Transistor Selection for Switching Relay Coil-with a little bit of info on my "ARSC"

[RussMartin]

For some reason, I couldn't get that second link from your other post to open . . .

Try http://www.st.com/stonline/products/ and then use the second box to do a part number search for ULN2803 or ULN2803A.

[rxforspeed]

Try http://www.st.com/stonline/products/ and then use the second box to do a part number search for ULN2803 or ULN2803A.

That worked, thanks again sir! I see exactly what you mean, too-the more ouputs you're using and/or the higher the current draw through the array equals less overall time the array IC can be used. I don't believe that my program and the current needs of the relays I'm using will be too much for these.

I will, however, have a back-up-just in case, with the 5V relays (power supply isolated from PIC's) and the 2N7000's. Thanks again for all the help!

Sincerely,