Semiconductor Diode Characteristics: Si, Zener, and LED
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Questions and Answers

What is the essential electrical characteristic of a diode?

Carrier flow is permitted in one direction and is not allowed in the other.

What are the objectives of the experiment?

  1. To identify the components and equipment required.
  2. To observe the current through Si diode, zener diode, and LED diode for various voltages.
  3. To identify the different regions of operation of Si diode and zener diode from their characteristics.
  4. To identify the operation of LED diode.

What is the procedure for Si diode?

Connect the circuit shown in figure 1&2. Record the voltage across the diode (V) and the current (I) through it as a function of the input supply voltage.

What is the procedure for Zener diode?

<p>Connect the circuit shown in figure 3. Vary the input supply voltage in short steps and record the voltage across the zener and current flowing through the zener. Note and record the value of zener voltage that cause rapid increase of the current.</p> Signup and view all the answers

What is the procedure for LED diode?

<p>Connect the circuit shown in figure 4. Change the supply voltage according to table 2 to record diode voltages and currents. Note and record the value of the current when the light began emitting.</p> Signup and view all the answers

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