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					2009/2010


                             EEE510 Handout - Bipolar
1.




                                                     Ic




                                          Ib


                                                     Ie




                            Figure 1. Transistor Operation
A silicon npn transistor with  =0.99 and ICBO = 10 A is connected as shown in Figure
                                                   11

1. Calculate Ic, Ie and Vce.
2009/2010



2.




                            Figure 2. Transistor performance
For the circuit Figure 2 , let  =0.98 and VBE=0.7V. Find, base current, collector current
and Vout ( DC Voltage ).


3.




                             Figure 3. Transistor Operation
What is Beta of a BJT?
Calculate Beta for this transistor (  =0.99) and when Ib = 10µA, 1mA and 100 mA,
what are the collector current?
2009/2010



4.




                            Figure 4. Transistor performance
For the circuit Figure 4 , let  =0.98 , ICBO = 0 and VBE=0.7V. Find, base current,
collector current and Vout, if R4 is changed to 9k Ohm, does transistor is biased
properly?

				
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