Given a Fixed-Biased transistor circuit with Beta DC is 200 , voltage at common collector is +22v ,base supply voltage is +11V, Base resistor is 47kOhms , collector resistor is 390 ohms ,Voltage at Base-emitter junction  is 0.7v. Determine the Q-point of collector current and Voltage at collector-emitter junction. These might be help as a guide to solve the problem.

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1) Given a Fixed-Biased transistor circuit with Beta DC is 200 , voltage at common collector is +22v ,base supply voltage is +11V, Base resistor is 47kOhms , collector resistor is 390 ohms ,Voltage at Base-emitter junction  is 0.7v. Determine the Q-point of collector current and Voltage at collector-emitter junction.

These might be help as a guide to solve the problem.

2. Emitter Bias
Determine IB, Ic, Vce, Vc, VB, and Step 1: Solve for Ig.
VE in the given circuit with the
base-to-emitter voltage of 0.7v.
Step 2: Solve for Ic.
Vcc - VBE
Ic = BlB
Ic = (50)40.12µA
Ic = 2.01mA
IB
Rp + (B + 1)RE
20v – 0.7v
IB =
430kN + (50 + 1)1kN
Ig = 40.12µA
Step 3: Solve for VCE.
Step 4: Solve for Vc, VB, and VẸ-
Vce = Vcc – Ic(Rc + Rg)
Vce = 20v – 2.01mA(2kN + 1kN)
Vce = 13.97v
VE = IĘRE = IcRĘ
= 2.01mA(1kN) = 2.01v
Vc = VCE + Vg
*Property of STI
Page 4 of 6
03 Handout 1
| student.feedback@sti.edu
STI
IT1916
+20v
= 13.97v + 2.01v = 15.98v
VB = VBE + VE
= 0.7v + 2.01 = 2.71v
430kN
2kN
B = 50
O Vo
VIN
1kN
GND
Transcribed Image Text:2. Emitter Bias Determine IB, Ic, Vce, Vc, VB, and Step 1: Solve for Ig. VE in the given circuit with the base-to-emitter voltage of 0.7v. Step 2: Solve for Ic. Vcc - VBE Ic = BlB Ic = (50)40.12µA Ic = 2.01mA IB Rp + (B + 1)RE 20v – 0.7v IB = 430kN + (50 + 1)1kN Ig = 40.12µA Step 3: Solve for VCE. Step 4: Solve for Vc, VB, and VẸ- Vce = Vcc – Ic(Rc + Rg) Vce = 20v – 2.01mA(2kN + 1kN) Vce = 13.97v VE = IĘRE = IcRĘ = 2.01mA(1kN) = 2.01v Vc = VCE + Vg *Property of STI Page 4 of 6 03 Handout 1 | student.feedback@sti.edu STI IT1916 +20v = 13.97v + 2.01v = 15.98v VB = VBE + VE = 0.7v + 2.01 = 2.71v 430kN 2kN B = 50 O Vo VIN 1kN GND
Emitter Bias
Vcc
Emitter bias is a very good and stable
way to bias transistors if both positive
and negative power supplies are
available. Emitter bias fluctuates very
Vcc – VBe
Rp + (ß + 1)Rg
Ic = BlB
Vce = Vcc – Ic(Rc + RE)
VE = IĘRE
Vc = Vce + Vg or Vc = Vcc – IcRc
VB = Vcc - IBRB or VB = VBE + VẸ
IR =
Rp
Rc
I, Bpc,
little with temperature variation and
transistor replacement.
VIN
VBE
VE
RE
GND=
Transcribed Image Text:Emitter Bias Vcc Emitter bias is a very good and stable way to bias transistors if both positive and negative power supplies are available. Emitter bias fluctuates very Vcc – VBe Rp + (ß + 1)Rg Ic = BlB Vce = Vcc – Ic(Rc + RE) VE = IĘRE Vc = Vce + Vg or Vc = Vcc – IcRc VB = Vcc - IBRB or VB = VBE + VẸ IR = Rp Rc I, Bpc, little with temperature variation and transistor replacement. VIN VBE VE RE GND=
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