4.18 Consider a diode biased at 1 mA. Find the change in current as a result of changing the voltage by (a) –10 mV, (b) –5 mV, (c) +5 mV, and (d) +10 mV. In each case, do the calculations (i) using the small-signal model and (ii) using the exponential model.
(a) –0.40, –0.33 mA; (b) –0.20, –0.18 mA; (c) +0.20, +0.22 mA; (d) +0.40, +0.49 mA
D4.19 D
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