Zener diode coupling - ορισμός. Τι είναι το Zener diode coupling
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Τι (ποιος) είναι Zener diode coupling - ορισμός

DIODE THAT ALLOWS CURRENT TO FLOW IN THE REVERSE DIRECTION AT A SPECIFIC VOLTAGE
Zener Diode; Stabilitron; Zehner diode; Xener diode; Zener diodes
  • Current-voltage characteristic of a Zener diode with a breakdown voltage of 3.4 V.
  • Buried Zener structure
  • Temperature coefficient of Zener voltage against nominal Zener voltage.
  • Zener diode shown with typical packages. ''Reverse'' current <math>-i_Z</math> is shown.
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Zener diode         
A Zener diode is a special type of diode designed to reliably allow current to flow "backwards" when a certain set reverse voltage, known as the Zener voltage, is reached.
Zener diode         
['zi:n?]
¦ noun Electronics a semiconductor diode in which at a critical reverse voltage a large reverse current can flow.
Origin
1950s: named after the American physicist Clarence M. Zener.
Flyback diode         
  • Circuits illustrating the use of a flyback diode
DIODE CONNECTED ACROSS AN INDUCTOR USED TO ELIMINATE FLYBACK (VOLTAGE SPIKES ACROSS INDUCTIVE LOADS)
Free Wheeling Diode; Catch diode; Freewheeling diode; Commutating diode; Fly-back diode
A flyback diode is any diode connected across an inductor used to eliminate flyback, which is the sudden voltage spike seen across an inductive load when its supply current is suddenly reduced or interrupted. It is used in circuits in which inductive loads are controlled by switches, and in switching power supplies and inverters.

Βικιπαίδεια

Zener diode

A Zener diode is a special type of diode designed to reliably allow current to flow "backwards" (inverted polarity) when a certain set reverse voltage, known as the Zener voltage, is reached.

Zener diodes are manufactured with a great variety of Zener voltages and some are even variable. Some Zener diodes have an abrupt, heavily doped p–n junction with a low Zener voltage, in which case the reverse conduction occurs due to electron quantum tunnelling in the short distance between p and n regions − this is known as the Zener effect, after Clarence Zener. Diodes with a higher Zener voltage have lighter doped junctions which causes their mode of operation to involve avalanche breakdown. Both breakdown types are present in Zener diodes with the Zener effect predominating at lower voltages and avalanche breakdown at higher voltages.

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. They are also used to protect circuits from overvoltage, especially electrostatic discharge.