W2 -Lab 2 Class B -AB-OG

Which of the following is the basic feature of the emitter-connected amplifier circuit? I. It has voltage gain II. It has current gain III. There is a 180 degree phase difference between the input signal and the output signal

Questions: - 1. For the circuit of Figure (1), the voltage gain from base to collector approximately: is : (a)l (b)12 (c)112 (d)224 2. The output signal of the common-emitter amplifier is out-of-phase with the input by: (a)0° (b)45° (c)90° (d) 180°. 3. If the emitter bypass capacitor in Figure (1) is removed, the Amplifier voltage gain will: (a) Increase. (b) Decrease. (c) Remain essentially the same. 70 4. If the emitter bypasses capacitor in Figure (1) is shoricu, the voltage gain will increase. (a). The voltage gain will remain the same. (c) The transistor will saturate. (d) None of the above. 5. If the load resistor RL in the circuit of Figure (1) is made larger, the amplifier voltage gain will (a) Increase. (b) Decrease. (c) Remain essentially the same. main Đọc To 1.1.3 G 1=1 kHr R₁ 104 H.H C₁ 1 pF C₂ 0.22 F V₁ THE R2 U 100 ( U 30 mV R₂ 470 (1 B Rpart 1 1x0 V₁ bts Type 91182 Fig.1 R₁ 4.760: 10 to point D C Ucu Y₁ M

Among the three characteristics of a transistor amplifier, which region is normally employed for linear (undistorted) amplifiers? a. active region b. capital region c. saturation region d. cutoff region Choose correct answer

Activity 2: The amplifier circuit below has a single ac input and two ac outputs. Assuming transistor parameters of B= 130 and VBE=0.7 V: 15 V 15 V W 350 ΚΩ 300 ΚΩ H11 13 ΚΩ 10 ΚΩ

Please solve it.

I need to create a multistage amplifier. With the following specs.

please answer qiuckly

........ (Figure-1) R. RB= 380kN,Rc= 1kN B = 100, VBB = Vcc=12V RB ww Vec CC ......... I, V CE СЕ V ВЕ BB Q-1-b) Describe briefly the input / output characteristics and application of Common Emitter BJT Configuration

A field effect transistor (FET) A. Uses a forward bias p-n junction, B. Uses a high concentration emitter junction, C. Has a very high input resistance, D. Depends on flow of minority carrier. As compared to transistor amplifier JFET amplifier has A. Higher voltage gain, less input impedance, B. Less voltage gain, less input impedance, C. Less voltage gain, higher input impedance, D. Higher voltage gain, higher input impedance. The pinch off voltage is the voltage A. At which gate source junction breaks down, B. Which causes depletion regions to meet, C. The voltage applied between drain & source, D. Neither of these. O If properly biased JFET acts as A. Current controlled current source, B. Voltage controlled voltage source, C. Voltage controlled current source, D. Current controlled voltage source.

Provide the detailed explanation -

3. For the circuit in Figure 3, the transistor parameters are B = 120, VBE (on) = 0.7 V, and VA = 50 V. Let RTH = 0.1(1 + B)RE. (a) Design a bias-stable circuit such that Igo = 1.5 mA (b) Using the results of part (a), find the small-signal mid-band voltage gain (c) Determine the output resistance R. (d) What is the lower 3 dB corner frequency? Vcc = 12 V R1 CCI → 00 Cc2 = 2 µF RE = 4 k2 RL =D 4 k2 Figure 3 ww ww ww

(1) Describe in detail the relative advantages of Class A and Class B amplifiers. In what types of circuits would Class B be advantageous over Class A (1I) With the aid of signal diagrams, describe two forms of distortion you would expect to observe on an output signal of a Class B amplifier. (III) Describe in circuit terms the advantages of a Class AB amplifier.

Exercise 1:-

Explain these answers simply

Please explain the concept of amplifiers.

The DC Current Gain of a Transistor is Select one: a. Ratio of Collector Current to Base Current b. Ratio of Base Current to Collector Current c. Ratio of Emitter Current to Collector Current d. Ratio of Base Current to Emitter Current

Describe two different methods for determining the stability of an amplifier.

B/Considering the three types of Power Amplifier Circuits (Class A, Class B, and Class C): 1. Where is the Q point located (biasing quiescent point) in each type before applying an AC signal? 2. Among these three types, which one can provide linear amplification, and which one cannot? 3. Compare their efficiency.