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प्रश्न
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.
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उत्तर
A junction diode allows current to pass only when it is forward biased. So, if an alternating voltage is applied across a diode the current flows only in that part of the cycle when the diode is forward biased. This property is used to rectify alternating voltages and the circuit used for this purpose is called a rectifier.
Circuit Diagram
Working with input and output waveforms
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संबंधित प्रश्न
Draw the circuit diagram of a full wave rectifier. Explain its working showing its input and output waveforms.
When the diode shows saturated current, dynamic place resistance is _____________ .
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.
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 ______.
- RL should be increased.
- input frequency should be decreased.
- input frequency should be increased.
- capacitors with high capacitance should be used.
Draw the output waveform across the resistor (Figure).
Give two differences between a half-wave rectifier and a full-wave rectifier.
Draw a labelled circuit diagram of a full wave rectifier. Show graphically how the output voltage varies with time.
