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  1. paulpoosk

    Low Noise Voltage Source

    Could someone elaborate on "bridge configuration"? Links? Thanks everyone, Paul
  2. paulpoosk

    Low Noise Voltage Source

    IRstuff, thanks a lot for your suggestions. However, my goal is to perform this experiment without a lock-in amplifier. jtdsamuels, do you have any links to these sites that you mention? How about any circuit schematics of an instrumentation amplifier? Thanks.
  3. paulpoosk

    Low Noise Voltage Source

    It does not need to go all the way up to 2V.
  4. paulpoosk

    Low Noise Voltage Source

    I was incorrect at first...the noise is 10-15mV. I am applying 0-2V to 50 ohm load, with a need to detect changes in resistance of less than 1 ohm. The idea is to retrieve an M-R transfer curve by monitoring the load.
  5. paulpoosk

    Low Noise Voltage Source

    No, I don't think a low ripple power supply is an option.
  6. paulpoosk

    Low Noise Voltage Source

    Hi, All: I am monitoring the change in resistance of a load (~50 Ohms) with respect to a varying applied magnetic field (changes R_load by fractions of an Ohm). I would like to bias a constant voltage across this load to monitor these changes. I am having difficulty maintaining a low-noise...

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