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7.50 Figure P7.50 shows the circuit of an amplifier fed with a signal source v with a source resistance R: The bias circuitry is not shown. Replace the BJT with its hybrid- equivalent circuit of Fig. 7.24(a). Find the input resistance R„ = v,li, the voltage transmission from source to amplifier input, v,lvg, and the voltage gain from base to collector, v,Ju.. Use these to show that the overall voltage gain v,Jv is given by BR. r,+Rg

7.50 Figure P7.50 shows the circuit of an amplifier fed with a signal source v with a source resistance R: The bias circuitry is not shown. Replace the BJT with its hybrid- equivalent circuit of Fig. 7.24(a). Find the input resistance R„ = v,li, the voltage transmission from source to amplifier input, v,lvg, and the voltage gain from base to collector, v,Ju.. Use these to show that the overall voltage gain v,Jv is given by BR. r,+Rg

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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Hi, I need the answer for question 7.50. It would help me very much

7.50 Figure P7.50 shows the circuit of an amplifier fed with a signal source v, with a source resistance R. The bias circuitry is not shown. Replace the BJT with its hybrid-7 BO BO equivalent circuit of Fig. 7.24(a). Find the input resistance R = v,li,, the voltage transmission from source to amplifier Bip input, v,lvi, and the voltage gain from base to collector, vlv,. Use these to show that the overall voltage gain v Jv gm = I/Vr r,=V7/lg = B/gm is given by E E BR r,+R (a) (b) = - Figure 7.24 Two slightly different versions of the hybrid-n model for the small-signal operation of the BJT. The equivalent circuit in (a) represents the BJT as a voltage-controlled current source (a transconductance amplifier), and that in (b) represents the BJT as a current-controlled current source current amplifier). Rsig Re Rin Figure P7.50
Transcribed Image Text:7.50 Figure P7.50 shows the circuit of an amplifier fed with a signal source v, with a source resistance R. The bias circuitry is not shown. Replace the BJT with its hybrid-7 BO BO equivalent circuit of Fig. 7.24(a). Find the input resistance R = v,li,, the voltage transmission from source to amplifier Bip input, v,lvi, and the voltage gain from base to collector, vlv,. Use these to show that the overall voltage gain v Jv gm = I/Vr r,=V7/lg = B/gm is given by E E BR r,+R (a) (b) = - Figure 7.24 Two slightly different versions of the hybrid-n model for the small-signal operation of the BJT. The equivalent circuit in (a) represents the BJT as a voltage-controlled current source (a transconductance amplifier), and that in (b) represents the BJT as a current-controlled current source current amplifier). Rsig Re Rin Figure P7.50
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