How to increase output current from USB-6009

[USB6009]

I am trying to control a relay (on/off) by using the NI USB-6009. The relay's spec indicates the rated voltage is 3 VDC, and the rated current is 73.3 mA. The D/O from the USB-6009 is good for the voltage side but too low for the current (+- 8.5 mA). Is there a way to increase the output current?

Relay: OMRON, G6RL (attached)

Also, I downloaded a VI from the Internet (specifically designed for the USB-6009).

Any suggestions? Can I connect 9 or 10 Digital Ports in parallel to get the adequate current output? Will that method damage the DAQ?

Thanks.

[eng.3zam]

What about using driver between daq and relay .

I thank you can use as example 2n2222a PNP transistor as driver

so that if you connect the relay directly to daq maybe damage the daq

so be carefully

[JtotheB]

Hey USB6009,

There is no way to increase the output amperage of your DAQ without an external device. In order to drive your relay I would recommend wiring your DAQ's output to an op-amp, or some other device capable of handling more current than the DAQ. Use that device to trigger your relay, rather than risking damage to your DAQ. Simply wiring your outputs in parallel will likely not give you the results you desire, and may cause damage to the device. You might also consider using the 5V power source available on the DAQ itself. According to the manual, there is a +-5V power supply capable of providing 200 mA. Here is a link to an online copy of the manual. Hope that helps!

[USB6009]

Thanks for the tip. I am inclined to use the +5V port after reading through the manual.