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Which of the following IC is a variable negative voltage regulator?

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in Biomedical Instrumentation by (76.6k points)
Which of the following IC is a variable negative voltage regulator?

(a) 7912

(b) 7905

(c) LM337

(d) LM317

This question was posed to me by my college professor while I was bunking the class.

The above asked question is from Telemedicine System topic in division Telemedicine Technology of Biomedical Instrumentation

1 Answer

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Best answer
Right choice is (c) LM337

Explanation: LM337 is a variable negative voltage regulator IC. It is capable of drawing current up to 1.5A and voltage range from (-1.25V) – (-30V) ideally. LM317 is a variable positive voltage regulator IC. 7905 and 7912 are fixed voltage regulator IC that give output voltage as -5V and -12V respectively.

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