Fig-3 shows a common emitter stage driving a darlington pair connected as an emitter follower. Current...
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Fig-3 shows a common emitter stage driving a darlington pair connected as an emitter follower. Current gain of the transistor TR1, TR2, and TR3 are 200, 100,100 respectively. a) Calculate the internal emitter resistance- of the two transistors. Hence calculate the input impedance of the two transistors. b) Find the overall voltage gain of the circuit given in Fig-3. Hence calculate the voltage gain. c) Explain the effect of the overall gain of Fig-3, if the Darlington pair is removed and 102 load is capacitor coupled to the collector of TRI. + Vcc 15V RI R3 3.3KN S 47K2 Vo TR2 TR3 CI C2 Ro 1uF TRI Rs R: 5KO R5 10K2 IKO R. 102 R4 C3 Vs O IKO Fio -3 Fig-3 shows a common emitter stage driving a darlington pair connected as an emitter follower. Current gain of the transistor TR1, TR2, and TR3 are 200, 100,100 respectively. a) Calculate the internal emitter resistance- of the two transistors. Hence calculate the input impedance of the two transistors. b) Find the overall voltage gain of the circuit given in Fig-3. Hence calculate the voltage gain. c) Explain the effect of the overall gain of Fig-3, if the Darlington pair is removed and 102 load is capacitor coupled to the collector of TRI. + Vcc 15V RI R3 3.3KN S 47K2 Vo TR2 TR3 CI C2 Ro 1uF TRI Rs R: 5KO R5 10K2 IKO R. 102 R4 C3 Vs O IKO Fio -3
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Related Book For
Probability & Statistics for Engineers & Scientists
ISBN: 978-0130415295
7th Edition
Authors: Ronald E. Walpole, Raymond H. Myers, Sharon L. Myers, Keying
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