2. The circuit below is an emitter follower (the output is taken from the emitter and...
Avec Úvo SRE L V II. (5pt) Consider the above-right common-collector or emitter-follower BJT amplifier circuit. Given: ß= 100, RE = 10 k1, Vcc = 20 V, RB = 5 k1, R1 = 10 kl, and Ry = 2 k1. (a) (1pt) Find the Q-point, i.e. Ibo, Ico, and VCEO; (b) (1pt) draw the small-signal equivalent circuit assuming that the capacitors (C, and Cy) are short circuits for the small signal; (c) (1pt) solve for the voltage gain, Av; (d)...
2. For the follower circuit below, KNOWN AS A Darlington pair, let Vcc 9V VBEON0.6V, and B100, VA for both transistors. a. Find each transistor operating point. b. If a load resistor of R 1ks2 is connected to the output terminal (RL not shown in the figure), find the voltage gain from the base of Q2 to the output, and the input resistance looking into the base of Q2 (R2). Hint: Consider Q2 as an emitter follower fed by a...
42% . 9:69 PM Wed Apr 17 3)For the figure below assume the following specifications: VT-0.025 volts lco=1 mA GAIN 20 Vcxo 8 volts (VcEo does not equal Vco) Zin 10k VBE 0.7 volts Find the value of the resistors. (Hint: Using the specifications in the order given above you can find the resistors in the order Re, Re, Re, R and R) 4 For the amplifier shown below find Zin, Zout, and the GAIN-voin. Your answer will be in...
9. A circuit that combines a zener regulator and an emitter follower is referred to as A. An emitter regulator B. A follower regulator C. A zener follower D. A zener diode 10. Small load resistances that would overload a CE amplifier can be used with an emitter follower because an emitter follower A. steps up impedance B. amplifies high frequencies better C. has a higher voltage gain D. cannot amplify current 11. The emitter-follower amplifier has a A. low...
4. Consider the common-emitter amplifier of Figure 5. Draw the dc circuit and find ICQ. Draw the dc circuit and find ICQ. Find the value of Then, calculate values for Voltage gain Av, Open circuit voltage gain Avoc, input impedance Zin, current gain Ai, power gain G, and out- put impedance Zo. Assume operation in the frequency range for which influence of coupling and bypass capacitors can be ignored +15 V +15 V B 100 100 Ω 47ka Figure 5...
2. For the following circuit: emitter follower onguration i.e. CE, or CC, or CB, or CS or, or CG, or CD, or b. Calculate ly, Lc. IB, VEs and VI. c. Based or none of the above, and the correct answer is on calculations in part (b). the transistor is in active or saturation of or triode region, explain supporting with above ca Calculate the input resistance Rin looking into base, and output resistance n looking into emitter e. Calculate...
2. For the common-emitter amplifier. B= 50. Vcc=12 a) Draw small signal circuit b) Find vout/vin Find Zin and Zou Vcc R1 27k R2 2.2k Zout Zin Vo 4 C1 16 BIG Q1 NPN V1 C2 V R3 15k RE 1.2k BIG
4. Consider the common-emitter amplifier of Figure 5. Draw the dc circuit and find「CQ. Draw the dc circuit and find ICQ. Find the value of r. Then, calculate values for Voltage gain Av, Open circuit voltage gain Avoc, input impedance Zin, current gain Ai, power gain G, and out- put impedance Zo. Assume operation in the frequency range for which influence of coupling and bypass capacitors can be ignored. +15 V +15 V s in 100Ω CE Figure 5
This direct coupled emitter follower amplifier using a reference current mirror to produce a blasttent for the di transistor The parameters for the circuit are as follows: . Vcc = -Ves = 5V • All transistors. Qı, Q2, Qs, are matched with the following parameters + 8 = 100 , Is = 10- A (Hints: You must solve for for all transistors. You may need to lerate once or twice to solve the recent with the foresistor in the Qiraulties...
2.A common-emitter circuit with an emitter bypass capacitor is shown in Figure 2(a) and its small-signal equivalent is as in Figure 2(b). Let V' = 10 V, V-=-10 V, RE-4 kQ. Re 2 kQ, CE 50 μF, VED(0) 0.7 V, β 100, VT 0.026 V and VA- Prove that the voltage gain transfer function of the circuit is given by: a) b) Find the values of the time constants τΑ and t, and the corresponding corner frequencies fa and fa....