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In the IC 7805, what is the minimum input voltage for proper functioning?

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in Analog Circuits by (87.8k points)
In the IC 7805, what is the minimum input voltage for proper functioning?

(a) 5V

(b) 6V

(c) 7V

(d) 8V

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I'm obligated to ask this question of Voltage Regulators in division Regulators of Analog Circuits

1 Answer

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Best answer
Right answer is (c) 7V

The explanation is: For a fixed voltage IC regulator, the input voltage should be at least 2V greater than the output voltage. A minimum voltage of 2V should be allowed to drop in the internal circuit of the IC.

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