NEET · Physics · STD 12 - 14. Semicondutor electronics
A full wave rectifier circuit with diodes \(\left(D_1\right)\) and \(\left(D_2\right)\) is shown in the figure. If input supply voltage \(V_{\text {in }}=220 \sin (100 \pi t)\) volt, then what happens at \(t=15\text{msec}\)?
- A \(D_1\) is forward biased, \(D_2\) is reverse biased
- B \(D_1\) is reverse biased, \(D_2\) is forward biased
- C \(D_1\) and \(D_2\) both are forward biased
- D \(D_1\) and \(D_2\) both are reverse biased
Answer & Solution
Correct Answer
(B) \(D_1\) is reverse biased, \(D_2\) is forward biased
Step-by-step Solution
Detailed explanation
\(\text {At } t =15 msec\)
\(V _{\text {in }}=220 \sin \left(100 \pi \times 15 \times 10^{-3}\right)\)
\(=220 \sin \left(\frac{3 \pi}{2}\right)=-220 V\)
So diode \(D_1\) is in reverse bias and \(D_2\) is in forward bias
\(V _{\text {in }}=220 \sin \left(100 \pi \times 15 \times 10^{-3}\right)\)
\(=220 \sin \left(\frac{3 \pi}{2}\right)=-220 V\)
So diode \(D_1\) is in reverse bias and \(D_2\) is in forward bias
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