hi
I have some problems about solving the BJT circuit
Here is my problem
For the circuit, IA = 3 mA and VCE = 5.4 V
VBE(on) = 0.7 V and btea= 50,
(a). Find RA, RC, and IC3
(b). Find the quiescent power dissipated in transistor Q3 (DC bias)
part A
VBE(on) = 0.7 V and beta = 50,
IA=0(VBEVEE)/RA
RA=3100 ohm
IA=Iref+IB1+IB2
Since
Iref=IC1=IC2,
IB1=IB2,
IA=IC2+IC2(1/beta)+IC2(1/beta)
IC2=2.88mA
I am confused about whether Io is equal to Ic3 or not.(Io=Ic3)
And I assume Io=Ic3
VCCVEE=IC3*RC+VCE
20=2.88m*RC+5.4
RC=5069 ohm
part B
P = IB3*VBE + IC3*VCE
P=0*0.7+5.4*2.88m
P=0.016W
Is my calculation correct?
I have some problems about solving the BJT circuit
Here is my problem
For the circuit, IA = 3 mA and VCE = 5.4 V
VBE(on) = 0.7 V and btea= 50,
(a). Find RA, RC, and IC3
(b). Find the quiescent power dissipated in transistor Q3 (DC bias)
part A
VBE(on) = 0.7 V and beta = 50,
IA=0(VBEVEE)/RA
RA=3100 ohm
IA=Iref+IB1+IB2
Since
Iref=IC1=IC2,
IB1=IB2,
IA=IC2+IC2(1/beta)+IC2(1/beta)
IC2=2.88mA
I am confused about whether Io is equal to Ic3 or not.(Io=Ic3)
And I assume Io=Ic3
VCCVEE=IC3*RC+VCE
20=2.88m*RC+5.4
RC=5069 ohm
part B
P = IB3*VBE + IC3*VCE
P=0*0.7+5.4*2.88m
P=0.016W
Is my calculation correct?
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