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Page 1 Zener Diode Page 2 Zener Diode Outlines ? Introduction of Zener Diode ? Construction of Zener Diode ? Working of Zener Diode ? Application of Zener Diode ? Numerical of Zener Diode Page 3 Zener Diode Outlines ? Introduction of Zener Diode ? Construction of Zener Diode ? Working of Zener Diode ? Application of Zener Diode ? Numerical of Zener Diode Introduction The zener diode is a silicon pn junction devices that differs from rectifier diodes because it is designed for operation in the reverse-breakdown region. The breakdown voltage of a zener diode is set by carefully controlling the level during manufacture. The basic function of zener diode is to maintain a specific voltage across it’s terminals within given limits of line or load change. Typically it is used for providing a stable reference voltage for use in power supplies and other equipment. Page 4 Zener Diode Outlines ? Introduction of Zener Diode ? Construction of Zener Diode ? Working of Zener Diode ? Application of Zener Diode ? Numerical of Zener Diode Introduction The zener diode is a silicon pn junction devices that differs from rectifier diodes because it is designed for operation in the reverse-breakdown region. The breakdown voltage of a zener diode is set by carefully controlling the level during manufacture. The basic function of zener diode is to maintain a specific voltage across it’s terminals within given limits of line or load change. Typically it is used for providing a stable reference voltage for use in power supplies and other equipment. Construction of Zener Zener diodes are designed to operate in reverse breakdown. Two types of reverse breakdown in a zener diode are avalanche and zener. The avalanche break down occurs in both rectifier and zener diodes at a sufficiently high reverse voltage. Zener breakdown occurs in a zener diode at low reverse voltages. A zener diode is heavily doped to reduced the breakdown voltage. This causes a very thin depletion region. The zener diodes breakdown characteristics are determined by the doping process Zeners are commercially available with voltage breakdowns of 1.8 V to 200 V. Page 5 Zener Diode Outlines ? Introduction of Zener Diode ? Construction of Zener Diode ? Working of Zener Diode ? Application of Zener Diode ? Numerical of Zener Diode Introduction The zener diode is a silicon pn junction devices that differs from rectifier diodes because it is designed for operation in the reverse-breakdown region. The breakdown voltage of a zener diode is set by carefully controlling the level during manufacture. The basic function of zener diode is to maintain a specific voltage across it’s terminals within given limits of line or load change. Typically it is used for providing a stable reference voltage for use in power supplies and other equipment. Construction of Zener Zener diodes are designed to operate in reverse breakdown. Two types of reverse breakdown in a zener diode are avalanche and zener. The avalanche break down occurs in both rectifier and zener diodes at a sufficiently high reverse voltage. Zener breakdown occurs in a zener diode at low reverse voltages. A zener diode is heavily doped to reduced the breakdown voltage. This causes a very thin depletion region. The zener diodes breakdown characteristics are determined by the doping process Zeners are commercially available with voltage breakdowns of 1.8 V to 200 V. Working of Zener A zener diode is much like a normal diode. The exception being is that it is placed in the circuit in reverse bias and operates in reverse breakdown. This typical characteristic curve illustrates the operating range for a zener. Note that it’s forward characteristics are just like a normal diode.Read More
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FAQs on PPT: Zener Diodes - Analog and Digital Electronics - Electrical Engineering (EE)
| 1. What is a Zener diode? |  |
A Zener diode is a type of diode specifically designed to operate in the reverse breakdown region. It is used to regulate voltage by maintaining a constant voltage across its terminals, even when the input voltage changes.
| 2. How does a Zener diode work? | |
A Zener diode works based on the principle of avalanche breakdown or Zener breakdown. When the reverse bias voltage applied across the diode reaches a certain threshold, called the Zener voltage, the diode starts conducting in the reverse direction and allows current to flow. This creates a stable voltage drop across the diode, ensuring a regulated output voltage.
| 3. What are the applications of Zener diodes? | |
Zener diodes have various applications, including voltage regulation, voltage reference, overvoltage protection, and waveform shaping. They are commonly used in power supplies, voltage regulators, surge protectors, and signal conditioning circuits.
| 4. How do I select the right Zener diode for my application? | |
To select the right Zener diode, you need to consider the desired Zener voltage, power dissipation rating, and maximum current requirement of your application. Additionally, you should check the datasheet of the Zener diode to ensure its specifications meet your specific requirements.
| 5. Can a Zener diode be used as a rectifier? | |
No, a Zener diode cannot be used as a rectifier. While both Zener diodes and rectifier diodes are types of diodes, they have different characteristics and functions. Rectifier diodes are used for converting alternating current (AC) to direct current (DC), while Zener diodes are used for voltage regulation and protection.
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