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7.48 The transistor amplifier in Fig. P7.48 is biased with a current source I and has a very high B. Find the de voltage at the collector, Ve. Also, find the value of r̟. Replace the transistor with the T model of Fig. 7.26(b) (note that the de current source I should be replaced with an open circuit). Hence find the voltage gain v,/v,. +3 V F 7. 10 ΚΩ o Vc + Uc Si ca ar re tr. DI = 0.2 mA Figure P7.48

7.48 The transistor amplifier in Fig. P7.48 is biased with a current source I and has a very high B. Find the de voltage at the collector, Ve. Also, find the value of r̟. Replace the transistor with the T model of Fig. 7.26(b) (note that the de current source I should be replaced with an open circuit). Hence find the voltage gain v,/v,. +3 V F 7. 10 ΚΩ o Vc + Uc Si ca ar re tr. DI = 0.2 mA Figure P7.48

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Microelectronic_Circuits_by_Sedra_Smith.pdf - Foxit Reader O File Home Comment Fill & Sign View Form Protect Share Connect Help O Tell me what you want to do... 7.15 O SnapShot 6 Clipboard - O 150% O Fit Page T D Fit Width A Link A Bookmark U File Attachment TI Rotate Left Image Annotation Hand Select Actual Reflow Typewriter Highlight D Fit Visible Rotate Right O Audio & Video Size Tools View Comment Links Insert 福听PDF转Word Start Microelectronic_Circuits_... 7.47 Show that the T model of Fig. 7.26(b) is the incremental T'sig version of the large-signal model of Fig. 6.5(b). 7.48 The transistor amplifier in Fig. P7.48 is biased with a + Rc current source I and has a very high B. Find the de voltage Vsig at the collector, Vc. Also, find the value of r.. Replace the transistor with the T model of Fig. 7.26(b) (note that the de current source I should be replaced with an open circuit). Hence find the voltage gain v/v;. Rin +3 V Figure P7.50 7.51 Figure P7.51 shows a transistor with the collector 10 kM connected to the base. The bias arrangement is not shown. Since a zero vBC implies operation in the active mode, the BJT can be replaced by one of the small-signal models of Figs. 7.24 and 7.26. Use the model of Fig. 7.26(b) and show that the o Vc + vc resulting two-terminal device, known as a diode-connected transistor, has a small-signal resistance r equal to r,. Vj V)I = 0.2 mA Figure P7.48 11 487 (516 / 1489) 150% 11:29 AM O Type here to search 日 96% 1 4») G ENG 11/4/2021 LEMS
Transcribed Image Text:Microelectronic_Circuits_by_Sedra_Smith.pdf - Foxit Reader O File Home Comment Fill & Sign View Form Protect Share Connect Help O Tell me what you want to do... 7.15 O SnapShot 6 Clipboard - O 150% O Fit Page T D Fit Width A Link A Bookmark U File Attachment TI Rotate Left Image Annotation Hand Select Actual Reflow Typewriter Highlight D Fit Visible Rotate Right O Audio & Video Size Tools View Comment Links Insert 福听PDF转Word Start Microelectronic_Circuits_... 7.47 Show that the T model of Fig. 7.26(b) is the incremental T'sig version of the large-signal model of Fig. 6.5(b). 7.48 The transistor amplifier in Fig. P7.48 is biased with a + Rc current source I and has a very high B. Find the de voltage Vsig at the collector, Vc. Also, find the value of r.. Replace the transistor with the T model of Fig. 7.26(b) (note that the de current source I should be replaced with an open circuit). Hence find the voltage gain v/v;. Rin +3 V Figure P7.50 7.51 Figure P7.51 shows a transistor with the collector 10 kM connected to the base. The bias arrangement is not shown. Since a zero vBC implies operation in the active mode, the BJT can be replaced by one of the small-signal models of Figs. 7.24 and 7.26. Use the model of Fig. 7.26(b) and show that the o Vc + vc resulting two-terminal device, known as a diode-connected transistor, has a small-signal resistance r equal to r,. Vj V)I = 0.2 mA Figure P7.48 11 487 (516 / 1489) 150% 11:29 AM O Type here to search 日 96% 1 4») G ENG 11/4/2021 LEMS
Microelectronic_Circuits_by_Sedra_Smith.pdf - Foxit Reader O File Home Comment Fill & Sign View Form Protect Share Connect Нер O Tell me what you want to do... 7.26(b) O SnapShot B Clipboard - A Link Ô Fit Page T D Fit Width e 150% O File Attachment TI Rotate Left A Bookmark e Image Annotation Hand Select Actual Reflow Typewriter Highlight D Fit Visible Rotate Right O Audio & Video Size Tools View Comment Links Insert 福听PDF转Word Start Microelectronic_Circuits_... 7.2 Small-Signal Operation and Models 409 C ic ai, 8m Vbe 8m = IÇNT VT re = IE Bo Во &m Vbe re he E E (а) (b) Figure 7.26 Two slightly different versions of what is known as the T model of the BJT. The circuit in (a) is a voltage-controlled current source representation and that in (b) is a current-controlled current source representation. These models explicitly show the emitter resistance r rather than the base resistance r_ featured in the hybrid-n model. 11 409 (438 / 1489) 目昌目非 150% 11:30 AM O Type here to search 日 96% 1 4) G ENG 11/4/2021
Transcribed Image Text:Microelectronic_Circuits_by_Sedra_Smith.pdf - Foxit Reader O File Home Comment Fill & Sign View Form Protect Share Connect Нер O Tell me what you want to do... 7.26(b) O SnapShot B Clipboard - A Link Ô Fit Page T D Fit Width e 150% O File Attachment TI Rotate Left A Bookmark e Image Annotation Hand Select Actual Reflow Typewriter Highlight D Fit Visible Rotate Right O Audio & Video Size Tools View Comment Links Insert 福听PDF转Word Start Microelectronic_Circuits_... 7.2 Small-Signal Operation and Models 409 C ic ai, 8m Vbe 8m = IÇNT VT re = IE Bo Во &m Vbe re he E E (а) (b) Figure 7.26 Two slightly different versions of what is known as the T model of the BJT. The circuit in (a) is a voltage-controlled current source representation and that in (b) is a current-controlled current source representation. These models explicitly show the emitter resistance r rather than the base resistance r_ featured in the hybrid-n model. 11 409 (438 / 1489) 目昌目非 150% 11:30 AM O Type here to search 日 96% 1 4) G ENG 11/4/2021
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