11-24-2006 05:25 PM - edited 11-24-2006 05:25 PM
Message Edited by RL on 11-24-2006 05:31 PM
11-24-2006 08:12 PM
11-25-2006 12:25 AM
11-25-2006 06:29 AM
11-25-2006 08:38 AM
11-25-2006 07:22 PM
04-13-2007 01:11 PM
04-13-2007 01:42 PM - edited 04-13-2007 01:42 PM
Make sure you put supression diodes or snubbers across the valve coils if they are DC powered. The back EMF created when the valves are turned off can eventually destroy the transistors and the DAQ card depending on the coil specs.
EDIT:
And there is also the ULN2003:
http://focus.ti.com/lit/ds/symlink/uln2003a.pdf
Message Edited by AnalogKid2DigitalMan on 04-13-2007 11:46 AM
04-13-2007 01:55 PM - edited 04-13-2007 01:55 PM
Message Edited by RL on 04-13-2007 01:57 PM
04-13-2007 02:04 PM