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Recent content by sudiipta

  1. S

    NI 9265 as bipolar current source

    I thought I can use an amplifies once I am able to generate a bipolar signal.
  2. S

    NI 9265 as bipolar current source

    I thought I can use an amplifies once I am able to generate a bipolar signal
  3. S

    NI 9265 as bipolar current source

    Hi, I am trying to use NI 9265 as bipolar current source , Is it possible? It can generate 0-20mA. I am using labview program for the pulse generation. I am attaching the pulse that I want to generate.
  4. S

    Digitally controllable current source

    Hi, I need one more clarification, Labjack analog output can be set to a voltage between 0 and 5 volts with 10-bits of resolution. Ni PCI 6221 analog out put Maximum Voltage Range -10 V , 10 V. Does that mean I can go from -10 V to 0 V in 1000 steps and then 0V to +10 V in another 1000...
  5. S

    Digitally controllable current source

    Hi, I just found that we have a better DAQ card NI PCI 6221 which has 16 bit resolution, and max voltage range is -10 V and +10 V. Does it mean that I dont have to flip relay for negetive polarity? What you mean by flip replay? Can you help me with VB program? Also some example circuit...
  6. S

    Digitally controllable current source

    Hi, I just found that we have a better DAQ card NI PCI 6221 which has 16 bit resolution, and max voltage range is -10 V and +10 V. Does it mean that I dont have to flip relay for negetive polarity? What you mean by flip replay? Can you help me with VB program? Also some example circuit...
  7. S

    Digitally controllable current source

    I have a Labjack U3 HV DAQ card which has build in D2A and A2D converter. But how that will help to vary current by 1 micro Amp every sec (I know that using Opamp I can convert this voltage to current) to feed in my device,? Do I need some microcontroller based solution? So that I can program...
  8. S

    Digitally controllable current source

    Hi, I have a Labjack U3 HV DAQ card which has build in DAC card. But that will help to vary current by 1 micro Amp every sec to feed in my device? Voltage of my device will be in microvolt to 2 milliVolt range. Thanks p.s. My previous reply is still not visible on the site. Worried...
  9. S

    Digitally controllable current source

    @ KMikeMl I have DAQ card Labjack U3 HV (U3 | LabJack). Do you thibk I can use this card to generate current from -1 mAmp to 1 mAmp in steps of 1 microAmp per second ? @ Diver300 Device (metallic nanosystem) under test will have resistance around 50 ohm. Max Voltage of my test device...
  10. S

    Digitally controllable current source

    Hi, I want to build a current source to test my device. I want to vary current from -1 mAmp to +1 mAmp, in steps of 1 microAmp per second (i.e.2000 steps) and source these current to my device. As I want to vary the current every sec and record voltage at the same time, I want to do it using...
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