Consider the circuit shown in Figure P7.2.18 with ideal diodes in order to approximate a two terminal nonlinear resistor whose v-i curve satisfies i = 0.001v2 in a piecewise-linear fashion.
(a) Find the values of R1, R2, and R3.
(b) Suppose that both diodes have Rf = 10 Ω and Von = 0.5 V. Find the revised values of the resistors and voltage sources (v1 and v2) in order to accomplish the same objective.