Name: Logic Gates: Building Blocks
Uploaded: 2019-07-19
Duration: 6 min 33 s
Description: In this video, we will discuss the different logic gates and how these gates perform logical operations. Let's discover a lot more about logic gates.

Question

Describe the working of a P-N junction diode as a half-wave rectifier under the following heads: Working method.

Accepted Answer

The working of a pn junction diode as a half-wave rectifier:

Let during the first half of the cycle the secondary terminal $S_{1}$ of the transformer be positive relative to $S_{2}$ , then the junction diode is forward biased. Therefore, the current flows and its direction in load resistance $R_{L}$ is from A to B. In the next half-cycle, the terminal $S_{1}$ is negative relative to $S_{2}$ then the diode is in reverse bias, therefore no current flows in diode and hence there is no potential difference across load $R_{L}$ . Therefore, the output current in load flows only when $S_{1}$ is positive relative to $S_{2}$ . That is during the first half cycles of input a.c. the signal there is a current in a circuit and hence a potential difference across the load resistance $R_{L}$ while no current flows for the next half-cycle. The direction of current in load is always from A to B. Thus a single p-n junction diode acts as a half-wave rectifier.

Describe the working of a P-N junction diode as a half-wave rectifier under the following heads: Working method.

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