With regard to the comparator shown in Fig....

Question 1 / 20TzAr9bUYosVUOsKWc2eo

Question 1 of 20TzAr9bUYosVUOsKWc2eo

With regard to the comparator shown in Fig. 8C11, the input is a sinusoid. Nominal high level output of the comparator is 4.5 volts. Choose the most correct statement regarding the input and output.

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Question 1 of 20

TzAr9bUYosVUOsKWc2eo

With regard to the comparator shown in Fig. 8C11, the input is a sinusoid. Nominal high level output of the comparator is 4.5 volts. Choose the most correct statement regarding the input and output.

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🔍 Key Concepts

• Comparator threshold behavior when the input is a sine wave (what voltage or phase point makes the output switch?) • Relationship between zero crossings, peaks, and phase angles (0°, 90°, 180°, etc.) for a sinusoid • Difference between positive and negative zero crossings, and how that affects when a rising edge will appear at the output

💭 Think About

• Sketch one full cycle of a sine wave and clearly mark the positive zero crossing, negative zero crossing, and the positive peak. Then think: at which of those points would a typical comparator change state? • If the comparator output is high when the input is above a certain threshold, at roughly what phase angle does that transition happen if the threshold is near zero? Does it align more naturally with a zero crossing or with a peak? • Look at each choice and ask: does this describe a rising edge that logically follows from when the sine wave crosses the threshold that makes the comparator change state?

✅ Before You Answer

• Be clear on the phase relationship: zero crossing of a sine wave vs its peak (how many degrees apart?) • Distinguish between leading and trailing in time/phase: which waveform changes first? • Verify whether a comparator with a nominal high output of 4.5 V would more likely switch near zero crossing or near the maximum amplitude of the sine wave, given typical comparator operation.

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Question 1 of 20

With regard to the comparator shown in Fig. 8C11, the input is a sinusoid. Nominal high level output of the comparator is 4.5 volts. Choose the most correct statement regarding the input and output.

The leading edge of the output waveform occurs 180 degrees after positive zero crossing of the input waveform.

The rising edge of the output waveform trails the positive zero crossing of the input waveform by 45 degrees.

The rising edge of the output waveform trails the negative zero crossing of the input waveform by 45 degrees.

The rising edge of the output waveform trails the positive peak of the input waveform by 45 degrees.

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Question 1 / 20TzAr9bUYosVUOsKWc2eo

Question 1 of 20TzAr9bUYosVUOsKWc2eo

With regard to the comparator shown in Fig. 8C11, the input is a sinusoid. Nominal high level output of the comparator is 4.5 volts. Choose the most correct statement regarding the input and output.

Back

Question 1 of 20

TzAr9bUYosVUOsKWc2eo

With regard to the comparator shown in Fig. 8C11, the input is a sinusoid. Nominal high level output of the comparator is 4.5 volts. Choose the most correct statement regarding the input and output.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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