It has a very sharp reverse breakdown voltage curve and is not damaged by the reverse current, as some normal diodes might be.
The zener diode behaves as a voltage regulator because, in the reverse bias condition, it has a relatively flat voltage to current curve. That means that the voltage across the diode will be relatively constant even if the current through it varies slightly. In order to achieve stable operation, you should operate in the normal "expected" current range. You get that from the specifications.
A: Once a zener breakdown in the reverse direction the voltage across remains the same. As input voltage increases or decrease the voltage remain the same. Therefore this property can be exploited to ascertain that a particular circuit will have to this to work with
A zener diode has a relatively steep voltage to current curve in the reverse bias mode at its reverse bias breakdown voltage. By placing a resistor in series with the zener diode, with both of them across a relatively stable voltage source, at the nominal bias current, typically 75 ma depending on the diode, you get a very stable voltage reference. You can use this directly, so long as you consider current, voltage, and power over the range of expected load, or you can follow that up with a class c emitter follower, or even an op-amp regulated emitter follower. It all depends on your power requirements.
A zener diode is a special kind of diode, which permits current to flow in the forward direction as normal, but it will also allow current to flow in the reverse direction when the voltage is above a certain value. This break over vlotage is the zener voltage which the diode is named after. See Related Links below.
zener diode has sharp reverse voltage so when it is connected parallel in reverse bais condition with supply voltage it holds contant voltage at large variation in supply.
application of zener diode as reference element
legal an specfic zener diode.
Same as above
unregulated voltage minus series regulator transistor drop.
Monolithic circuit
A voltage error circuit is called an error amplifier and happens when there are discrepancies between the voltage output and the reference voltage. A current error circuit happens when there is a disruption of flow in an ammeter.
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.
In a DC circuit, one alternate to the rheostat for controlling battery voltage is a voltage regulator. You could build a linear regulator, but you need to consider the power that might be dissipated - this would be the same amount of power dissipated by the rheostat. You could also build a switching regulator - this would be more complex, but it could be more efficient because the dissipation across the regulator would be less.
A mercury battery will provide constant voltage. A voltage regulator circuit will also.
unregulated voltage minus series regulator transistor drop.
To protect voltage sensitive components of an electrical circuit.
Monolithic circuit
A voltage regulator is a circuit or device designed to deliver a constant voltage at its output regardless of changes in load current.A voltage stabilizer is a circuit or device designed to deliver a constant voltage at its output regardless of changes in incoming voltage.
A voltage regulator controls the output voltage of a generator. This ensures only the specified ÊvoltageÊis supplied thus preventing damage to the circuit and other electrical appliances.Ê
A voltage error circuit is called an error amplifier and happens when there are discrepancies between the voltage output and the reference voltage. A current error circuit happens when there is a disruption of flow in an ammeter.
You reduce voltage in a DC circuit with a resistor. If the power demands are high, however, you may need a switching voltage regulator.
No. A potentiometer is a variable resistor that allows you to set a voltage ratio or to adjust a resistance in a circuit. A voltage regulator, on the other hand, is a device that responds to changes in load, making automatic correction of output voltage. If you increase the load on a potentiometer, the output voltage will change, but not so (within limits) for a voltage regulator. However, you can use a potentiometer in a voltage regulator to make the output adjustable.
Overcharging (bad voltage regulator) or a short circuit inside the battery.
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.
In a DC circuit, one alternate to the rheostat for controlling battery voltage is a voltage regulator. You could build a linear regulator, but you need to consider the power that might be dissipated - this would be the same amount of power dissipated by the rheostat. You could also build a switching regulator - this would be more complex, but it could be more efficient because the dissipation across the regulator would be less.