What characteristic of Zener diode makes it useful as voltage regulator?
The Zener diode specially made to have a reverse voltage breakdown at a specific voltage. Its characteristics are otherwise very similar to common diodes. In breakdown the voltage across the Zener diode is close to constant over a wide range of currents thus making it useful as a shunt voltage regulator.
What is Zener diode and how it is used 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.
When used as a voltage regulator a Zener diode is normally?
Zener Diodes are widely used as Shunt Voltage Regulators to regulate the voltage across small loads. Zener Diodes have a sharp reverse breakdown voltage and breakdown voltage will be constant for a wide range of currents.
How does Zener diode work?
Zener diodes behave much the same as ordinary silicon diodes and start conducting at around 0.7V
How do Zener diodes work?
How do Zener Diodes Work? Current – Voltage Curve of a Zener Diode. The current-voltage characteristic curve (I-V curve) of a Zener diode resembles that of a conventional diode. Zener Breakdown. Zener diodes operate due to the principle of Zener Breakdown. Avalanche Breakdown. Zener vs.
What is the current, IZM, of a Zener diode?
Current : The current, IZM, of a Zener diode is the maximum current that can flow through a Zener diode at its rated voltage, VZ. Typically there is also a minimum current required for the operation of the diode. As a rough rule of thumb, this can be around 5 to 10 mA for a typical leaded 400 mW device.