AIM: To determine the d.c. gain of a bipolar transistor.

                                     

1.   Connect the circuit diagram as shown in Figure 1.
2.   Ask the Supervisor to check the circuit connection.
3.   Copy Table 1 into your answer booklet.

Table 1

Ib(µA)	Ic(mA)
100
200
300
400
500

4. Close switch SW1.
5. Adjust Vcc until VCE = 10 V.
6. Close switch SW1.
7. Adjust the variable potentiometer until Ib = 100 µA.
8. Record in Table 1, the corresponding reading of Ic.
9. Repeat steps (g) and (h) for the other values of Ib in Table 1.
10. Plot a graph of Ic (mA) on the vertical axis against Ib (µA) on the horizontal axis.
11. Determine the slope of the graph.