What is PN Zener diode?

A Zener diode is a silicon semiconductor device that permits current to flow in either a forward or reverse direction. The diode consists of a special, heavily doped p-n junction, designed to conduct in the reverse direction when a certain specified voltage is reached.

What is the difference between Schottky diode and PN diode?

Schottky generally has lower reverse voltage max. You can easily find silicon diodes with 20-1400v ranges, while commonly schottky is 20v-60v. Schottky is extremely fast recovery, even faster than so-called “fast recovery” silicon diodes.

What is the Zener current?

Current : The current, IZM, of a Zener diode is the maximum current that can flow through a Zener diode at its rated voltage, VZ. This defines the maximum power that can be dissipated by the package, and it is the product of the voltage across the diode multiplied by the current flowing through it.

When does a Zener diode act as a normal diode?

Zener Diode acts as a normal diode when the applied voltage is less than the Zener breakdown voltage . Hence it is widely used in Clipping Circuits. Clipping Circuits could be designed to clip the signal in the positive, negative or both regions.

What is the difference between ideal diode and a real diode?

An Ideal diode also acts as a switch. When the diode is forward biased it acts like a closed switch as shown in the figure below. Whereas, if the diode is reversed biased, it acts as an open switch as shown in the figure below: Real Diode. A Real diode contains barrier potential V 0 (0.7 V for silicon and 0.3 V for Germanium) and a forward resistance R F of about 25 ohms.

What’s the purpose of the Zener diodes?

Zener diodes are widely used in electronic equipment of all kinds and are one of the basic building blocks of electronic circuits. They are used to generate low power stabilized supply rails from a higher voltage and to provide reference voltages for circuits, especially stabilized power supplies.

What is what is the difference between diode and transistors?

Key Differences Between Diode and Transistor The crucial difference between diode and transistor is that the diode is two terminal device while the transistor is the three terminal device. PN junction diode consists of one depletion region, i.e. The diode is considered as a switch as it can perform switching, but the transistor can perform switching as well as amplification.