1. What is the advantage of a Darlington pair compared to a CC
amplifier?
a) Less input impedance
b) Twice the voltage gain
c) Twice the current gain
d) Smaller combined Beta
2.What type of coupling is a connection between the output of one stage to the input of another stage?
a)Direct coupling
b)Inductive coupling
c) Capacitive coupling
d) Resistive coupling
1. What is the advantage of a Darlington pair compared to a CC amplifier? a) Less...
Given the multistage amplifier below, select all correct statements Multistage-Amp Group of answer choices The collector current in Q2 is approximately 16mA The input impedance of the amplifier is approximately 2.5Megohms The output impedance of the amplifier (assuming Q2) has a Beta=100 is close to 500Kohms The overall gain for the circuit (including loading effects) is approximately 13 If an overall gain for the multistage amplifier of 20 is desired, RG can be selected around 450 to account for any...
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...
please make sure you are correct
1. Select configuration for a single-transistor amplifier with a gain of 30 dB and input resistance of 5 Mohm. A) common-emitter; b) common-gate; c) common-source; d)common-collector; e) cannot be implemented by single stage amplifier. 2. Select configuration for a single-transistor amplifier with a gain close to 0 dB and input resistance of 5 Mohm and load resistor of 50 ohm. a) common-emitter; b) common-gate; c) common-source; d)common-collector; e) cannot be implemented by single stage...
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...
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...
Problem 2 (10 points) In the amplifier shown in Fig. 2(a), assume Fig. 2(b) that I4 is ideal. Do not ignore the ro of the transistors for this problem, but you can assume that Ri is much smaller than any transistor o I1 and I2 ideal current sources. Also, assume in are (a) Find the small signal differential gain out/vdm of the Fig. 2(a) amplifier in terms of the appropriate small-signal parameters. Then express your answer in terms of appropriate...
1.0 kn. RE-390 Ω, r-15 Ω. and ßac-75. 5. For a common-emitter amplifier, Rc Assuming that Rg is completely bypassed at the operating frequency, the voltage gain is (a) 66.7 (d) 75 (b) 2.56 (c) 2.47 6. In the circuit of Question 5, if the frequency is reduced to the point where Xctbypass) RE, the voltage gain (a) remains the same (b) is less (c) is greater 7. In a common-emitter amplifier with voltage-divider bias, Rimlbase) 68 k2, Ri 33...
pls
answer all and asap.tqvm.
(a) () What is the significant used of multistage amplifier compared to single stage amplifier? (2 marks) (ii) In terms of circuit connection, how to differentiate between direct and capacitively coupled amplifier circuit? (1 mark) (ii) Give a reason why the capacitively coupled amplifier circuit is not suitable for amplifying DC voltage? (2 marks) (b) The multistage amplifier circuit of Figure Q.3 have the following parameters: Q1, Q2: B = 200, VBE = 0.7 V,....
1. Figure 1 shows a CE power amplifier in which the collector resistor serves also as the load resistor. Assume Bpc Bac 100 a. Determine the dc Q-point (lco and VCEQ). b. Determine the voltage gain and the power gain c. The power dissipated in the transistor with no load. d. The total power from the power supply with no load e. The signal power in the load with a 500 mV input. f. What changes would be necessary to...
1. The feedback is negative. True or
False?
2. Find the value of the forward amplifier gain
3. If R1=10kΩ, what value should R2 have to have a feedback
factor of 1/2?
4. The closed-loop gain is about …
(Hint: The closed-loop gain is positive)
A) 1.5
B) 2.8
C) 1.9
D) 3.7
5) If the overall forward amplifier has a 150 Hz bandwidth (due
to a single dominant pole), the bandwidth of the closed-loop
circuit would be around …...