What are the meanings of on voltage and zener voltage?

What are the meanings of on voltage and zener voltage?

The diode Zener is a particular diode which has the property of allowing current to pass from a certain tension reverse: this tension threshold is called the zener voltage. It is a controlled breakdown, where the current stabilizes and does not take destructive values, as for a conventional diode.

How does a Zener diode work?

The zener diodes are frequently used to regulate the voltage in a circuit. When reverse connected in parallel with a variable voltage source, a zener-diode becomes conductive when the voltage reaches the avalanche voltage of the diode. It then maintains the voltage at this value.

How does the resistance of a reverse-biased Zener diode vary beyond the Zener voltage?

At beyond the tension threshold we often model the diode by a linear characteristic of slope 1 / Rd. reverse bias lower than the tension of Zenerthe flow reverse is practically nil. At of the of this tensionthe characteristic can be modeled by a straight line with a steep slope.

What is threshold voltage?

(Electricity, Physics) Tension voltage of a diode or transistor at which the conduction channel begins to form.

What is the Difference Between Zener Voltage and Reverse Voltage?

– Higher reverse voltage, but not yet equal to the zener voltage: still no current passing (the dam is still blocked) – The dam overflows a little: the difference in water height stabilizes and is approximately the height of the dam.

What is Zener Diode?

The zener diode is a special diode which has the property of letting the current flow from a certain reverse voltage: this threshold voltage is called the zener voltage. It is a controlled breakdown, where the current stabilizes and does not take destructive values, as for a conventional diode. Its symbol is:

How to stabilize a voltage from an unregulated voltage?

The zener diode is the ideal electronic component to stabilize a voltage from an unregulated voltage of greater value. If you wish to obtain a voltage of 12V from a voltage which varies from 20V to 25V for example, the assembly below is quite suitable.

What are the effects of a Zener diode?

Both effects work for intermediate voltages. Zener effect: the voltage across the terminals of the zener diode drops with temperature. Here, Vz < 5V. Simultaneous Zener effect + avalanche effect: the voltage across the diode depends little on temperature. For a given current, it is even constant.