Line And Load Regulation Of Zener Diode

Line and Load Regulation using Zener diode AimObjective. Voltmeter is placed parallel to load resistor and ammeter series with the series resistor.

What Is Line Regulation And Load Regulation In A Zener Diode Why Do We Measure Them What Do We Achieve Through This Quora

Line regulation depends on the small dynamic resistance rz Ideal value 0 but practically non zero of the zener element.

Line and load regulation of zener diode. Though Zener diodes are used as voltage regulators they have a low efficiency for heavy load currents. Fix the load resistance value by using Load Resistance slider. In the case of Zener diodes the Zener voltage gives it the capability of voltage regulation.

Make the connections as shown in figure below. Set Zener voltage V Z to 51 V. Line regulation defines as the output voltage of the zener to remain constant under input line variation.

Now since the Zener diode in a shunt regulator has some. Choose Load Resistance in such a. Set DC voltage to 6 volt.

Choose the zener diode to start the experiment. Zener diode as voltage regulator. Lower that value better is the load regulation.

O L L v i R Note that since the load ie regulator voltage v O is a constant approximately specifying i L is equivalent to specifying R L and vice versa. 3 Ammeter 0 10 A 2 No. The purpose of a voltage regulator is to maintain a constant load voltage irrespective of varying load current and supply voltages.

Note down output voltage as a load voltage with high line voltage VHL and as a load voltage with low line voltage VLL. Vary the Load Resistance R L. Name of the apparatus Range Type Quantity 1 Zener diode - 1 No.

It is because if the load current is large there will be considerable power loss in the series limiting resistance Rs. 5 Resistor 330 Ω 1 No. A voltage regulator is an electronic circuit that provides a stable DC voltage independent of the load current temperature and AC line voltage variations.

To check dependency of voltage change in the Zener diode. Set the Series Resistance R S to 100 Ω. In other words if the source voltage V S increases decreases the load voltage V O will likewise increase decrease by some very small amount.

So for changes in line input voltage the output voltage can vary by -144mV and for changes in line load output voltage can vary by -900mV. MboxLoad regulation fracDelta V_outDelta I_out We would like a small value for this specification. 2 RPS 0 30 V 1 No.

Load regulation depends on the output resistance of the regulator. Smaller this value better is the line regulation. Line Regulation Since the Zener diode in a shunt regulator has some small but non-zero dynamic resistance r Z we find that the load voltage V O will have a small dependence on source voltage V S.

Line regulation refers to the amount the voltage varies at the output due to variations in the input voltage line. There are several ways of finding out this relation but the most systematic one that can be applied the same way to all circuits is the small-signal analysis. Vary DC input voltage from 5V to 15V.

Insert the series resistance value. 4 Voltmeter 0 30 V 2 No. Load regulations defined as the load increases or decreases the zener will control this.

When the power dissipated on Rs exceeds its power rating this will eventually damage the resistor. Note down the corresponding input voltage and output voltage and tabulate it. The voltage drop of a zener diode does vary a bit with current changes so both line voltage and load current cause small changes in output voltage.

Plot the graph in which V IN at x-axis V L at y-axis. So the actual output voltage will be in the range of 1097V to 1304V. Keep load resistance fixed value.

Load Regulation Z For voltage regulators we typically define a load R L in terms of its current i L where. Change the Rheostat value from maximum to 0 by the interval 100. A Zener diode of break down voltage V_Z is reverse connected to an input voltage source V_I across a load resistance.

6 Resistor 1 kΩ 1. Load regulation refers to the change in output in response to load current changes. Load regulation measures how much it is affected.

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What Is Line Regulation And Load Regulation In A Zener Diode Why Do We Measure Them What Do We Achieve Through This Quora