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An op-amp comparator in a firing circuit can produce waveforms at the output of up to 24 V peak-to-peak without any distortion. An inverse cosine-based firing circuit with a voltage range from +12 to -12 (reference voltage) is used to produce a gating signal for the SCR at the desired delay angle. f the reference voltage is -6.0 volts, the delay angle (in degrees) would be:

An op-amp comparator in a firing circuit can produce waveforms at the output of up to 24 V peak-to-peak without any distortion. An inverse cosine-based firing circuit with a voltage range from +12 to -12 (reference voltage) is used to produce a gating signal for the SCR at the desired delay angle. f the reference voltage is -6.0 volts, the delay angle (in degrees) would be:

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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An op-amp comparator in a firing circuit can produce waveforms at the output of up to 24 V peak-to-peak without any distortion. An inverse cosine-based firing circuit with a voltage range from +12 to -12 (reference voltage) is used to produce a gating signal for the SCR at the desired delay angle. If the reference voltage is -6.0 volts, the delay angle (in degrees) would be: - A. None of the other choices are correct - B. 150 - C. -120 - D. 120 - E. 60 There are no graphs or diagrams accompanying this text.
Transcribed Image Text:An op-amp comparator in a firing circuit can produce waveforms at the output of up to 24 V peak-to-peak without any distortion. An inverse cosine-based firing circuit with a voltage range from +12 to -12 (reference voltage) is used to produce a gating signal for the SCR at the desired delay angle. If the reference voltage is -6.0 volts, the delay angle (in degrees) would be: - A. None of the other choices are correct - B. 150 - C. -120 - D. 120 - E. 60 There are no graphs or diagrams accompanying this text.
Expert Solution
Step 1

Given data,

Peak-to-peak input voltage is 24V. 
Thus, the maximum input voltage Vm is 12V.
The fact that the dc reference voltage Ec shifts from +12 to -12V is also a given.
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