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Questions and Answers
What is the primary objective of observing the current through Si diode, zener diode, and LED diode for various voltages?
What is the essential electrical characteristic of a diode?
What is the purpose of noting and recording the value of the current when the light begins emitting in the LED diode?
In the experiment, what causes a rapid increase in current in the zener diode?
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What region of operation is observed by recording the voltage across the Si diode and the current through it as a function of the input supply voltage?
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What type of diode is used to observe the rapid increase in current at a specific zener voltage?
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Study Notes
Objective of Observing Diodes
- The primary objective is to analyze electronic behavior across different types of diodes: Si diode, zener diode, and LED diode under varying voltage conditions.
Essential Electrical Characteristic of a Diode
- The essential characteristic is its ability to conduct current primarily in one direction, demonstrating a significant voltage drop in the reverse direction until breakdown occurs.
Current Measurement in LED Diode
- Noting and recording current values when the LED begins emitting light helps determine the forward threshold voltage, which is critical for understanding its operational efficiency and performance.
Current Increase in Zener Diode
- A rapid increase in current in the zener diode occurs due to the diode entering its breakdown region at the specified zener voltage, allowing it to regulate voltage effectively.
Region of Operation for Si Diode
- The forward and reverse bias regions are assessed by monitoring the voltage across the Si diode and the current flowing through it as input supply voltage changes.
Type of Diode for Current Observation
- The zener diode is specifically used to observe the sharp rise in current at its designated zener voltage, showcasing its unique voltage regulation capability.
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Description
Explore the essential electrical characteristics of semiconductor diodes such as Si diode, Zener diode, and LED. Learn about the behavior of diodes when subjected to an external supply voltage and observe the current flow through each type of diode.
