 8, 2010
    1
    0
    Hi everyone,

    I would like to use a relay to interface between a RF receiver board, with a data out signal of 5V (TTL/CMOS) and a remote control car battery supply or around 12V/2A.

    This is with the aim of remotely cutting the supply to the car.

    I understand I will need a transistor to drive the relay on the 5V side.

    I am have difficultly which of the many many relays on RS (For example) would do the job.

    Would this one?
    http://www.electro-tech-online.com/...at/266d1054222981-can-pic-drive-relay-pic.gif
    OR
    http://uk.rs-online.com/web/search/searchBrowseAction.html?method=searchProducts&searchTerm=348245

    In this project, cheaper the better!

    Any answer would really help get a man out of jam :D

    James
     
    Last edited: Mar 8, 2010
  2. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
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