(1) R₂ C₁ DIS TRI THR VCC C₂ 100 nF 555 Timer CV RST Figure 4(b) OUT GND I V cc V out 12 V The desired oscillation frequency and duty cycle of the output signal Vout is 1200Hz and 88%, respectively, determine the design values of R₁ and C₁. State an assumption for resistor, R2.

(1) R₂ C₁ DIS TRI THR VCC C₂ 100 nF 555 Timer CV RST Figure 4(b) OUT GND I V cc V out 12 V The desired oscillation frequency and duty cycle of the output signal Vout is 1200Hz and 88%, respectively, determine the design values of R₁ and C₁. State an assumption for resistor, R2.

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

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.3P

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Question

H7.

(1)
€
R₂
C₁
DIS
TRI
THR
VCC
C₂
100 nF
RST
555
Timer
Figure 4(b)
OUT
CV GND
V cc
V out
12 V
The desired oscillation frequency and duty cycle of the output signal Vout is 1200Hz
and 88%, respectively, determine the design values of R₁ and C₁. State an assumption
for resistor, R₂.
Based on quantitative illustration, explain how to reduce the oscillation frequency
by half and reduce the duty cycle by a factor of 1.5. State an assumption made for
R₂. Show all the working steps.

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