Page 41 - Complementarity and Variational Inequalities in Electronics

The Convex Subdifferential Relation Chapter | 2 31

FIGURE 2.21 Transistor N–P–N.

or, equivalently,

(I)
V E ∂ψ R +
∈ . (2.5)

V C (I )
∂ψ R +
Moreover,

I 1 α I I E
= (2.6)
I α N 1 I C
and
I B =−(I E + I C ). (2.7)
Relations (2.5)–(2.7) constitute a handy mathematical model for the transistor.