dc motor waveform measurement across shunt

[rk_t]

Hello,

We have an application where the positive of a Power supply is connected to a shunt and the other end of shunt is connected to the positive of a DC fan motor.

If a CRO is connected across shunt, it shows a sinusoid waveform. We want to replace this CRO with some NI hardware so that we can capture this waveform and use it for further analysis.

We are not sure if NI hardware can be used since motor is inductive and once the power supply is turned on, it gives a spike. So we needed some help regarding if any NI hardware can be used directly in the system. 

We would prefer a NI USB based hardware and Labview.

Thanks

Rohit

[Highland_Controls]

Please tell use the voltage levels you are seeing on the scope, including the spike.

[Highland_Controls]

Duplicate post