Determine the input impedance for this amplifier circuit. + Vcc RC R1 re ro RE CE R2 D) Rc//ro C) R1|| R2 B) R1 || R2|| (Bre) A) (Bre)
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- Consider the integrating amplifier circuit in Figure 2. Using nodal analysis, derive an expression for vout for the integrating amplifier. In the circuit in Figure 2, exchange the positions of the 0.1uF capacitor and the 5k resistor. a. Use nodal analysis to generate an expression for vout. b. Using this expression, explain what function this circuit performs on an input signal.How experimental setup is prepared for a CE transistor configuration. Drawits a h-parameter model. Find amplifier parameters given below using this model- (i) Current gain(ii) Input impedance(iii) Voltage Amplification (AVS) consideration source impedance(iv) Current Amplification (AIS) consideration source impedanceSince the transistors used in the circuit are B=100, ro=∞ a) Find the re1, re2 resistance values by performing the DC analysis for each amplifier stage separately. b) Draw the AC equivalent circuit of the amplifier circuit. c)Find the input and output impedance values for each amplifier stage. d) Find the voltage gains AV1, AV2 for each amplifier stage. e) Find the voltage value VL by finding the AV1 Voltage gain.
- Q.4/ Refer to the class AB power amplifier shown below:a. Determine the dc parameters VB(Q1), VB(Q2), ICQ, VCEQ(Q1), VCEQ(Q2).b. For the 5Vrms input, determine the power delivered to the load resistor.c. Determine the approximate input resistance seen by the signal source if ac=100Consider the operational amplifier circuit shown below. Assume the operational amplifier in the circuit is ideal. Determine the expression for the output signal, Vout, in terms of Vin,R1 and R2. Given the expression of the circuit [above’s output signal is Vout =3 − 0.5Vin, what is the maximum and minimum voltage that the input signal can have before the operational amplifier saturates.Amplifier circuit is show below has a single ac input and one ac output. Assuming 2N2222 transistor: 1- Determine the Q point, then illustrate it on the transistor I-V characteristic curves. 2- Is the transistor in the active region? Explain thoroughly. 3- Construct the T-model of the transistor with all parameters labelled and evaluated. Assume room temperature. 4- Draw a complete small signal circuit model, then find the voltage gain. Explain two characteristics of this amplifier. 5- Calculate the current gain, the input resistance, and the output resistance.
- Consider the common-source amplifier shown in Figure P11.50. The NMOS transistor has KP=50 μA/V2, L=5 μm, W=500 μm, Vto=1 V and rd=∞.a. Determine the values of IDQ, VDSQ and gm. b. Compute the voltage gain, input resistance, and output resistance, assuming that the coupling capacitors are short circuits for the ac signal. Repeat Problem P11.50 for an NMOS transistor having KP=50 μA/V2, W=600 μm, L=20 μm, Vto=2 V and rd=∞. Compare the gain with that attained in Problem P11.50.Figure 2 shows a typical BJT amplifier, with its parasitic capacitances displayed. The current gain of the transistor is B=150 and the voltage gain of the amplifier is Am =-125. The small signal resistances of the transistor are re =16 ohm and r0 = infinity, respectively. The values of resistors and capacitors in the figure are: R1 =80 kohm, R2 =20 Kohm, Rc = 2 Kohm, RE = 2 Kohm, Rs =50 W, RI=5 kohm, Cs=2 uF, Cc=2 uF, Ce =10 uF, Cbc =4 pF, Cbe = 10 pF, Cce =1 pF, Cwi = 4 pF, CWO = 9 pF, and Vcc = 20 V. a) Sketch a simplified circuit diagram of Figure 2 for high frequency analysis. b) Using the concept of "Miller effect capacitance", calculate the input and Output Miller effect capacitances of Figure 2, respectively. C) Determine the upper cut-off frequency of Figure 2 that is imposed by its input network only. d) Explain briefly the possible ways to increase the upper cut-off frequencv of this amplifier.The ac equivalent circuit for an amplifier is shown . Assume the capacitors have infinite value, RI = 750 Ω, RB = 100 kΩ, RC = 62 kΩ, and R3 = 100 kΩ. Calculate the voltage gain and input resistance for the amplifier if the BJT Q-point is (40μA, 10 V). Assume βo = 100 and VA = 75V.
- Amplifier circuit is show below has a single ac input and one ac output. Assuming 2N2222 transistor: Construct the T-model of the transistor with all parameters labelled and evaluated. Assume room temperature. Draw a complete small signal circuit model, then find the voltage gain. Explain two characteristics of this amplifier. Calculate the current gain, the input resistance, and the output resistance.According to the circuit in Figure 2:a. Describe the functions of the capacitors in the circuit and their effect on the circuit.b. If the input resistance of RS was added to the amplifier circuit, what would its effect be on the circuit? Please explain.c. Explain the effect of the RL load resistance to be connected to the output of the amplifier circuit after the capacitor on the Circuit's AV strengthening.Derive an expression for the gain Vo/Vs = f(R,△r) by the usage of an ideal operational amplifier model.