Thermal noise

Johnson–Nyquist noise (thermal noise, Johnson noise, or Nyquist noise) is the electronic noise generated by the thermal agitation of the charge carriers (usually the electrons) inside an electrical conductor at equilibrium, which happens regardless of any applied voltage.

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Applet owner erg2332
Applet identifier thermal_noise
Applet title Thermal noise
Applet description Johnson–Nyquist noise (thermal noise, Johnson noise, or Nyquist noise) is the electronic noise generated by the thermal agitation of the charge carriers (usually the electrons) inside an electrical conductor at equilibrium, which happens regardless of any applied voltage.
Applet credits Eduardo Reyes, 2013 12 28
Applet font name Bitstream Vera Sans Mono
Applet font style 0
Applet font size 18
Applet html width 500
Applet html height 400
Applet data number 4
Applet results number 1

Variable 1 k
Label 1 k [J/K]
Description 1 Boltzmann constant
Initial value 1 1.3806503E-23
Variable 2 T
Label 2 T [K]
Description 2 Temperature
Initial value 2 290
Variable 3 R
Label 3 R [ohm]
Description 3 Resistance
Initial value 3 1000
Variable 4 B
Label 4 B [Hz]
Description 4 Bandwidth
Initial value 4 1E6

Variable 1 v_rms
Label 1 v_rms [V]
Description 1 Rms noise voltage
Formula 1 sqrt(4*k*T*R*B)

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