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need help about the relay..!

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sheth_ka

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hi guys,
i hav a project that needs to control and activate a 12 Volts dc buzzer(mostly use in cars).
this buzzer will be used as an alarm when the countdown ends.
to control the buzzer i used pic16f84a,the program embedded to this pic enables the buzzer to turn ON automatically.
i hav successfully done this using 6V dc buzzer, and now i hav to use a more bigger buzzer which eventually needs a 12V dc supply.
and the first thing that comes to my mind is to use a relay switch or something.
unfortunately, i dont hav any idea about this relay. also, i dont know what kind of relay to be used.
i need help with this simple problem, if you hav any idea or solution, pls post it ASAP.
i would be glad if you include some schematics of the relay.
thanks in advance!:D
 

cameo_2007

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Choose the relay which has a coil voltage of 5VDC and the contact rating of anything more than 12VDC/1A
 

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