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Reducing Voltage Source Noise (Read 133 times)
Roby
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Reducing Voltage Source Noise
Feb 28th, 2005, 10:11am  
I am trying to measure Current response of a tunneling junction by sweeping the voltage from 0 to 0.5V. I measure the noise of v-source alone and found out that it is too high. Can i connect a capacitor across the DUT while taking teh measurement (which is equivalent to  a high resistor) to reduce the noise.

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Roby
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August West
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Re: Reducing Voltage Source Noise
Reply #1 - Feb 28th, 2005, 12:08pm  
You can if ...
1. the bandwidth of the resulting RC filter has appreciable attenuation at the frequency of interest.
2. the currents that flow as a result of inserting the capacitor do not in turn cause their own problems.

-August
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