calculation of bandwidth

Jan 15, 2008 1 Replies

Hi everyone,



I have a tranducer connected to the power supply with 1.5 metre long 1 mm diameter cable that has a resistance of 0.02 ohms/metre.



What is the formula for calculating the bandwidth for such a system? The reason I ask is that I need to calculate the shot-noise generated by the current (3 amperes) and the formula for the shot noise has a bandwidth component but I do not know how to get the bandwidth from this information.



Thanks, Luca


The bandwidth you want is probably that of the measuring system, or of the system the transducer signal feeds into. That will probably be smaller than what you would get from .03 ohms and a few picofarads.

-- John

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