Problem

a. Repeat parts (a) through (e) of Problem 1 for the network of Fig. 4. Change β to 180 in...

a. Repeat parts (a) through (e) of Problem 1 for the network of Fig. 4. Change β to 180 in part (b).

b. What general conclusions can be made about networks in which the condition β RE > 10R2 is satisfied and the quantities I C and V CE are to be determined in response to a change in β?

Problem 1: a. Determine IC and VCE for the network of Fig 1.

b. Change β to 120 (50% increase), and determine the new values of IC and VCE for the network of Fig. 1.

c. Determine the magnitude of the percentage change in I C and V CE using the following equations:

d. Compare the solution to part (c) with the solutions obtained for parts (c) and (f) of Problem 2.

e. Based on the results of part (d), which configuration is least sensitive to variations in β?

FIG. 1

Problem 2: a. Determine IC and VCE for the network of Fig. 2.

b. Change β to 180 and determine the new value of IC and VCE for the network of Fig. 2.

c. Determine the magnitude of the percentage change in IC and VCE using the following equations:

d. Determine IC and VCE for the network of Fig. 3.

e. Change β to 187.5 and determine the new value of IC and VCE for the network of Fig. 4.

f. Determine the magnitude of the percentage change in IC and VCE using the following equations:

g. In each of the above, the magnitude of β was increased 50%. Compare the percentage change in IC and VCE for each configuration, and comment on which seems to be less sensitive to changes in β.

FIG. 2