I would appreciate it if someone could help me solve the following problem:
Find R_E step by step.
NPN BJT
Positive V_CC=10V
R_Collector=present, value not provided
R_Emitter=present, value not provided
Negative V_EE=6V
V_BE=0.6V
V_CE=3V
ß=50
Base connected to reference point, chassis ground, no resistor present at base.
Work:
V_CC+V_EE=V_RC+V_CE+V_RE
V_CC+V_EE=R_C*I_C+V_CE+R_E*I_E
V_CC+V_EE=R_C*I_C+V_CE+R_E(I_C+I_B)
I_C=ß*I_B
V_EE=V_BE+V_RE
V_EE=V_BE+R_E*I_E
V_EE=V_BE+R_E(I_C+I_B)
V_EE=V_BE+R_E(I_C+I_C/ß)
V_EE=V_BE+R_E*I_C(1+1/ß)
How does one find I_C and R_E from this?
Find R_E step by step.
NPN BJT
Positive V_CC=10V
R_Collector=present, value not provided
R_Emitter=present, value not provided
Negative V_EE=6V
V_BE=0.6V
V_CE=3V
ß=50
Base connected to reference point, chassis ground, no resistor present at base.
Work:
V_CC+V_EE=V_RC+V_CE+V_RE
V_CC+V_EE=R_C*I_C+V_CE+R_E*I_E
V_CC+V_EE=R_C*I_C+V_CE+R_E(I_C+I_B)
I_C=ß*I_B
V_EE=V_BE+V_RE
V_EE=V_BE+R_E*I_E
V_EE=V_BE+R_E(I_C+I_B)
V_EE=V_BE+R_E(I_C+I_C/ß)
V_EE=V_BE+R_E*I_C(1+1/ß)
How does one find I_C and R_E from this?
Last edited: