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Why a transistor cannot be used as a rec...

Why a transistor cannot be used as a rectifier ?

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If a transistor is to be used as Rectifier, then either emitter-base or base-collector has to be used as diode. For equated working of the said set of diodes, the number density of charge carriers in emitter and base, or base and collector must be nearly the same. As base is lightly doped and comparatively thin, so transistor cannot work as rectifier.
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BETTER CHOICE PUBLICATION-SEMI CONDUCTOR DEVICES-Short Answer Type Questions
  1. Write in brief about Photo-diodes.

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  2. In a transistor, base is always thin and lightly doped. (True/false)

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  3. Why a transistor cannot be used as a rectifier ?

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  4. The resistance of a p-n junction is low, when forward biased and is hi...

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  5. How does the width of the depletion region of a p-n junction vary if t...

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  6. Explain how the depletion layer and barrier potential are formed in pn...

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  7. Why does the thickness of depletion layer of pn-junction increases in ...

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  8. Explain with diagram, the working of a transistor as a common-emitter ...

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  9. What is an oscillator ? Draw a labelled circuit diagram for an oscilla...

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  10. With the help of circuit diagram, explain the working of transistor as...

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  11. Wha tis a zener diode? How is it symbollically represented? With the h...

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  12. How reverse current suddenly increases at the break down voltage in ca...

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  13. In a transistor, base is always thin and lightly doped. (True/false)

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  14. The resistance of a p-n junction is low, when forward biased and is hi...

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  15. Explain the following A transistor is a temperature - senstive device.

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  16. Explain , why the input resistance of a transistor is low and output r...

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  17. If the emitter and base of n-p-n transistor have same doping concentra...

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  18. What is an amplifier?

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  19. Draw a labelled circuit diagram of a full wave rectifier using junctio...

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  20. What is rectifier ? Explain the working of junction diode as a full wa...

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