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interfacing decoder Ht12d and relays

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parsi.praneeth@gmail.com

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hi all,

i am a newbie...

how can i interface the ht12d and relays..

here i will connect motors to relays the the output of ht12d should be given to relays ... i am confused about how to connect the decoder output to relays .
 

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parsi.praneeth@gmail.com said:
here i will connect motors to relays the the output of ht12d should be given to relays ... i am confused about how to connect the decoder output to relays .
Click to expand...
The outputs of the HT12D cannot drive relays directly. You need a transistor driver to drive a relay whose base can be connected to the HT12D output pin.
Cheers
 
Hi,
And remember to limit the current to the bases of the transistor and choose transistors that can handle the relay current.
Hope this helps.
Tahmid.
 

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