A 555 timer configured to run as an astable mode oscillator is shown in Figure 1. If the output is needed to have 30% duty cycle, i) Determine the required value of Rị if R2 = 7kN. ii) Determine the frequency of the output. iii) Draw the charging and discharging phase of capacitor Cext and its relation with the output waveform. ASsume Vcc = 12 V.

A 555 timer configured to run as an astable mode oscillator is shown in Figure 1. If the output is needed to have 30% duty cycle, i) Determine the required value of Rị if R2 = 7kN. ii) Determine the frequency of the output. iii) Draw the charging and discharging phase of capacitor Cext and its relation with the output waveform. ASsume Vcc = 12 V.

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter32: Standby Power Systems

Section: Chapter Questions

Problem 7R: Briefly explain the function of a transfer switch. _____

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