Is NI-9265 a constant current source?

[EyeMD]

Two questions:

1) Is the NI-9265 module a constant current source?  That is to ask, if set to output a fixed current, will the NI-9265 output that fixed current if the load impedance dynamically changes, assuming we are not going to hit the rails?

2) Can two channels be configured in a series push-pull configuration to create a single bipolar current source?

Thanks in advance.

[huyu]

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EyeMD wrote:

Two questions:

1) Is the NI-9265 module a constant current source?  That is to ask, if set to output a fixed current, will the NI-9265 output that fixed current if the load impedance dynamically changes, assuming we are not going to hit the rails?

2) Can two channels be configured in a series push-pull configuration to create a single bipolar current source?

Thanks in advance.

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1. Yeah, if you are in the power specifition, it can output the constant current value regardless of the load.

2. Well, because the NI-9265 can only push the current out, can not pull the current in, so it has essential differences with a voltage push-pull circuit, if you want to create bipolar current on the load using NI-9265, you must put one channel on one side of the load, this brings out other problems, so right now I haven't figured out a simple way for it.

[huyu]

Well, if you only need a bipolar current source, you can take a look at NI PXI-4130