3.(15pts) Draw ac equivalent hybrid-pi circuit (assume ro=00) and derive equation for Rout- +3V 3.3 ko...
gm = 1.6 mS, r(pi)= 62.5 kOhm, ro= 1.875 MOhm, Rin= 39.2 kOhm, Rout= 37.6 kOhm, Av = -59, Av with RE added = -14.6, RiB with RE added = 264.5 kOhm The ac equivalent circuit for an amplifier is shown in Fig. P13.59. Assume the capacitors have infinite value, R = 750 12, RB = 100 k12, Rc = 62 k22, and R3 = 100 k12. Calculate the voltage gain and input resistance for the amplifier if the BJT...
QUESTION 7 Following circuit is the small-signal equivalent circuit of a common-emitter amplifier. Assume Ri 10 kn, RB - 93 KO, RL - 8.5 kn. Small signal parameters are gm = 100 m, 5k and ro - 10 kn. Calculate the voltage gain Avvo/ Re & m} ube gmbe 3 ro " vo
P.3: (4 marks) The AC circuit for the amplifier is given below 1- Draw the AC equivalent circuit of the amplifier using the high frequency hyo model - Tt model with C, Ceo and ro taken into consideration and Cah neglected. Use the open circuit time constants method to derive an expression for G. (3 marks) ma 2- 0 Ry,
5. (20 points) For the amplifier in the following figure: +Vcc Rout Rc C3 R2 Rin Ri 1 k R3 Vo Vi R1 RE -VEE a) Draw the de equivalent circuit and find the Q-point. Assume B -75 b) Draw the equivalent circuit used for ac analysis. Find the values in Thevenin equivalent representation for the amplifiers between C, and C as shown below. What is the maximum value of v, that satisfies the small- signal assumption? Rout Ri vi...
Voc Ri Rc C2 + RS G Q2N3904 RL Vout 2 R2 RE CE Rin Rout Cu B 1x B C o + V be : Cr 8m'be E VCC R R2 Rc RE RS RL С. Cz CE 12 V 8.2 kg 3.9 ko 6.3 k2 3.3 kΩ 3 ko 3.9 ko 10 uF 1uF 100 u Assume the 2N3904 has a 8 =100, Veron} = 0.7V, VA= 100V, C=100, C=13.9pF and Ce=8pF. Use the emission coefficient as n...
+VOD PMOSI Vout NMOS 3 NMOS 2 - Draw the small signal equivalent circuit. label each component and device. Use conductances for the channel length modulation terms assume lamba not equal to zero and not the same for pmos and nmos - What is the equation for small signal gm in terms of de bias for PMOSI? - Do nodal analysis at the drain node of NMOS2 and PMOS1 Solve for an equation for Av=vout/vin. - Solve for the output...
F LOpoint For the circuit shown in Figure 3 3. 1. Draw the DC equivalent circuit by opening caps and shorting inductors 2. Analyze the DC equivalent circuit as we have in previous labs (assume a region, analyze and check assumptions). Check your DC operating point using LT Spice. 3. Calculate the small signal parameters (transconductance, output resistance, input resistance) 4. Draw the AC equivalent circuit by shorting de voltage sources, opening dc current sources, shorting caps and opening inductors....
A common source amplifier circuit based on a single n-channel MOSFET is shown in Figure 4b. Assume that the transconductance gm-60 mS (equivalent to mA/ V) and drain source resistance, os, is so large it may be neglected. 0) Calculate the open circuit voltage gain Av Yout/ Vis. i) The amplifier has a load of 10 k2. Determine the current gain Va. = 12 V 150k 4k3 Vout Vin 200k GND = 0 V Figure 4b a) State the name...