a. What are DC Choppers? Explain what TRC (Time Ratio Control) isb. A Buck Converter is used with a 2mH inductor and a supply voltage of 15V. The load resistance ismaintained at 1 Q. The switching frequency is 100 kHz.i. Determine the duty cycle needed for an output voltage of 5V.ii. Calculate the output supply voltage ripple.iii. What are the consequences of decreasing the load resistance by 50% (to 0.5 ohms)?c. Identify the class of converter in the figure anddescribe the principle of operation of such aconverter.d. State a possible application of such a converter.e. Draw the output waveforms of the current andvoltage and the gate pulses of the choppers.Indicate on the current waveform the region ofoperation of the choppers and diodes.CH₁CH₂AD₂ChopperwwwrooE+←Vo

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Engineering

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a. What are DC Choppers? Explain what TRC (Time Ratio Control) is

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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Question

a. What are DC Choppers? Explain what TRC (Time Ratio Control) is
b. A Buck Converter is used with a 2mH inductor and a supply voltage of 15V. The load resistance is
maintained at 1 Q. The switching frequency is 100 kHz.
i. Determine the duty cycle needed for an output voltage of 5V.
ii. Calculate the output supply voltage ripple.
iii. What are the consequences of decreasing the load resistance by 50% (to 0.5 ohms)?
c. Identify the class of converter in the figure and
describe the principle of operation of such a
converter.
d. State a possible application of such a converter.
e. Draw the output waveforms of the current and
voltage and the gate pulses of the choppers.
Indicate on the current waveform the region of
operation of the choppers and diodes.
CH₁
CH₂
AD₂
Chopper
wwwroo
E
+←
Vo

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