The load line of Figure 4, was obtained from the common emitter fixed biased circuit. Ic (mA) 60 μΑ 12 50 μΑ 10 40 μΑ 8 30 μΑ Q-point 20 μΑ 4 10 μΑ 2 IB = 0 µA 10 15 20 VCE Figure 4 a) Design the biased circuit using silicon transistor and , by proposing the values of the following: Vcc, Rc,a, RB b) What would be the saturation current and cut-off voltage for the load line for your circuit design for each of the following alterations? i. Reduce the value of Vcc by 20% ii. Increase the value of RB by 10% iii. Increase the value of Rc by 20% c) Transistors are widely used in digital logic circuits and switching applications. For this to be achieved in a case of common-emitter fixed biased configuration, what voltage should be applied to the base resistor for OFF STATE and; for ON state, assuming that the voltage at the collector resistor is constant at +Vc. In each case draw the equivalent circuit.

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The load line of Figure 4, was obtained from the common emitter fixed biased circuit.
Ic (mA)
60 μΑ
12
50 μΑ
10
40 μΑ
8
30 μΑ
Q-point
20 μΑ
4
10 μΑ
2
IB = 0 µA
10
15
20
VCE
Figure 4
a) Design the biased circuit using silicon transistor and , by proposing the values of the
following: Vcc, Rc,a, RB
b) What would be the saturation current and cut-off voltage for the load line for your circuit
design for each of the following alterations?
i. Reduce the value of Vcc by 20%
ii. Increase the value of RB by 10%
iii. Increase the value of Rc by 20%
c) Transistors are widely used in digital logic circuits and switching applications. For this to
be achieved in a case of common-emitter fixed biased configuration, what voltage should
be applied to the base resistor for OFF STATE and; for ON state, assuming that the
voltage at the collector resistor is constant at +Vc. In each case draw the equivalent
circuit.
Transcribed Image Text:The load line of Figure 4, was obtained from the common emitter fixed biased circuit. Ic (mA) 60 μΑ 12 50 μΑ 10 40 μΑ 8 30 μΑ Q-point 20 μΑ 4 10 μΑ 2 IB = 0 µA 10 15 20 VCE Figure 4 a) Design the biased circuit using silicon transistor and , by proposing the values of the following: Vcc, Rc,a, RB b) What would be the saturation current and cut-off voltage for the load line for your circuit design for each of the following alterations? i. Reduce the value of Vcc by 20% ii. Increase the value of RB by 10% iii. Increase the value of Rc by 20% c) Transistors are widely used in digital logic circuits and switching applications. For this to be achieved in a case of common-emitter fixed biased configuration, what voltage should be applied to the base resistor for OFF STATE and; for ON state, assuming that the voltage at the collector resistor is constant at +Vc. In each case draw the equivalent circuit.
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