Two p-n junction diodes \(D_1\) and \(D_2\) are connected as shown in the figure. \(A\) and \(B\) are input signals and \(C\) is the output. The given circuit will function as a _______.
Two p-n junction diodes \(D_1\) and \(D_2\) are connected as shown in the figure. \(A\) and \(B\) are input signals and \(C\) is the output. The given circuit will function as a _______.
Show Hint
- NOR Gate
- NAND Gate
- AND Gate
- OR Gate
The Correct Option is C
Solution and Explanation
Concept: Diode logic circuits use the conducting (forward-biased) and non-conducting (reverse-biased) states of diodes to implement basic logic gates.
Step 1: Understand the circuit
A pull-up resistor \(R\) connects the output node \(C\) to \(+5\,\text{V}\).
Diodes \(D_1\) and \(D_2\) connect inputs \(A\) and \(B\) respectively to the output node.
The diodes are oriented such that a LOW input can pull the output LOW.
Step 2: Truth table analysis 
Explanation:
If either \(A=0\) or \(B=0\), the corresponding diode conducts and pulls \(C\) LOW.
Only when both \(A=1\) and \(B=1\), both diodes are reverse-biased and the pull-up resistor makes \(C\) HIGH.
Final Answer: \[ \boxed{\text{AND Gate}} \]
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