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understanding noise measurment (Read 1699 times)
yaniv
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understanding noise measurment
Aug 16th, 2006, 9:25am  
I made a project of controling current by conecting current supply to the drain of transistor, and control the current by changing the Gate voltage.
I measured the noise at the output of the current supply and at the output of my circuit.
the spectrum measurment show adding  10dB noise by my circuit.
how can I explain that additive noise?
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loose-electron
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Re: understanding noise measurment
Reply #1 - Aug 17th, 2006, 11:11am  
You may want to post a picture or more fully describe what you are doing.
It is a little unclear.

However, I believe you are seeing an amplification of the noise through a common source amplifier (ergo the current source)

hope that helps,
Jerry
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Jerry Twomey
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