Derive expressions for the fall time and high-to-low propagation delay for an RC network

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter5: Transmission Lines: Steady-state Operation
Section: Chapter Questions
Problem 5.7MCQ
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Derive expressions for the fall time and high-to-low propagation delay for an RC network

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Step 1

The fall time for RC circuit is the time taken to change the output voltage (VO) from 90% of input voltage (VI) to 10% of input voltage (VI). The output voltage of RC circuit is:

   Electrical Engineering homework question answer, step 1, image 1

The time taken to change the output voltage to 90% of input voltage and 10% of input voltage are respectively:

Electrical Engineering homework question answer, step 1, image 2

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