
Rsig/2 Figure P8.45 8.46 Find the voltage gain and the input resi amplifier shown in Fig. P8.46 a...
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
In the CS amplifier shown in the figure above, Rsig =
20 kΩ amplifier input resistance Rin = 80 kΩ,
Cgs=2pF, Cgd= 0.5pF, gm=2mA/V,
ro= 80 kΩ , RD = 5 kΩ, and RL = 10
kΩ. (π = 3.14)
a) Determine high frequency cut-off fH.
(Use Miller Approximation. Use . as the
decimal point. Answer in MHz; for 7.89MHz write 7.89
only.)
VOD RD V RIS R CS V Ro In the CS amplifier shown in the figure above....
The amplifier shown in Figure below has Rsig = R1 =1 k12, Rc= 1 k-2, RB = 47 k22, B = 100, 1=0.54 mA, Cu = 0.8 pF, and f1 =600 MHz (a) Find gm and r7. (b) Neglecting ro, find the midband voltage gain from base to collector (neglect the effect of RB). (c) Use the gain obtained in (c) to find the component of Rin that arises as a result of RB. Hence find Rin (d) What is...
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...
The ac equivalent circuit for an amplifier is shown in Fig. P13.59. Assume the capacitors have infinite value, R1 = 750 Ω, RB = 100 kQ, Rc = 62 kQ, and R3 100 kS2. Calculate the voltage gain and input resistance for the amplifier if the BJT Q-point is (40 μΑ, 10 V). Assume β,-100 and V,-75 V. 13.59 / 1 C. I Thévenin equivalent
Please show a detail explanation on the solution. Thanks in
advance
4.117 The amplifier of Fig. P4.117 consists of two identical common-e that the input resistance of the second stage, R2, constitutes the load resistance of the first stage mitter amplifiers connected in cascade. Observe = 6.8 kΩ and β= 100, determine the dc collector current and de collector voltage of each transistor (b) Draw the small-signal equivalent circuit of the entire amplifier and give the values of al its...
Q1. For the cascade amplifier circuit shown in Fig (1): a) What are the functions of the capacitors C, C2 and C3? And what are the functions of the capacitors Cs and CE? b) What are the functions of the resistors RD and Rc? c) Draw the DC biasing circuits for each stage. d) Find loa, VGsa, VDs and gm for the JFET stage (you may use either mathematical or graphical methods) e) Calculate l, Ic, le and Ve for...
1. An amplifier has a voltage gain Av equal to 20. An input voltage v of 150 mVs applied to the input of the amplifier. What is the output voltage vo? Rs 2. For the amplifier in Problem 3, assume the input current i is 2 mA, and the output current io is 10 mA. What is the current gain A, ? Assuming the amplifier as described above has an output resistance is 0 ohms, what is the load resistance...
Problem 2 Consider the feedback amplifier circuit on Figure P2. The DC current gain of transistor Q3 is -100 1. What type of feedback (or what feedback topology) do we have on the circuit in Figure P2? 2. Draw the A-circuit. Express and compute the open-loop voltage gain A at mid-band frequency 3, Draw the γ-circuit. Express and compute the feedback factor γ 4. Express and compute the overall gain of the feedback amplifier Ap Express and compute the input...
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...