What is the effect of temperature on on p-n junction diode????? ....etc

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viva questions on characteristics of led diode

LED Frequently Asked Questions
LED technology continues to develop rapidly as a general light source. As more LED lighting products are ntroduced on the market, what do retailers, energy efficiency advocates, and consumers need to know to make informed buying decisions?

why the LED emitting light but the PN junction diodes are not?
Injection electroluminescence or the light emitting process in a LED occurs when minority carriers recombine with carriers of the opposite type in a diode's band gap. ....etc

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To get full information or details of zener diode animation please have a look on the pages

http://seminarsprojects.net/Thread-direct-online-starter-for-single-phase-submersible-motor-pdf-wikipedia

if you again feel trouble on zener diode animation please reply in that page and ask specific fields in zener diode animation ....etc

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zener diode working animation ppt

The Zener Diode
In the previous Signal Diode tutorial, we saw that a reverse biased diode blocks current in the reverse direction, but will suffer from premature breakdown or damage if the reverse voltage applied across it is too high.

However, the Zener Diode or Breakdown Diode as they are sometimes called, are basically the same as the standard PN junction diode but are specially designed to have a low pre-determined Reverse Breakdown Voltage that takes advantage of this high reverse voltage. The zener ....etc

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physics photo diode characteristics viva question with answers

This light detector is a current-to-voltage converter. The FET input op-amp prevents the loading of the photodiode and the voltage at the output is proportional to the current in the photodiode. So long as the photodiode response to the light is linear, the output voltage is proportional to the light falling on the photodiode. ....etc

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ZENER DIODE TESTER

ABSTRACT

The testing of zener diodes requires a variable dc power supply. A typical test circuit can be constructed, as shown in figure 4-19. In this circuit, the variable power supply is used to adjust the input voltage to a suitable value for the zener diode being tested. With the zener diode connected no current will flow until the voltage across the diode is equal to the zener voltage. If the diode is ....etc

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The diodes are classified into different types based on their working principles and characteristics. These include Generic diode, Schotty diode, Shockley diode, Constant-current diode, Zener diode, Light emitting diode, Photodiode, Tunnel diode, Varactor, Vacuum tube, Laser diode, PIN diode, Peltier diode, Gunn diode, and so on. On a special case, this article discuss about Gunn diode s working, characteristics and applications.

What is a Gunn Diode?

A Gunn Diode is considered as a type of diode even though it does not contain any typic ....etc

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I WANT VIVA QUESTONS AND ITS ANSWERS FOR PN JUNCTION DIODE EXPERIMENT? ....etc

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in series zener diode data book download

Abstract

A Zener diode allows current to flow from its anode to its cathode like a normal semiconductor diode, but it also permits current to flow in the reverse direction when its Zener voltage is reached. Zener diodes have a highly doped, p-n junction. Normal diodes will also break down with a reverse voltage but the voltage and sharpness of the knee are not as well defined as for a Zener diode. Also normal diodes are not designed to operate in the breakdown region, but Zener diodes can reliably op ....etc

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