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A: A zener diode is manufacture to reverse breakdown at a certain voltage this voltage will remain almost constant no matter how much more voltage is available [within operating parameters]. this zener must be able to sustain both itself operating currents plus the load
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoZener diodes try to keep their terminal voltage at their designed voltage, that is their function. Putting a zener diode in parallel with a load can help regulate the voltage to the desired amount, if the load is fairly small (you are using very little current). Exact values would need to be calculated - i'd recommend using a simulation program like PSPICE (free student version - search the web) to get an idea. If more power is needed, a simple power supply design would need to be used - a zener diode can be used to the gate of a power transistor to force the gate voltage to stay the relatively constant. Wire the collector of a NPN type to your rectified source, and the emitter is your positive output. The zener diode will keep the gate voltage relatively unchanged, keeping the emitter voltage relatively constant. A fairly large capacitance on the output of your rectifier circuit will help remove a lot of the ripple; the transistor + zener will clean it up further.
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Is it pn junction diode used as voltage regulator?
zener diode
Can zener diode be used as fan regulaters?
A: NOT VERY WELL a zener requires to support booths its breakdown current and the fan current essentially the zener is a voltage regulator not a current regulator
What is V-I characteristics of zener diode?
Work in reverse bias.(breakdown at a particular voltage to keep the volt. constant so used as voltage regulator) same as diode when forward biased.
When current through a zener diode increases by a factor of 2 by what factor does the voltage across the zener diode increase?
If the zener diode is in zener breakdown the voltage across the zener diode remains constant regardless of current (for the ideal zener diode). Real zener diodes have parasitic resistance that causes the voltage across the zener diode to increase slightly with increased current, but due to temperature dependant variations in this parasitic resistance as well as temperature dependant variations in the zener breakdown voltage, this change in voltage in real zener diodes cannot be described by a simple linear factor.
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.
Is it pn junction diode used as voltage regulator?
zener diode
Can zener diode be used as fan regulaters?
A: NOT VERY WELL a zener requires to support booths its breakdown current and the fan current essentially the zener is a voltage regulator not a current regulator
What is V-I characteristics of zener diode?
Work in reverse bias.(breakdown at a particular voltage to keep the volt. constant so used as voltage regulator) same as diode when forward biased.
When current through a zener diode increases by a factor of 2 by what factor does the voltage across the zener diode increase?
If the zener diode is in zener breakdown the voltage across the zener diode remains constant regardless of current (for the ideal zener diode). Real zener diodes have parasitic resistance that causes the voltage across the zener diode to increase slightly with increased current, but due to temperature dependant variations in this parasitic resistance as well as temperature dependant variations in the zener breakdown voltage, this change in voltage in real zener diodes cannot be described by a simple linear factor.
What is the zener point?
A diode (some people incorrectly call them rectifiers) is a semiconductor device that allows a current to flow in one direction. A Zener diode allows a reverse to current to flow at a defined voltage. A common application for them is as a voltage regulator. Named for C M Zener , US Physicist. A zener diode is a diode and like all diodes it will conduct in both directions. If a reversed voltage is applied it will breakdown and conduct current. Most diodes when they breakdown the reversed voltage cannot be predictable. However a zener diode when they do breakdown in the reverse voltage mode that voltage can be made as predictable and remain +/- % of the breakdown voltage. Therefore this steady voltage can be used as a regulator for instance or a definite voltage drop if need be.
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 special property of a zener diode?
in the negative biasing it gives the constant voltage irrespective of limited current.......the voltage it provides in the negative biasing is known as 'zener voltage' due to this property zener voltage is used as voltage regulator........voltage regulator is a circuit which gives constant output even the input is changing.
Can zener diode used as rectifier?
Yes **************************************** 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.
What is the function of zener?
zener diode is a revers bias diode which used 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 is the purpose of the zener diode in a power supply?
to limit the voltage or regulate the same.
What is the special properties of a diode?
in the negative biasing it gives the constant voltage irrespective of limited current.......the voltage it provides in the negative biasing is known as 'zener voltage' due to this property zener voltage is used as voltage regulator........voltage regulator is a circuit which gives constant output even the input is changing.
