AVR-Chat

At 09:30 AM 8/12/2004, joseph torelli wrote:

>I don't know if this will fit but google "uln28003a". This is a relay driver
>chip. I has protection diodes built in. It can drive 8 relays or you can
>parallel the output for higher current relays. You can control it right from
>the output pins of the micro.

Eight darlington transistor pairs, and eight diodes.
He only needs one, and he almost certainly does not need a darlington's gain here.

Not that you couldn't use the ULN2003, but it's way overkill.