Question:
The device used for voltage regulation is
The device used for voltage regulation is
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- Zener Diode: Used for voltage regulation due to its constant voltage characteristic in reverse breakdown.
- Photo Diode: Detects light, converts light to current/voltage.
- LED (Light Emitting Diode): Emits light when current flows through it.
- Solar Cell (Photovoltaic Cell): Converts light energy into electrical energy.
Updated On: Jun 5, 2025
- Zener diode
- photo diode
- light emitting diode
- solar cell
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The Correct Option is A
Solution and Explanation
- Zener diode: This diode is designed to operate in the reverse breakdown region.
When the reverse voltage across a Zener diode reaches its breakdown voltage (Zener voltage), it conducts current while maintaining a nearly constant voltage across itself.
This property makes it suitable for voltage regulation, i.
e.
, providing a stable output voltage despite variations in input voltage or load current.
- Photo diode: This diode converts light energy into electrical current.
It is used as a light sensor.
It is not primarily used for voltage regulation.
- Light Emitting Diode (LED): This diode emits light when forward biased.
It is used for indication, lighting, displays, etc.
It is not used for voltage regulation.
- Solar cell: This device converts light energy (usually sunlight) directly into electrical energy (voltage and current).
It is a power source, not a voltage regulator in the sense of stabilizing a varying input voltage.
Therefore, the device used for voltage regulation among the given options is the Zener diode.
This matches option (1).
When the reverse voltage across a Zener diode reaches its breakdown voltage (Zener voltage), it conducts current while maintaining a nearly constant voltage across itself.
This property makes it suitable for voltage regulation, i.
e.
, providing a stable output voltage despite variations in input voltage or load current.
- Photo diode: This diode converts light energy into electrical current.
It is used as a light sensor.
It is not primarily used for voltage regulation.
- Light Emitting Diode (LED): This diode emits light when forward biased.
It is used for indication, lighting, displays, etc.
It is not used for voltage regulation.
- Solar cell: This device converts light energy (usually sunlight) directly into electrical energy (voltage and current).
It is a power source, not a voltage regulator in the sense of stabilizing a varying input voltage.
Therefore, the device used for voltage regulation among the given options is the Zener diode.
This matches option (1).
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