a. Using the characteristics of Fig. 3.24 , determine b ac at I_C = 14 mA and V_CE = 3 V.

b. Determine β dc at I_C = 1 mA and V_CE = 8 V.
c. Determine β ac at I_C = 14 mA and V_CE = 3 V.
d. Determine β dc at I_C = 1 mA and V_CE = 8 V.
e. How does the level of b ac and b dc compare in each region?
f. Is the approximation bdc = bac a valid one for this set of characteristics?

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20 mA 18 mA Venical per div 2 mA 16 mA 70 HA 14 mA Horizontal 60 uA per div 12 mA 50 uA 10 mA H 40 A S mA Per Step 30 uA 10 uA 6 mA 20 uA 4 mA A or gm 10 μΑ per div 200 2 mA OmA OV IV 2V 3V 4V 5V 6V 7V 8V 9V 10V