Answer Happy

This circuit derives the formula for the Ebers-moll
equation. If possible, please use MultiSim as circuit
simulator.
1. Construct the following circuit. 1 kn M-15 V 4.7 ΚΩ R₂ 5 Vom M 2N3904 2. Use different values of R.(e.g. 4.7 ΜΩ, 1 ΜΩ, 470 ΚΩ, 100 ΚΩ, 47 ΚΩ). Measure the collector current (Ic) and the base-emitter voltage (VBE). 3. Plot VBE VS. log Ic. Get the equation of the best-fit line. Assume room-temperature conditions. 4. Compare the slope of the best-fit line with the 60 mV/decade law. 5. From the y-intercept of the best-fit line, estimate Is. 6. For each value of R₁, calculate the base current (I) and the current gain (hFE). 7. Plot hFE vs. Ic. Comment on the graph