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Optoisolator

Optoisolator An optoisolator (also called optocoupler) is a device that uses light to couple a signal from its input (a photoemitter e.g., a...

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Photo-diode

Photo-diode   photodiodes-A photo-diode is a reverse-biased silicon or germanium pn junction in which reverse current increases when the jun...

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photodiodes applications

Applicaton of Photo-diodes   There are a large number of applications of photo-diodes. However, we shall five two applications of photo-diod...

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Applications of LEDs

Applications of LEDs   The LED is a low-power device. The power rating of a LED is of the order of milliwatts. This means that it is useful ...

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Advantages of LED

Advantages of LED     The light-emitting diode (LED) is a solid-state light source. LEDs have replaced incandescent lamps in many applicati...

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light emitting diode led

Light-Emitting Diode (LED)   A light-emitting diode (LED) is a diode that gives off visible light when forward biased. Light-emitting diodes...

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Zener Diode as Voltage Stabiliser

Zener Diode as Voltage Stabiliser   A zener diode can be used as a voltage regulator to provide a constant voltage from a source whose volta...

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Equivalent Circuit of Zener Diode

Equivalent Circuit of Zener Diode   The analysis of circuits using zener diodes can be made quite easily by replacing the zener diode by its...

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Zener Diode as Voltage Stabilizer

Zener Diode as Voltage Stabilizer A Zener diode can be used as a voltage stabilizer by using it in reverse bias. When the Zener diode is con...

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Voltage Multipliers

Voltage Multipliers   Voltage Multipliers-With a diode, we can build a rectifier to produce a d.c. voltage that is nearly equal to the peak ...

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