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Problem #1 : For the Circut in the figure assume β-100 and VA-120. A) Calculate the...
In the CE amplifier shown below, a. Find the transistor DC operating points. Check what region...
In the CE amplifier shown below, a. Find the transistor DC operating points. Check what region of operation the transistor is biased at. b. Calculate the small signal voltage gain, the input resistance looking into the base of the transistor, and the output resistance looking down at the collector. c. Find the small signal current gain, 으 VBE,ON = 0.6V, and β = 100, VA = 00, Base current may be ignored if possible
2. Consider the amplifier to the right. This is a common base amplifier Assume that the...
2. Consider the amplifier to the right. This is a common base amplifier Assume that the values of r ro, B, and gm, are known, or have bee found from the DC analysis. For the following questions, you have t show all steps of the circuit analysis. cC (a) Draw the small-signal version of this amplifier Include th Early effect resistance in the pi-model. In other words, the pi model should be: be To (b) Use the circuit of part...
4. The amplifier shown below has Rsig-RL 1kQ. Rc 1kQ, RB 47 kQ. β 100, Cc1 a) Find the dc collect...
4. The amplifier shown below has Rsig-RL 1kQ. Rc 1kQ, RB 47 kQ. β 100, Cc1 a) Find the dc collector current of the transistor b) Find gm and IT c) Neglecting ro, find the midband voltage gain from base to collector (neglect the effect of RB) d) Use the gain obtained in part (c) to find the component of Rin that arises as a result of RB. Hence find Rin. e) Find the overall gain at midband f) Find...
Problem 2: BJT Small-Signal Voltage Amplifiers in the lectures, we covered in detail the analysis of an npn BJT amplifier that utilizes a single-supply DC biasing. In this problem, you will meet...
Problem 2: BJT Small-Signal Voltage Amplifiers in the lectures, we covered in detail the analysis of an npn BJT amplifier that utilizes a single-supply DC biasing. In this problem, you will meet two additional amplifier architectures- one that is based on dual DC supplies combined with a DC current source, and the other that utilizes a pnp BJT with single-supply biasing. In both problems (below) you need to manually find the amplifier's Q-point (that is, the DC values of Ic...
The NMOS transistor in the circuit below has the following parameters: (W/L).(KP2)-826pA/V2, and VA-50V. ,-0.9V, K...
The NMOS transistor in the circuit below has the following parameters: (W/L).(KP2)-826pA/V2, and VA-50V. ,-0.9V, K a. Calculate the drain-to-source resistance (rds) value. (Hint: VA- 1/) b. What is the value of the transconductance (gm)? (ignore A ONLY for this part) C. What is the value of the DC voltage Vo? (ignore λ ONLY for this part) d. Draw the small-signal equivalent circuit (including rds) e. Find the equation of the small-signal voltage gain Av-Vo/vi. This equation should be in...
Small signal (AC) model for the npn BJT is given below. According to this picture, which...
Small signal (AC) model for the npn BJT is given below. According to this picture, which is not correct for this transistor if the DC base current (B) is known to be 0.05mA and gain (ß) is 125, Early voltage is given (VA-100 V at room temperature (Vt-25 mVT Vbe <t> gnNbe'.ro Bo-ㄧㄧ 10 NPN π model T model a transconductance gm- 250mS -b. AC emitter resistance ㈨ is-4ohms c Emitter efficiency a is 90% d- Has a finite output...
A) For the common source amplifier below, calculate the small signal gain Av-Vovi (from the trans...
Please do part a only
a) For the common source amplifier below, calculate the small signal gain Av-Vovi (from the transistor gate to the output node), the input resistance Rin, the output resistance Rout, and the overall voltage gain Gv-Vo/Vs (from the voltage source to the output node. Assume that the capacitors act as AC shorts and that the transistor's ro is infinite (can be neglected). Note, you can use the small signal parameters that you solved for in Problem...
4. For the amplifier in the figure below use the parameters in the table: +Vcc Re VBE- 0.7V, Ri- ...
4. For the amplifier in the figure below use the parameters in the table: +Vcc Re VBE- 0.7V, Ri- 1002, R1-160k2, R2-320k2 R3-200k2, R6-40 k2, Rc-60k2, Vcc- 12V, Ry Do a) Draw the DC equivalent circuit and calculate the Q-point. c) Draw the AC equivalent circuit with the small signal model for the transistor. d) Calculate the voltage gain, Av-Vo/vi. Assume ro infinite. e) Draw the circuit to find the amplifier input resistance (Rin). Calculate Rin f Draw the circuit...
For the circuit shown below, let Vcc 9 V R2 RE-0.11 kQ, R1 3.6 k2. and R2 -5.6 kQ. The transistor parameters are β-200, VBE(on)-OTV, VA-100 V and VT = 0.026 V. (a) Determine the quiescent value o...
For the circuit shown below, let Vcc 9 V R2 RE-0.11 kQ, R1 3.6 k2. and R2 -5.6 kQ. The transistor parameters are β-200, VBE(on)-OTV, VA-100 V and VT = 0.026 V. (a) Determine the quiescent value of IEQ (b) Find the small-signal voltage gain Av Vo/vs (c) Determine the output resistance R, looking into output terminals Av= 0.5589 Ro-0.4688 Ω Ro-0.9118 Ω leQ- 23.76 mA Ra " 0.6538 Ω leo 39.52 mA A, 0.9938
For the circuit shown below,...
0.7V, and Va 100V. Find: -For the operational amplifier of Figure 4 assume all transistors have β...
0.7V, and Va 100V. Find: -For the operational amplifier of Figure 4 assume all transistors have β-100, Find the de emitter currents and the de collector voltage of all transistors. The de voltage at the inputs is OV and the de output voltage is held at 0V (by negative feedback, not shown). Neglect the de base currents for this part. Find the (differential) voltage gain of the amplifier with R-10 k2. Assume the impedance of the capacitor is very large....
In the CE amplifier shown below, a. Find the transistor DC operating points. Check what region of operation the transistor is biased at. b. Calculate the small signal voltage gain, the input resistance looking into the base of the transistor, and the output resistance looking down at the collector. c. Find the small signal current gain, 으 VBE,ON = 0.6V, and β = 100, VA = 00, Base current may be ignored if possible
2. Consider the amplifier to the right. This is a common base amplifier Assume that the values of r ro, B, and gm, are known, or have bee found from the DC analysis. For the following questions, you have t show all steps of the circuit analysis. cC (a) Draw the small-signal version of this amplifier Include th Early effect resistance in the pi-model. In other words, the pi model should be: be To (b) Use the circuit of part...
4. The amplifier shown below has Rsig-RL 1kQ. Rc 1kQ, RB 47 kQ. β 100, Cc1 a) Find the dc collector current of the transistor b) Find gm and IT c) Neglecting ro, find the midband voltage gain from base to collector (neglect the effect of RB) d) Use the gain obtained in part (c) to find the component of Rin that arises as a result of RB. Hence find Rin. e) Find the overall gain at midband f) Find...
Problem 2: BJT Small-Signal Voltage Amplifiers in the lectures, we covered in detail the analysis of an npn BJT amplifier that utilizes a single-supply DC biasing. In this problem, you will meet two additional amplifier architectures- one that is based on dual DC supplies combined with a DC current source, and the other that utilizes a pnp BJT with single-supply biasing. In both problems (below) you need to manually find the amplifier's Q-point (that is, the DC values of Ic...
The NMOS transistor in the circuit below has the following parameters: (W/L).(KP2)-826pA/V2, and VA-50V. ,-0.9V, K a. Calculate the drain-to-source resistance (rds) value. (Hint: VA- 1/) b. What is the value of the transconductance (gm)? (ignore A ONLY for this part) C. What is the value of the DC voltage Vo? (ignore λ ONLY for this part) d. Draw the small-signal equivalent circuit (including rds) e. Find the equation of the small-signal voltage gain Av-Vo/vi. This equation should be in...
Small signal (AC) model for the npn BJT is given below. According to this picture, which is not correct for this transistor if the DC base current (B) is known to be 0.05mA and gain (ß) is 125, Early voltage is given (VA-100 V at room temperature (Vt-25 mVT Vbe <t> gnNbe'.ro Bo-ㄧㄧ 10 NPN π model T model a transconductance gm- 250mS -b. AC emitter resistance ㈨ is-4ohms c Emitter efficiency a is 90% d- Has a finite output...
Please do part a only
a) For the common source amplifier below, calculate the small signal gain Av-Vovi (from the transistor gate to the output node), the input resistance Rin, the output resistance Rout, and the overall voltage gain Gv-Vo/Vs (from the voltage source to the output node. Assume that the capacitors act as AC shorts and that the transistor's ro is infinite (can be neglected). Note, you can use the small signal parameters that you solved for in Problem...
4. For the amplifier in the figure below use the parameters in the table: +Vcc Re VBE- 0.7V, Ri- 1002, R1-160k2, R2-320k2 R3-200k2, R6-40 k2, Rc-60k2, Vcc- 12V, Ry Do a) Draw the DC equivalent circuit and calculate the Q-point. c) Draw the AC equivalent circuit with the small signal model for the transistor. d) Calculate the voltage gain, Av-Vo/vi. Assume ro infinite. e) Draw the circuit to find the amplifier input resistance (Rin). Calculate Rin f Draw the circuit...
For the circuit shown below, let Vcc 9 V R2 RE-0.11 kQ, R1 3.6 k2. and R2 -5.6 kQ. The transistor parameters are β-200, VBE(on)-OTV, VA-100 V and VT = 0.026 V. (a) Determine the quiescent value of IEQ (b) Find the small-signal voltage gain Av Vo/vs (c) Determine the output resistance R, looking into output terminals Av= 0.5589 Ro-0.4688 Ω Ro-0.9118 Ω leQ- 23.76 mA Ra " 0.6538 Ω leo 39.52 mA A, 0.9938
For the circuit shown below,...
0.7V, and Va 100V. Find: -For the operational amplifier of Figure 4 assume all transistors have β-100, Find the de emitter currents and the de collector voltage of all transistors. The de voltage at the inputs is OV and the de output voltage is held at 0V (by negative feedback, not shown). Neglect the de base currents for this part. Find the (differential) voltage gain of the amplifier with R-10 k2. Assume the impedance of the capacitor is very large....
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