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5.141 For the circuit in Fig. P5.141, find the input resis- tance Rin and the voltage...
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7.133 For the circuit below, find the input resistance Rin and the voltage gain v./Vsig. Assume that the source provides a small signal Vsig and that ß = 100. 0.5 mA tovo § 5 KN 100 kN 3 Rsig = 50 12 U18
7.53 For the circuit shown in Fig. P7.53, draw a complete small-signal equivalent circuit utilizing an appropriate T model for the BJT (use a =0.99). Your circuit should show the values of all components, including the model parameters. What is the input resistance R ? Calculate the overall voltage gain (v,/v). (also find A, for this amp) sig +5 V RC 12 kΩ C2 RL 12 ΚΩ Rsig 75 N ) 0.33 mA Vsig Rin Figure P7.53
it of Fig. P6.120, the BJT is biased with nt source, and vsig is a small sine-wave signal. Fi 6.120 In the circuit +3 V 20 kΩ 20 kΩ 20 kΩ 200 kΩ 0.1 mA Rin Figure P6.120 Find Rin and the gain terag. Assume β 100. If the amplitude of the signal Vbe is to be limited to 5 mV, what is the largest signal at the input? What is the corresponding signal at the output? sig
6.108 (d)
Section 6.5: Discrete-Circuit Amplifiers 6.107 Calculate overall voltage gain G, of a 3 mA/V, ro= = 10 MS2. The amplifier is the common-source amplifier for which g 100 k2, RD 10 k2, and RG fed from a signal source with a Thevenin resistance of l M2, and the amplifier output is coupled of 20 k2 to a load resistance SIM 6.108 The NMOS transistor in the CS amplifier shown in Fig. P6.108 has V, = 0.7 V and...
9.53 Find the voltage gain and input resistance of the amplifier in Fig. P9.53 assuming that β-100. +5 V 25 kΩ U: O 500 Ω Rin 0.1 mA 0.1 mA Figure P9.53
Rsig/2 Figure P8.45 8.46 Find the voltage gain and the input resi amplifier shown in Fig. P8.46 assuming β = 100. resistance of the +5 V 25 x1 0 02 250 Ω 250 Ω Rin 0.2 mA Figure P8.46
Rsig/2 Figure P8.45 8.46 Find the voltage gain and the input resi amplifier shown in Fig. P8.46 assuming β = 100. resistance of the +5 V 25 x1 0 02 250 Ω 250 Ω Rin 0.2 mA Figure P8.46
For Exercise, V_A=5V
Example 5.21 The circuit of Fig. 5.29 is biased with a collector current of 1 mA and Rc = 1 kQ. If B 100 and VA 10 V, determine the small-signal voltage gain and the I/O impedances. Solution We have (5.135) VT = (26 Ω)-1 (5.136) and (5.137) Ic = 10 kΩ (5.138) Thus, (5.139) (5.140) A,--g,n(Rellro) 35 (As a comparison, if Vl 00, then Au #38.) For the 1/0 impedances, we write (5.141) (5.142) (5.143) gm...
Find the following Re Rb Rin (small signal input R) Av (small signal Voltage Gain) 20V- Beta = 100 Vbe 0.75 lc10mA ??? 10V C2 Vin AC Short 10.004 9.905m A Rb Q1 20V Re
Design the CS amplifier in Fig. L7.17(a) to achieve a small-signal gain of at least 4,--5 V/V. Use supplies of V+--K = 15 V, Rsig-50 Ω, RL-10 kQ, and R1R2 = 10 kQ, and design the circuit to have ID-1 mA and a DC voltage at the gate Vo = 0 V. Use Cc,-CC2-CS-47 μF. What is the expected DC voltage at the source of the NMOS? C1 sig V. Rs sig
Design the CS amplifier in Fig. L7.17(a) to...
Q6. An amplifier circuit using an n-MOSFET is shown in Fig. Q6. The n-MOSFET has the following parameters: K'-1 mA/V2 and λ-0.02 w. v°' is a small signal AC voltage ource 8V 8V Vout Ra 2.56 mA Fig. Q6 (a) Calculate the DC gate voltage, Va. (b) Assuming that the n-MOSFET is operating in the saturation region and neglecting channel length modulation, calculate the threshold voltage, VrHN, given that the voltage drop across the de current sorce, Inas, has been...