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

James

 

Here you go. $1.50us. Cheap enough?
http://www.jameco.com/webapp/wcs/st...toreId=10001&catalogId=10001&productId=187151