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// Dynamic resistance at forward bias
// Basic Electronics
// By Debashis De
// First Edition, 2010
// Dorling Kindersley Pvt. Ltd. India
// Example 2-27 in page 103
clear; clc; close;
// Given data
k_BT=25.86*10^-3; // Constant
I_0=1.5*10^-6; // Current in microA
V=0.15; // Forward bias voltage in volts
V_T=0.02586; // Thermal voltage in volts
// Calculation
R_ac=k_BT/(I_0*exp(V/V_T));
printf("Dynamic resistance = %0.2f W",R_ac);
// Result
// Dynamic resistance at forward bias = 52.17 W
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