A zener diode is designed to be operated in reverse bias, and have a specified breakdown voltage. For example, if you wanted a part that is supposed to get 10V applied to it, and you only have a 12V rail, you can put a resistor and a 10V zener diode in series, and the zener diode will make sure that only 10V get dropped across it. Any more and it will begin conducting.
It will draw enough current to drop the excess voltage across the series resistor. If the load on the output terminals increases, tending to reduce the output voltage, the Zener just takes less current. The idea is that the total current through the series resistor is enough to stabilise the output at 10V.
ANSWER: A zener is a diode that has the property that when reversed bias is applied to exibit a breakdown of a voltage with a sharp knee. This property can be used as a regulator since the voltage will not change it the current trough the zener changes.
zener resistance of a zener diode is the resistance of the zener diode but which is the resistance of a diode
breakdown condition
Zener diode is heavily doped pn junction diode.
zener diode :zener diode operates under reverse bias voltageideal diode :ideal diode operates under forward bias voltage
A zener diode cannot be used as switch.
Yes. The intended use of a zener diode is to be reverse biased at the breakdown voltage. In this mode, the zener has high slope in the current to voltage curve, making it a good choice for voltage regulation.
Dr. Clarence Melvin Zener of Southern Illinois University invented the zener diode.
zener diode is a revers bias diode which used for voltage regulation.
The leakage current of a (zener) diode is the current that leaks when a diode is connected in reverse biased.
The leakage current of a (zener) diode is the current that leaks when a diode is connected in reverse biased.
The difference between the pn-junction diode and the zener diode is that the pn-junction diode is used for rectification while the zener diode is used for rectification and stabilization. Also, the zener diode can function in the breakdown region while the pn-juntion diode can not function in that regime.
Since they are in parallel, the 3.3V zener diode will "kick in" first when you reach 3.3V, and the circuit will pretty much act the same as if the 7V zener diode isn't there at all.