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= noise power in Watts and dBm.

= noise power in Watts and dBm.

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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Question
Q25.) Johnson noise was first measured by John B. Johnson at Bell Labs in 1982. He has proven that generated noise power is proportional to temperature and bandwidth Pn = KTB Watt. One measured operational amplifier with a frequency range from 50okHz to 7.5MHZ has an input resistance of 750, and the amplifier is operating at a temperature of 17°C. (i) Calculate the noise power in Watts and dBm. (ii) The noise power can be modelled using Thevenin Equivalent Circuit. Using this circuit show how the noise power can be related with the noise voltage. Calculate the noise voltage of the amplifier. (iii)
Transcribed Image Text:Q25.) Johnson noise was first measured by John B. Johnson at Bell Labs in 1982. He has proven that generated noise power is proportional to temperature and bandwidth Pn = KTB Watt. One measured operational amplifier with a frequency range from 50okHz to 7.5MHZ has an input resistance of 750, and the amplifier is operating at a temperature of 17°C. (i) Calculate the noise power in Watts and dBm. (ii) The noise power can be modelled using Thevenin Equivalent Circuit. Using this circuit show how the noise power can be related with the noise voltage. Calculate the noise voltage of the amplifier. (iii)
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