2.1) Design a BJT common-emitter amplifier (use the figure A or B in former page!) with a gain of 9. The Q point parameters should be IC = 3 mA and VCE = 8 V. A power supply of 20 V is available. Manufacturers' spec sheets give: min = 100, hte = 200.Take VBE = 0.7 V.

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2.1) Design a BJT common-emitter amplifier (use the figure A or B in former page!)
with a gain of 9. The Q point parameters should be IC = 3 mA and VCE = ŠV.
A power supply of 20 V is available. Manufacturers' spec sheets give:
min = 100, ht. = 200.Take VBE = 0.7 V.
2.2) Analyze the BJT circuit given in figure – 1. Determine the collector currents for
DC current gains Boc = 100 and BDc = 200. Calculate the Q point of both cases.
Detemine the percentage change in Ic (collector current), Vcz (collector-emitter
current). Use the below formulas:
I
-I
V
-V
CE -100) 100
d-200) -100) 100 : % Ic
CE( -200)
% Ic
I
(-100)
Calculate the DC Load line of circuit.
CE( -100)
Voc-10"
R2=1k2
R1=300k
10V
Figure – 1
Transcribed Image Text:2.1) Design a BJT common-emitter amplifier (use the figure A or B in former page!) with a gain of 9. The Q point parameters should be IC = 3 mA and VCE = ŠV. A power supply of 20 V is available. Manufacturers' spec sheets give: min = 100, ht. = 200.Take VBE = 0.7 V. 2.2) Analyze the BJT circuit given in figure – 1. Determine the collector currents for DC current gains Boc = 100 and BDc = 200. Calculate the Q point of both cases. Detemine the percentage change in Ic (collector current), Vcz (collector-emitter current). Use the below formulas: I -I V -V CE -100) 100 d-200) -100) 100 : % Ic CE( -200) % Ic I (-100) Calculate the DC Load line of circuit. CE( -100) Voc-10" R2=1k2 R1=300k 10V Figure – 1
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