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Q3) The figure below shows the small single equivalent circuit of a single stage transistor amplifier. The transistor has the following small signal parameters: hie 3 ko, hfe = 90 = 22 ΚΩ 8 ΚΩ hie hfeib 4.7 ΚΩ Vo Vi e The input signal to the amplifier, vi, is a sinewave of 20 mV amplitude at a frequency of 1 kHz. Assuming that the reactance of C is small at 1 kHz, calculate i) the amplitude of the base current signal ib, ii) the amplitude of the collector current signal, iii) the amplitude of the output signal vo, iv) the input impedance of the amplifier. The amplifier is to amplify signals down to a frequency of 40 Hz. Determine an appropriate value for C.

Q3) The figure below shows the small single equivalent circuit of a single stage transistor amplifier. The transistor has the following small signal parameters: hie 3 ko, hfe = 90 = 22 ΚΩ 8 ΚΩ hie hfeib 4.7 ΚΩ Vo Vi e The input signal to the amplifier, vi, is a sinewave of 20 mV amplitude at a frequency of 1 kHz. Assuming that the reactance of C is small at 1 kHz, calculate i) the amplitude of the base current signal ib, ii) the amplitude of the collector current signal, iii) the amplitude of the output signal vo, iv) the input impedance of the amplifier. The amplifier is to amplify signals down to a frequency of 40 Hz. Determine an appropriate value for C.

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
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Q3) The figure below shows the small single equivalent circuit of a single stage transistor amplifier. The transistor has the following small signal parameters: hie 3 ko, hfe = 90 = 22 ΚΩ 8 ΚΩ hie hfeib 4.7 ΚΩ Vo Vi e The input signal to the amplifier, vi, is a sinewave of 20 mV amplitude at a frequency of 1 kHz. Assuming that the reactance of C is small at 1 kHz, calculate i) the amplitude of the base current signal ib, ii) the amplitude of the collector current signal, iii) the amplitude of the output signal vo, iv) the input impedance of the amplifier. The amplifier is to amplify signals down to a frequency of 40 Hz. Determine an appropriate value for C.
Transcribed Image Text:Q3) The figure below shows the small single equivalent circuit of a single stage transistor amplifier. The transistor has the following small signal parameters: hie 3 ko, hfe = 90 = 22 ΚΩ 8 ΚΩ hie hfeib 4.7 ΚΩ Vo Vi e The input signal to the amplifier, vi, is a sinewave of 20 mV amplitude at a frequency of 1 kHz. Assuming that the reactance of C is small at 1 kHz, calculate i) the amplitude of the base current signal ib, ii) the amplitude of the collector current signal, iii) the amplitude of the output signal vo, iv) the input impedance of the amplifier. The amplifier is to amplify signals down to a frequency of 40 Hz. Determine an appropriate value for C.
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