Shockley Model of the Diode
The mathematical model most commonly used in the study of the diode is that of Shockley (after William Bradford Shockley) that allows us to approximate the behavior of the diode in most applications. The equation that links the current intensity and the potential difference is: I = I S ( e q V D n k T & # x2212; 1 ) {\displaystyle I=I_{S}\left({e^{qV_{D} \over nkT}-1}\right)}
Where:
In order to avoid the use of exponentials (despite being one of the simplest models), even simpler models are sometimes used, which model the operating zones of the diode by straight sections; are the so-called continuous or Ram-signal models shown in the figure. The simplest of all (4) is the ideal diode.
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