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What is voltage regulator in Zener diode?

What is voltage regulator in Zener diode?

A voltage regulator is an electronic circuit that provides a stable DC voltage independent of the load current, temperature and AC line voltage variations. A Zener diode of break down voltage VZ is reverse connected to an input voltage source VI across a load resistance RL and a series resistor RS.

What is breakdown voltage of Zener diode explain its use as a voltage regulator?

Voltage regulator diodes utilize the reverse characteristics of a pn junction. Since this breakdown voltage is also called Zener voltage, voltage regulator diodes are also called Zener diodes. This voltage may be used as a constant voltage power supply or a reference voltage for electronic circuits.

What is the difference between Zener diode and ordinary diode?

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A diode is a semiconductor device which conducts in one direction only. A Zener diode is a semiconductor device which conducts in forward biased as well as reversed biased. A normal diode if operated in reversed biased will get destroyed.

What are the different types of IC voltage regulators?

There are three types of IC voltage regulators: IC linear voltage regulators, IC switching voltage regulators, and DC/DC converter chips. IC linear voltage regulators use an active pass element to reduce the input voltage to a regulated output voltage.

How does a voltage regulator work IC?

A voltage regulator generates a fixed output voltage of a preset magnitude that remains constant regardless of changes to its input voltage or load conditions. It compares the output voltage with a precise reference voltage and adjusts the pass device to maintain a constant output voltage.

What is the difference between Zener diode and photo diode?

A photodiode is a semiconductor device that converts light into current. A Zener diode allows current to flow from its anode to its cathode like a normal semiconductor diode, but it also permits current to flow in the reverse direction when its “Zener voltage” is reached. …

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What is a 7805 voltage regulator?

A Brief Note on 7805 Voltage Regulator. 7805 is a three terminal linear voltage regulator IC with a fixed output voltage of 5V which is useful in a wide range of applications.

What is the output voltage of the IC 7805?

It is an IC in the 78XX family of linear voltage regulators that produce a regulated 5V as output. 7805 is a three terminal linear voltage regulator IC with a fixed output voltage of 5V which is useful in a wide range of applications.

What is the difference between Zener diode and semiconductor diode?

The primary objective of the Zener diode as a voltage regulator is to maintain a constant voltage. Let us say if Zener voltage of 5 V is used then, the voltage becomes constant at 5 V, and it does not change. A Semiconductor Diode blocks current in the reverse direction but will suffer damage if the reverse voltage applied across becomes too high.

Why do I need a voltage regulator for a Zener diode?

Zener diodes cannot provide voltage regulation for wide range of load current, and that is why to need a voltage regulator. Zener diodes are better to be used in very low power circuits as voltage references or simillar fanctions.