Response to the following:
Consider a transistor biased to operate in the active mode at a dc collector current IC. Calculate the collector signal current as a fraction of IC (i.e., ic/IC) for input signals vbe of +1 mV, -1 mV,+2 mV, -2 mV,+5 mV, -5 mV,+8 mV, -8 mV, +10 mV, -10 mV, +12 mV, and -12 mV. In each case do the calculation two ways:
(a Using the exponential characteristic, and
(b) Using the small-signal approximation.
Present your results in the form of a table that includes a column for the error introduced by the small-signal approximation. Comment on the range of validity of the small-signal approximation.