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Quenching diodes are used to protect the control circuit of a relay. Power is applied to a relay's coil to close it. When this power is released there is a backwards flowing pulse that can wipe out solid state devices like transistors, LEDs, chips, etc...
The quenching diode is applied in parallel with the relay coil so that the cathode is on the positive side. During normal operation, the diode doesn't conduct and the relay operates normally.
When the relay is switched off, the "reversed" back pulse is absorbed due to the low voltage drop of the diode which limits the spike.
What else can I help you with?
Practical diode model define and explained?
a way of diode modelling in which diode just work as an energy source in the circuit
What is the disadvantage and advantage of photo diode and transistor?
photo diode donot work for long distance photo diode act as a receiver
How transistor work as a diode?
A: Actually a transistor have two diode with the base mas a common terminal. the characteristics of these tow diodes however are not the same as a common diode
When does the diode not allowed to flow the current?
A diode is a one-way gate for electrical current to flow through. You must have the right size diode for the amount of current that will be used in your circuit. The stripe on the diode is your output end. That is, the current must enter your diode at the non-stripe end and leave at the end with the stripe. This coincides with the diode symbol used on your schematic. If your diode is in backwards, the circuit will not work as the gate in the diode will block the current just the way it should.
Does the zener diode work after breakdown?
A: Believe it or not that is the only time that it is useful
Diode will work on zero bias or not?
diode does not work on zero bias
Practical diode model define and explained?
a way of diode modelling in which diode just work as an energy source in the circuit
Does a diode works when the ignition key is off?
No a diode will not work when the ignition key is off.
What is the disadvantage and advantage of photo diode and transistor?
photo diode donot work for long distance photo diode act as a receiver
How do you spell quenching?
That is the correct spelling of "quenching" (eliminating, extinguishing).
How do LEDs work?
L.E.D. Stands for Light Emitting Diode so it is a Diode that makes light...
What are the units of the quenching constant in the context of fluorescence quenching?
The units of the quenching constant in the context of fluorescence quenching are typically expressed as reciprocal concentration per unit time, such as M-1s-1.
How transistor work as a diode?
A: Actually a transistor have two diode with the base mas a common terminal. the characteristics of these tow diodes however are not the same as a common diode
What is 'Quenching?
Color quenching is the attenuation of photons produced by a scintilator due to absorption and scattering. This effect, combined with the chemical quenching (attenuation of the transfer of energy from the solvent to the scintillator gives the total quenching effect of the scintillator/solvent mix.
How diode work as semiconductor?
Diode is made of P and N type semiconductors having PN junction. The question is meanigless.
Why does quenching in oil produce different results than quenching in water?
The fluid for quenching is specific for each type of steel; choosing an inappropriate fluid lead to bad results.
Will a zener diode work the same as a germanium diode?
No. An ordinary diode, be it silicon or germanium, conducts in one direction only, whereas a zener diode conducts in both directions, but at different voltages. An ordinary diode is used to rectify, using its forward bias characteristics, while a zener diode is used to regulate, using its reverse bias characteristics.
