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What is the logic gate implemented in the following circuit?

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What is the logic gate implemented in the following circuit?

(a) OR

(b) AND

(c) NOT

(d) NOR

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

I need to ask this question from Diode Gates and Rectifiers topic in section Diode Circuit of Analog Circuits

1 Answer

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Best answer
Right option is (a) OR

Best explanation: In the given circuit, as a logic gate, E1 and E2 are digital inputs, 1 or 0. If the input is 1, the diode is forward biased and conducts, else it is reverse biased. So, the output is high whenever either of the input is high, or both of them are high, hence it acts as an OR gate.

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