2. The following circuit shows a discrete common emitter BJT amplifier. The BJT has B-100, C.-5 pF, C-1 pF and VA , Vr 25 mV (1) Find DC collector current (lc), transconductance (g-), te and re (2) Draw small signal equivalent circuit of the amplifier in low frequency band, and determine low comer frequency(»L) using approximation method (using time constants). (3) Draw small signal equivalent circuit of the amplifier in high frequency band, and determine the high corner frequency( tn) using approximation method (using time constants). vcc 9v RC 20k0 O vout Raig C1 RL 200 20ka RB Vig 1MO CE 10F 0. 1mA

Introductory Circuit Analysis (13th Edition)
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2. The following circuit shows a discrete common emitter BJT amplifier.
The BJT has B-100, Ca=5 pF, C, = 1 pF and VA-0, VT 25 mV
(1) Find DC collector current (lc), transconductance (g-), Te and re
(2) Draw small signal equivalent circuit of the amplifier in low frequency band, and determine low
comer frequency(OL) using approximation method (using time constants).
(3) Draw small signal equivalent circuit of the amplifier in high frequency band, and determine
the high coner frequency( n) using approximation method (using time constants).
VcC 9V
RC
20ka
O vout
1F
Raig
CC1
RL
20k0
20ka
RB
Vsig
CE
1MO
10F
0. 1mA
Transcribed Image Text:2. The following circuit shows a discrete common emitter BJT amplifier. The BJT has B-100, Ca=5 pF, C, = 1 pF and VA-0, VT 25 mV (1) Find DC collector current (lc), transconductance (g-), Te and re (2) Draw small signal equivalent circuit of the amplifier in low frequency band, and determine low comer frequency(OL) using approximation method (using time constants). (3) Draw small signal equivalent circuit of the amplifier in high frequency band, and determine the high coner frequency( n) using approximation method (using time constants). VcC 9V RC 20ka O vout 1F Raig CC1 RL 20k0 20ka RB Vsig CE 1MO 10F 0. 1mA
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