In this blog, we will discuss the difference between a diode and a Zener diode. There are many differences between a diode and a zener diode.
Although both the diode and the zener diode belong to the diode family, they are for different applications.
What is a Diode?
A diode is a two-terminal semiconductor device. It allows the current to flow in only one direction.
The current flows in the diode during forward bias.
It blocks the current during reverse bias. However, a very small leakage current can still flow.
Applications of diodes
Since current flows only in one direction, we use it for rectification, as in AC-to-DC conversion.
It is also used to block reverse voltage.
Other applications of diodes are in clamping.
They can also be used to double the peak voltage of the AC voltage. to be useful in generating high voltage for testing.
It can also be used for blocking reverse current in DC circuits.
Also used to limit reverse voltage in the DC power supply of IC circuits.
Making a simple “OR” gate
Input voltage protection in operational amplifier circuits.
What is a Zener diode?
A Zener diode is a special type of diode designed to operate in reverse voltage.
If we apply a reverse voltage across the zener diode, then it allows current to flow once the voltage reaches the Zener breakdown voltage (Vz).
Applications of the Zener diode
The main applications of the Zener diodes are:
- Voltage regulators
- Overvoltage protection for electronics
- Voltage reference circuits in electronics, like in comparator circuits.
- Protection of integrated circuits
- Blocking the OP amp from going into saturation
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Further read, the current transformer with an open circuit.
Also, read AC or DC, which is more dangerous.
Further read, which motor is used in the train Engine?
About the author – G K Agrawal B.Sc and B.Tech (from HBTU Kanpur), Retd. Sr DGM Design (BHEL), the inventor of patents, has lifelong industry experience in the electrical and electronics design field of R&D. He worked for BHEL. He shares his experience and knowledge on blogs and YouTube. Read the profile here.
