Hello,
I am trying to control 3 banks of four 4-wire, pwm fans, as well as 3 fuel injectors. I want to use pwm to control both the fuel injectors and the fans.
Here is the fan I am trying to use: http://www.mouser.com/ds/2/471/9SG1224P1G01-10596.pdf
My first question - can I connect the digital output of this module directly to the control wire of the fan?
I believe the NI9474 is a source, so it provides cuurrent, and the fan spec says that it acts as a sink at 1mA @ 0V.
Can I just connect the 4 control wires from a bank of fans into one digital out?
If I supply 5V to the NI9474, do I need to add a resistor or something in line to the control wire?
Would the NI9474 be capable of outputting 6 different pwm signals at different frequencies?
Thanks,
Mitchell