Page 16 - Complementarity and Variational Inequalities in Electronics

6 Complementarity and Variational Inequalities in Electronics

FIGURE 1.3 Clipping circuit 1: Ideal diode as shunt element, E = 1.

and thus

V o (t) = V(t) + E = u(t) − Ri(t)
= u(t) + min{0,E − u(t)}= min{u(t),E}. (1.2)

This shows that the circuit in Fig. 1.2 can be used to transmit the part of a given
input signal u that lies below some given reference level E (see Fig. 1.3).