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2. Refer again to the network of fig.P1. Using the small-signal-equivalent circuit developed in problem 1...
Q. 4. (a) Draw a small signal equivalent circuit by replacing the BJT with its hybrid-mt model for the circuit shown below. Also derive an expression for Zin when la is neglected. (10) + Vx (b) Compute the voltage gain, input and output impedance for the following circuit if ß = 150 and VBEQ = 0.7 V, V1 = 26 mV. (15) A+ 10 V 40 ΚΩ R1 4 ΚΩ Сі CO Vs R2 vo 60 ΚΩ 5 ΚΩ RE...
QUESTION5 The small-signal ac equivalent cireuit of a transistor amplifier with collector feedback is shown in the figure below. Assume the following circuit values: B- 200, re" i i o. RF-180 kn. Rc" 2.7 ?, RO-3.3 ?, ??-?2 = 10 ?? If the input voltage Vi-5 co (90 t) mv. determine the magnitude of the steady-state ac output voltage Vo (in mV), across the output load resistor Ro. Hint: Use node analysis to find the output node voltage, and note...
The circuit 3-The circuit of problem # 2 is subjected to a small ac input by the signal generator. By neglecting the voltage drop across the coupling and bypass capacitors, determine the small signal voltage gain Vo/ Vì = Avi , input resistance Ri-vi / ii and the output resistance Ro external to R Avi= Ri= , Ro The accompanying circuit shows a 4-resistor biased JFET transistor Determine the values of Rp and Rs so that the Q-point is equal...
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...
Refer to the circuit diagram depicted in Figure 1 below 10245V 20 20V (3-4021 10 22 3.1 Figure 1 Determine the Thevenin equivalent impedance of the network provided in figure 1 (Show all steps) 3.2 Calculate the open circuit voltage VAD 3.3 Draw the Thevenin equivalent circuit of the network and determine the current through a load Z=332 + 14 41 connected across AB terminals (5) [12]
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
The circuit below is a common collector (CC) circuit. Assuming VBEON VA, and ß - 100, , VCE.SAT 0.2V, VA 00 Calculate the transistor operating point. a. 1 b. Find the small signal voltage gain, 。 Find the driving point input resistance. c. d. If the input is a sinewave, find the maximum output voltage amplitude before clıpping sets in. B1 CO Q1 RE v,RB2 Assuming VBEON VA, and ß - 100, , VCE.SAT 0.2V, VA 00 Calculate the transistor...
In the circuit of given below, Vsig is a small sine wave signal with zero average. The transistor B is 100. a) Find the value of RE to establish a dc emitter current of about 0.5 mA. b) Find Rc to establish a dc collector voltage of about +5 V c) For RL10 kS2 and the transistor ro 200 k2, draw the small-signal equivalent circuit 5. of the amplifier and determine its overall voltage gain +15 V Re O Vo...
NAME u (33 PTS.) A FET two-stage amplifier is shown below. (a) Draw the small-signal equivalent circuit oe entire amplifier. (b) Find the voltage gain A,-./. (c) Find the input resistanc resistance Ro. Assume that Id = 1mA. e R, and the output Kn 31.6mAN2 V-1.73 Lambda0 R5 R4 C2 M2 C3 Ro R2 C1 00uF RL 50k Ri C4 R3 R10 1.8K
Laboratory 2: Transistor circuit characteristics A. Objectives: 1. To study the basic characteristics of a transistor circuit. 2. To study the bias circuit of a transistor circuit. B. Apparatus: 1. DC Power supply 2. Experimental boards and corresponding components 3. Electronic calculator (prepared by students) 4. Digital camera (prepared by students for photo taking of the experimental results) 5. Laptop computer with the software PicoScope 6 and Microsoft Word installed. 6. PicoScope PC Oscilloscope and its accessories. 7. Digital multi-meter....