Answered: For the Astable Multivibrator shown in…

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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I want to confirm if my work is correct. The problem is:

For the Astable Multivibrator shown in the figure, take RA=1k, RB=0.5k and
C=1microF and calculate the duty cycle and the frequency of the pulse that is
generated. Note that you can calculate the frequency from 1/T.

I've attached the figure and my work below. The formulas I used is the ones that were provided.

The Duty Cycle:
Duty Cycle = (1k +.5k)/(1k + 2(. 5k)) × 100 → Duty Cycle = 1.5k/2k * 100
Duty Cycle 75%
4 ELEN 3322
RA = 1k0, R₂ = 0.5k and C= = 1μF
The frequency:
T = 0.693 (R₁ + 2RB)C → T = 0.693(1k + 2(.5k))(1µ) → T = 1.386ms
Frequency = 721.5Hz

output
3
555
Timer
8
5
7
2
6
0.1pF
Vcc=5V
RA
RB
C

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