DAQ 6008 without H-bridge

[B4S3M]

I need to control a DC motor using DAQ 6008, but the problem is it is not permitted to do that with an H-bridge, is it possible to run the motor backward and forward using DAQ6008 without an H-bridge ??

i have another question also, The datasheet of the DAQ says its maximum voltage allowed is 10 , while overprotecting voltage is 35, does that mean if it acquire let's say 22 volts, will anything occure/harm the device? or i just have to stick to the 10 volts? 

[Scott-M]

Hi B4S3M,

The analog output specifications for the 6008 have a range of 0 to 5 V, in order to run the motor forward and backward you would need a +/- 5V range. Many of our USB M series device do have a range that includes both negative and positive values:

NI USB-6211

https://www.ni.com/en-us/support/model.usb-6211.html

You are correct about over voltage protection, you can apply up to 35V across a channel with out damaging it, however you will only be able to get readings up to 10V. So if you applied a signal of 22V that would not damage your hardware, however you wouldn't get a reading of 22V, you would just 10V.

I hope that helps,

Scott M.

[AnalogKid2DigitalMan]

You could use one of the digital outputs to drive a transistor or driver chip (ie ULN2003) that in turn drives a double pole double throw relay to reverse the polarity going to the DC motor.

-AK2DM