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Yes
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Yes they can but there are pitfalls.
A normal diode will have a high reverse breakdown voltage. A zener has a relatively low breakdown voltage (its "zener"voltage).
If a zener diode is used as a rectifier it must have a zener voltage at least twice the peak of the applied a.c.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoANSWER
Yes.
But you probably won't like the end result. A forward biased zener diode will conduct at about 0.7 V, but most of its properties will be undesirable when compared to other diodes. Also, if the rectified waveform goes beyond the zener voltage, the diode will conduct in reverse as well. Using a zener diode this way is rarely a preferred technique.
This forward conduction property is used in bidirectional transient voltage suppression diodes (often used to limit voltage spikes on the gates of FETs, for example). These TVS diodes are very similar to two zeners connected in series, anode to anode (or cathode to cathode, with the same result).
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What is Zener diode function?
Zener diodes are widely used as voltage references and as shunt regulators to regulate the voltage across small circuits. When connected in parallel with a variable voltage source so that it is reverse biased, aZener diode conducts when the voltage reaches the diode's reverse breakdown voltage.
What is the zener region?
The zener region describes the area on the performance curve (a graph of voltage across versus current through the junction) of a zener diode. The diode acts like a "regular" diode in the forward biased direction. When some 0.7 volts or so is reached, forward current begins to climb rapidly as voltage is increased (for silicon diodes.) But in the reverse direction recall that as the diode is reverse biased, a small amount of current will flow (because of minority carriers). This "trickle" of current will continue until the "zener voltage" is reached, and then the diode will begin to conduct heavily. On the graph, this is the zener region. Zener diodes can be made to breakdown at a specific voltage, and their ability to conduct reverse current can be increased by manufacturing a larger diode. That means there are a range of voltages and wattages of zener diodes available. Wikipedia has more information and that graph. Use the link provided to get there.
Zener diodes are most commonly used in?
Zener diodes are a form of semiconductor diode that are widely used in electronics circuits as voltage references. Zener diodes provide a stable and defined voltage and as a result Zener diode circuits are often used in power supplies when regulated outputs are needed. Zener diodes are cheap and they are also easy to use and as a result they are used in many applications and many circuits.
What is the symbol of a diode?
The letter used is called a Reference Designation, and for a diode sometimes depends on what kind of diode it is. Most diodes use the letter D, as in D1, D2, D3. Zener diodes usually use the letter Z or much more rarely ZR or ZD (Zener Rectifier or Zener Diode). CR is an archaic designation that stands for Crystal Rectifier. LEDs may use LED1, LED2, etc. or just D1, D2, etc. A bridge rectifier (four diodes connected so AC fed into two leads results in pulsating DC from two other leads) uses BR for obvious reasons. AE7HD The letter symbol for the diode is D.
What is the function of a zener diode in a dc power supply?
zener diode use as power regulator and it removes the small pics generated while the time of conversion by rectifies supply from AC to Dc...it is compulary to fixed a zener diode with rectifiier circuit for the protection of electronics devices....we all know that all electronics eqiupments arework on DC... on more think zener diode available in the series of 74XX ..i hope u satisfied.. ANSWER: It uses its own controlled breakdown voltage as a regulator since the voltage remains the same while current may go up or down caused by the varying input
Can you use a capacitor instead of zener diode in biased clipping circuit?
No. The purpose of the zener diode is to clip (turn on) at a certain voltage. A capacitor will not exhibit this behavior.
Which type of diode used in bridge rectifier?
You can use most diodes for that purpose, and particularly silicon diodes. However, you should not use zener diodes and similar for rectification purposes. Otherwise, you will likely not get the intended result. If the voltage exceeds the avalanche voltage, then the zener diode will no longer rectify, but conduct the other way as well.
What is use of the diode?
The use of the pn diode is for rectification. It can also be used as a switch.
The use of p-n junction diode as a bridge rectifier?
The process of conversion of AC into DC is known as rectification device used for this purpose is called as rectifier.A PN diode conducts well when it is forward biased and does not conduct Negligible current when it is reverse biased.This unidirectional nature of diode is used for the purpose of rectification.
Where from to get ratings and specifications of zener diode?
There are thousands of different zener diode types...use the internet to locate a data sheet for a particular type.
Does zener diode works after breakdown voltage?
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.
Discussion of zener diode a voltage regulation?
A zener diode has a relatively flat voltage to current curve when reverse biased. Within limits, you can consider that the voltage across the zener diode is constant. You can use the zener as the primary regulator, so long as you consider the power requirements and dissipation of both the zener and the load, and you do not overload the zener. More often, the zener is used as a voltage reference in a larger power supply that uses other components, linear or switched, to supply the load.
What diode people use before the invention of zener diode?
gas filled cold cathode glow discharge tubes.
What is Zener diode function?
Zener diodes are widely used as voltage references and as shunt regulators to regulate the voltage across small circuits. When connected in parallel with a variable voltage source so that it is reverse biased, aZener diode conducts when the voltage reaches the diode's reverse breakdown voltage.
What is the use of PN diode?
there are many uses. one major use i remember is in rectification i.e convert ac to dc For switch operation
What is the use of superdiode?
superdiode consist of diode and amplifier circuit.it is used for the rectification of small signals
What is the zener region?
The zener region describes the area on the performance curve (a graph of voltage across versus current through the junction) of a zener diode. The diode acts like a "regular" diode in the forward biased direction. When some 0.7 volts or so is reached, forward current begins to climb rapidly as voltage is increased (for silicon diodes.) But in the reverse direction recall that as the diode is reverse biased, a small amount of current will flow (because of minority carriers). This "trickle" of current will continue until the "zener voltage" is reached, and then the diode will begin to conduct heavily. On the graph, this is the zener region. Zener diodes can be made to breakdown at a specific voltage, and their ability to conduct reverse current can be increased by manufacturing a larger diode. That means there are a range of voltages and wattages of zener diodes available. Wikipedia has more information and that graph. Use the link provided to get there.
