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Re: How is Thermal voltage derived?

Discussion in 'Electrical Engineering' started by Roy, Jun 11, 2008.

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  1. Roy

    Roy Guest

    From: (Salmon Egg)
    The Thermal voltage equation is Vt=kT/q
    http://en.wikipedia.org/wiki/Thermal_voltage#Role_in_semiconductor_physics:_Th
    e_Thermal_Voltage
    Does anyone know how to derive the Thermal voltage equation?
    Thanks,
    Paul
    It is actually quite simple in terms of statistical mechanics.
    Temperature is defined as the average energy in a degree of freedom.
    That is
    E=kT
    where k, Boltzmann's constant, relates average energy to temperature
    temperature. Dividing by q expresses this average energy in
    electron-volts.
    Calling this a derivation makes it sound much more complicated than it
    really is.
    Bill
    -------------------
    So, what you are saying is: Vt=kT/q can be formulated from E=kT applying
    statistical mechanics like you just did ?
    ....what did i say.....

    But., It would seem E=kT is derived from Vt=kT/q};) not the other way
    around.

    <=/ statistical mechanics}:)
    good reference.

    Roy Q.T. ~ US/NCU ~ E.E. Technician
    [have tools, will travel]
     
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