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The diode rectifier works well enough if the supply voltage is much than greater than 0.7V. For smaller voltage (of few hundreds of millivolt) input which of the following can be used?
  • a)
    Superdiode
  • b)
    Peak rectifier
  • c)
    Precision rectifier
  • d)
    None of the mentioned
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The diode rectifier works well enough if the supply voltage is much th...
For the supply voltages less than 0.7V super diodes are used.
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Most Upvoted Answer
The diode rectifier works well enough if the supply voltage is much th...
Superdiode for Small Voltage Input:
To rectify a small voltage input of a few hundred millivolts, a superdiode can be used effectively.

What is a Superdiode?
A superdiode is a circuit that combines a diode with an operational amplifier to create a rectifier that can work with very low input voltages.

Working Principle:
- The operational amplifier in the superdiode circuit amplifies the voltage across the diode, allowing it to rectify signals that are much smaller than the typical forward voltage drop of a diode (around 0.7V).
- The amplified voltage across the diode is then used to drive the diode into conduction, effectively rectifying the input signal.

Advantages of Superdiode:
- Can rectify very small input voltages that a standard diode rectifier cannot handle.
- Provides a high input impedance, making it suitable for applications where the input signal source has high impedance.

Conclusion:
When dealing with small input voltages in the range of a few hundred millivolts, a superdiode circuit can be a suitable choice for rectification due to its ability to work effectively with such low voltage levels.
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The diode rectifier works well enough if the supply voltage is much than greater than 0.7V. For smaller voltage (of few hundreds of millivolt) input which of the following can be used?a)Superdiodeb)Peak rectifierc)Precision rectifierd)None of the mentionedCorrect answer is option 'A'. Can you explain this answer?
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