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A Zener diode is commonly used in voltage regulation applications. Here are some of the key uses:
In summary, Zener diodes are most commonly used in circuits where a stable voltage is needed, or when you need to limit voltage to a certain level to protect components from over-voltage.
- Voltage Regulators: Zener diodes are often used in voltage regulation circuits to maintain a stable output voltage, even when the input voltage varies. They are popular in power supplies to protect sensitive components from voltage spikes or drops.
- Clipping Circuits: Zener diodes are used in clipping circuits to limit the voltage to a certain level. When the voltage exceeds the Zener diode's breakdown voltage, it "clips" the excess, preventing damage to other components.
- Surge Protectors: Zener diodes can be used as surge protectors to protect circuits from voltage spikes. For example, they are used in phone lines or power lines to protect against lightning strikes or electrical surges.
- Reference Voltage Sources: Zener diodes are used to provide a stable reference voltage in analog-to-digital converters (ADC) or digital-to-analog converters (DAC), where precise voltage levels are needed.
- Battery Chargers: They can be used in battery charging circuits to maintain a stable charging voltage.
In summary, Zener diodes are most commonly used in circuits where a stable voltage is needed, or when you need to limit voltage to a certain level to protect components from over-voltage.