Circuit and Electronic Technique
Simplified
Forward-Active Region Model
(Example 3)
•Problem: Find Q-point • Given data: bF = 50, bR = 1 VBC = VB - VC = -9 V • Assumptions: Forward-active region of operation, VBE = 0.7 V
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Circuit and Electronic Technique
Simplified
Forward-Active Region Model (Example 2)• Problem: Estimate terminal currents, base-emitter and base-collector voltages.• Given data: IS = 10-16 A, aF = 0.95, VC = +5 V, IB = 100 mA • Assumptions: Simplified transport model assumptions, room temperature operation, VT = 25.0 mV
(20 pts) The BJT in the circuit below has the following specifications: • in active mode...
(20 pts) The BJT in the circuit below has the following specifications: • in active mode ß = 50, VBE = 0.76 V, and • in saturation VCEsat = 0.2 V. Find VE, VB and Vc and determine the mode of operation (active, saturation, cut-off). Given values are: /= 1 mA, Rg=200 kN and Re =4 k12. I Vc RB VB. VEم RE
(2+5 pts) Consider the bias circuit below for a transistor amplifier designed for active region operation....
(2+5 pts) Consider the bias circuit below for a transistor amplifier designed for active region operation. The desired bias point parameters are lg = 3 mA and Ic = 2.97 mA. Assume VBE- 0.7 V and VT=25 mV. Determine the emitter voltage VE . Choose the best answer. VCC +15 V Vc RBB VB LVE V BB RE 500 S2 1.49 V O2v 01.5V O 0.7V
Problem 4 (20 %) For the circuit shown in Figure 4 determine IB, IC, and VC....
Problem 4 (20 %) For the circuit shown in Figure 4 determine IB,
IC, and VC. Data VCC=9 V VBB=4 V R2= 165 k R1= 2.5 k Transistor
Assume VBE ≈ 0.7 V and =150
Derive all the results. Give the answers with the preestablished
prefix.
FAVOR DIBUJAR LOS CIRCUITOS
Problem 4 (206) For the circuit shown in Figure 4 determine IB, I, and Vc. Data Ve=9 V V=4V R = 165 kg R=2.5k_2 Transistor Assume VE 0.7 V and...
It Kind of goes without saying but if you have no knowledge than dont comment or try and answer this question you dope Questions 1-3 below are about the amplifier circuit of Figure 1. Here Vcc is a...
It
Kind of goes without saying but if you have no knowledge than dont
comment or try and answer this question you dope
Questions 1-3 below are about the amplifier circuit of Figure 1. Here Vcc is a fixed voltage The base voltage vB(t) is time-varying, and is of the form vB(t) V(t) where VB is a DC offset, and vb(t) is a time-varying purely AC signal. Suppose the amplitude of vb is A. Assume that the capacitor C is...
Q.2. (a) Determine the region of operation for the following transistor when B = 100 and...
Q.2. (a) Determine the region of operation for the following transistor when B = 100 and Ves = 0.7 V. Also find I and V. (10) I + 5 V -15 V 1K 1K V 0 (b) For the circuit shown below, let B = 100 and VBE = 0.7 V. (a) Find VTH and RTH for the base circuit. (b) Determine Ice and VcEO + 5V +15V 500 ΚΩ 50 ΚΩ + 3V 500 ΚΩ 70 ΚΩ 5 ΚΩ...
The following circuit is used for questions Q5 through Q8. Assume all transistors are in forward...
The following circuit is used for questions Q5 through Q8. Assume all transistors are in forward active mode. Suppose that B = 100 for each transistor and that VBE = 0.7 V for each transistor while in forward active mode. Suppose that VT = 0.025 mV. Ignore r, throughout the next four questions pertaining to this circuit. +20 V +20 V +20 V 10 kl 50 k 2 Im +20 V Rout - 1.2 kr} Zur 32018 3892 Fig.2 Q.6...
6.5 BI C2 Cl sig in 0 Design the bias circuit of the CE amplifier shown...
6.5 BI C2 Cl sig in 0 Design the bias circuit of the CE amplifier shown to obtain IE= 0.5 mA and Vc= +6 V. Design for a dc voltage at the base of 5 V and a current through RB2 of 50 μΑ. Let Vcc-+15 V, β-100, and VBE 0.7 V. a) Specify the values of RBi, RB2, RE, and Rc b) Also give the values of the BJT small-signal parameters gm, rr , and ro at the bias...
Given RB = 240 k., Rc = 1.2 k., and = 120. Determine: a) IB b)...
Given RB = 240 k., Rc = 1.2 k., and = 120. Determine: a) IB b) Ic c) le d) VBE e) VCE f) Mode of operation (cutoff, active, saturation) Given RB = 47 kO2, Rc = 1.2 k2 and B = 120. Determine: g) Mode of operation (cutoff, active, saturation) O 8V For the circuit shown in Question #2, Vcc = 16 V, RB = 620 kl, Rc = 2 kN and B = 120. a) Determine le b)...
Find the mid-band gain of the circuit AM as well as the corner frequencics due to...
Find the mid-band gain of the circuit AM as well as the corner frequencics due to parasitic capacitance fz, f., and fir. Assume f-150), VBE 0.7 V, VA = oo V, Cr = 35 pF, and C,, = 4 pF 10 V 5 k2 42.5 k23 C2 10 kS2 02 20.5 kg 0.1 kΩ CCI 21 28.3 kΩ 5.4 kS2 -10 V The necessary formulas are given below: 1- A BJT Emitter Bias BJT Relationships and V C,max VC.mx t...
(20 pts) The BJT in the circuit below has the following specifications: • in active mode ß = 50, VBE = 0.76 V, and • in saturation VCEsat = 0.2 V. Find VE, VB and Vc and determine the mode of operation (active, saturation, cut-off). Given values are: /= 1 mA, Rg=200 kN and Re =4 k12. I Vc RB VB. VEم RE
(2+5 pts) Consider the bias circuit below for a transistor amplifier designed for active region operation. The desired bias point parameters are lg = 3 mA and Ic = 2.97 mA. Assume VBE- 0.7 V and VT=25 mV. Determine the emitter voltage VE . Choose the best answer. VCC +15 V Vc RBB VB LVE V BB RE 500 S2 1.49 V O2v 01.5V O 0.7V
Problem 4 (20 %) For the circuit shown in Figure 4 determine IB,
IC, and VC. Data VCC=9 V VBB=4 V R2= 165 k R1= 2.5 k Transistor
Assume VBE ≈ 0.7 V and =150
Derive all the results. Give the answers with the preestablished
prefix.
FAVOR DIBUJAR LOS CIRCUITOS
Problem 4 (206) For the circuit shown in Figure 4 determine IB, I, and Vc. Data Ve=9 V V=4V R = 165 kg R=2.5k_2 Transistor Assume VE 0.7 V and...
It
Kind of goes without saying but if you have no knowledge than dont
comment or try and answer this question you dope
Questions 1-3 below are about the amplifier circuit of Figure 1. Here Vcc is a fixed voltage The base voltage vB(t) is time-varying, and is of the form vB(t) V(t) where VB is a DC offset, and vb(t) is a time-varying purely AC signal. Suppose the amplitude of vb is A. Assume that the capacitor C is...
Q.2. (a) Determine the region of operation for the following transistor when B = 100 and Ves = 0.7 V. Also find I and V. (10) I + 5 V -15 V 1K 1K V 0 (b) For the circuit shown below, let B = 100 and VBE = 0.7 V. (a) Find VTH and RTH for the base circuit. (b) Determine Ice and VcEO + 5V +15V 500 ΚΩ 50 ΚΩ + 3V 500 ΚΩ 70 ΚΩ 5 ΚΩ...
The following circuit is used for questions Q5 through Q8. Assume all transistors are in forward active mode. Suppose that B = 100 for each transistor and that VBE = 0.7 V for each transistor while in forward active mode. Suppose that VT = 0.025 mV. Ignore r, throughout the next four questions pertaining to this circuit. +20 V +20 V +20 V 10 kl 50 k 2 Im +20 V Rout - 1.2 kr} Zur 32018 3892 Fig.2 Q.6...
6.5 BI C2 Cl sig in 0 Design the bias circuit of the CE amplifier shown to obtain IE= 0.5 mA and Vc= +6 V. Design for a dc voltage at the base of 5 V and a current through RB2 of 50 μΑ. Let Vcc-+15 V, β-100, and VBE 0.7 V. a) Specify the values of RBi, RB2, RE, and Rc b) Also give the values of the BJT small-signal parameters gm, rr , and ro at the bias...
Given RB = 240 k., Rc = 1.2 k., and = 120. Determine: a) IB b) Ic c) le d) VBE e) VCE f) Mode of operation (cutoff, active, saturation) Given RB = 47 kO2, Rc = 1.2 k2 and B = 120. Determine: g) Mode of operation (cutoff, active, saturation) O 8V For the circuit shown in Question #2, Vcc = 16 V, RB = 620 kl, Rc = 2 kN and B = 120. a) Determine le b)...
Find the mid-band gain of the circuit AM as well as the corner frequencics due to parasitic capacitance fz, f., and fir. Assume f-150), VBE 0.7 V, VA = oo V, Cr = 35 pF, and C,, = 4 pF 10 V 5 k2 42.5 k23 C2 10 kS2 02 20.5 kg 0.1 kΩ CCI 21 28.3 kΩ 5.4 kS2 -10 V The necessary formulas are given below: 1- A BJT Emitter Bias BJT Relationships and V C,max VC.mx t...
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