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Design voltage divider biased circuit to give Icq=5mA, VCEq=5V and β=100.
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Step 1: Circuit Diagram

enter image description here

Step 2: Finding Vcc

Vcc=2VCEQ

Vcc = 10V

Step 3: Finding RE

VRE=10

VRE=1V

We know that,

VRE=IERE

Finding IE,

IC=βIB

IB=IC/β=5mA/100..Ic=5mA(Given)

IB=50μA

IE=IB+IC

IE=5mA+50μA

IE=5.05mA

VRE=IERE

1V=5.05mA×RE

RE=198.01Ω

Step 4: Finding RC

Apply KVL from Vcc to Gnd through collector emitter,

VccICRCVCEQVRE=0

10V(5mA×RC)5V1V=0

RC=800Ω

Step 5: Finding R1 and R2

I1=10IB

I1 = 500µA

Apply KCL at base of transistor,

I2 = I1 - I_B

I2 = 500\mu A-50\mu A

I2= 450\mu A

Apply KVL from R2 to ground through base to emitter,

V_{R2} – V_{BE} – V_{RE} = 0

V_{R2} = 0.7V + 1V ……………Assume V_{BE}=0.7V

V_{R2}= 1.7V

Hence,

V_{R2} = I2 R2

1.7V = 450\mu A\times R2

R2= 3.77K\Omega

R1=\frac{Vcc-V_R2}{I1}

R1=\frac{10V-1.7V}{500\mu A}

R1=16.6K\Omega

Step 6: Designed Circuit Diagram

enter image description here

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