PXI module for analog output voltage and high current?

[griplegraple]

Hey,

I have a proportioning valve I want to control. Specs state 2.5-7 VDC to open the valves and control span 1-2 VDC with 0.8 Watts typical dissipation. This appears to need 320 - 800mA? All PXI devices I found only output around 20 mA max. Also, it doesn't appear from the valve diagram that it is externally powered.. only one + and on - cable going into the valve. 

If you have any suggestions, please post up, or if you can point me into a way to use the voltage from  a PXI module and draw current from another source. Please provide the dummy version if drawing current from another source. 

Thanks

griplegraple

[KateB]

That specification doesn't sound very correct. If you can post its specification could be helpful. However, if you really need such AO, here is the list http://sine.ni.com/np/app/main/p/bot/no/ap/mi/lang/en/pg/1/sn/n17:mi,n21:7037,n9:8589/

[griplegraple]

Thanks for the info. I missed the power supplies section I guess. As for the specs.. that is how they read. I think I misunderstood the voltage span as 1-2 VDC. I think this means that at 2.5VDC + 1-2 VDC or up to 7 VDC + 1-2 VDC span. This would drop the current to the range (320 - 114 mA) depending on voltage. That is my understanding, might be wrong. 

Anyways, PXI-4110 seems to be a decent option for now. If anyone else has a cheaper alternative, please let me know.

-griplegraple