5A, 12V Relay Interface Circuit.

[ShiningTears]

Hello,

I am new to electronics. Does anyone suggest me a Circuit to interface 5Ampere 12Volt Relay to a Parallel port.

Also, there is written " 400 Ohm " on the relay coil. Is it the internal resistance of the coil ??

Well don't worry about parallel port and Programing, I can handel that. Thanks.

 

[eblc1388]

Also, there is written " 400 Ohm " on the relay coil. Is it the internal resistance of the coil ??

Yes, it is.

I'm lazy and stole the image from Tony Van Roon website. In the circuit, do not leave out D3 as it is important to use it.

 

[ShiningTears]

THANKS.

I am going to try it. If i feel any problem, i am gona tell u about that. Thanks again.

 

[ShiningTears]

I Have tried the Circuit you have provided and it worked.
But Will u plz tell me about this circuit, i have found this on a website which says that this one is Safer for parallel port? Does this circuit can handle 12V, 5A relay ?
Well for me i don't know.

 

[eblc1388]

Yes, go ahead and use it for your design.