Draw the output waveform across the resistor (Figure). - Physics

Short Note

Draw the output waveform across the resistor (Figure).



The diode act as a half wave rectifier, it offers low resistance when forward biased and high resistance when reverse biased. So the output is obtained only when positive input is given, so the output waveform is

Concept: Application of Junction Diode as a Rectifier
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Chapter 14: Semiconductor Electronics - Exercises [Page 91]


NCERT Exemplar Physics Class 12
Chapter 14 Semiconductor Electronics
Exercises | Q 14.20 | Page 91


Draw the circuit diagram of a full wave rectifier. Explain its working showing its input and output waveforms.

Briefly explain how the output voltage/current is unidirectional.

Draw the circuit diagram of a half wave rectifier and explain its working.

In half-wave rectification, what is the output frequency if the input frequency is 50 Hz. What is the output frequency of a full-wave rectifier for the same input frequency.

When the diode shows saturated current, dynamic place resistance is _____________ .

Fill in the blank.
The ability of a junction diode to __________ an alternating voltage is based on the fact that it allows current to pass only when it is forward biased.

Draw the circuit diagram of a full wave rectifier.

Explain with a proper diagram how an ac signal can be converted into dc (pulsating) signal with output frequency as double than the input frequency using pn junction diode. Give its input and output waveforms.

The device which uses centre-tapped secondary of the transformer is

A 220 V A.C. supply is connected between points A and B (figure). What will be the potential difference V across the capacitor?

The output of the given circuit in figure is given below.

To reduce the ripples in a rectifier circuit with capacitor filter ______.

  1. RL should be increased.
  2. input frequency should be decreased.
  3. input frequency should be increased.
  4. capacitors with high capacitance should be used.

Give two differences between a half-wave rectifier and a full-wave rectifier.

Name the device which utilizes the unilateral action of a pn diode to convert ac into dc.

Draw a labelled circuit diagram of a full wave rectifier. Show graphically how the output voltage varies with time.


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