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Lecture Experiments Department of Physics

Noise of a resistor

Experiment no.: 8.5.5
Wider­stands­rauschen
The thermal noise of a resistor is measured at the temperature of liquid nitrogen and at room temperature.

Caution: Experiment with LN2 (eye damage possible)!
Personal protective equipment necessary!

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Images for this experiment
Set-up
Experiment
Voltage signal inherent noise
Voltage signal at room temperature
Voltage signal at 77 K
Voltage and frequencies inherent noise
Voltage and frequencies at room temperature
Voltage and frequencies at 77 K

Documents for this experiment
Calculating the mean free path
Diffusion
Set-up of the measurement sample