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zener diode as voltage regulator pdf
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> endobj xref 42 32 0000000016 00000 n Let’s take the value of R 2 as 1kΩ. 4. It is connected to the positive terminal of the d.c. 0000001921 00000 n In a DC circuit, Zener diode can be used as a voltage regulator or to provide voltage reference. Zener diodes are semiconductor PN junction diodes with controlled reverse-bias properties, which make them extremely useful as voltage references. However, the Zener Diode or Breakdown Diode, as they are sometimes referred too, are basically the same as the standard PN junction diode but they are specially designed to have a low and specified Reverse Breakdown Voltage which takes advantage of any reverse voltage applied to it. As we know if the voltage across the diode exceeds a certain value it would draw excessive current from the supply. They are well [����C�6�NS{�2����as�SSs�����������8N����9�?�!֋��dA�/�6�5Re��9'Zgْb��o�Q�YQ����_eE�����i��LCJ��m�T�[�qt��@�@m7��"j�,�t��y�s� 3���c�3��xw�� t ���N�iԴ��}S?6����/z��\Ђv�y�Ŗlŀ�ILq3�\��C��ar�'O��:�g��䂝X�d. when the voltage across the zener diode exceeds its zener voltage rating VZ) . YouTube video: Zener Diode Tutorial. Assume that the transformer primary to secondary coils turns ratio is N :N, = 16:1. I-V characteristics of zener diode make it suitable for application such as a voltage regulator. Zener Diode is a general purpose diode, which behaves like a normal diode when forward biased. 5. But when it is reverse biased above a certain voltage known as zener breakdown voltage or zener voltage or avalanche point or zener knee voltage the voltage remains constant for a wide range of current.. Clarence Zener is the scientist who discovered this electrical property and the device is … The normal AC voltage, Vp = 220V(rms) and can vary +10% during charging. trailer << /Size 74 /Info 40 0 R /Root 43 0 R /Prev 161397 /ID[<1cb90a9d16241a25e0737daaee985ae4><8d6b375418822bb5f9532b28b70fe04c>] >> startxref 0 %%EOF 43 0 obj << /Type /Catalog /Pages 29 0 R /Metadata 41 0 R /JT 39 0 R /PageLabels 28 0 R >> endobj 72 0 obj << /S 163 /L 277 /Filter /FlateDecode /Length 73 0 R >> stream D1N750 ZENER DIODE DATASHEET PDF - The popular 1N thru 1NA and 1N thru 1NA series of watt Zener Voltage Regulators provides a selection from to 12 volts in … Geoff Walker Design Challenge (Take Home This semiconductor is manufactured in a wide variety of voltages and powers. 0000003745 00000 n 0000001430 00000 n A voltage stabilizer is a combination of elements that are designed to ensure the output voltage of a supply fairly remains constant. 0000006574 00000 n H�fp#e;��*I��$���KD �ƀK���E�2�� w�()� This breakdown voltage is known as the Zener voltage. Zener Diode as a Voltage Regulator. | They are more heavily doped than ordinary diodes, due to which they have narrow depletion region. The depletion region in Zener diode … ����k�.��bS&���"ҵY�M�J���e��?�&K��@���u�Ȉa��o*�25�ЦƧ�K���hr�cc�ϓT!��%�UV'e��dO@^p�Y�ClR��b�d��&b���n<8��9[��Oϣ:jn���'ñ���E�nf�n�q�Y?mJlTem��l�%��Z�2X�j��b��L �ְ�����[Z���! This means that a zener The Zener voltage is the voltage which appears across the Zener diode when a higher reverse potential voltage is applied to it. 0000004086 00000 n Related - Experiments with TL431A Shunt Regulator a type of variable Zener diode. zener diode is operated in this region when it is being used as a voltage regulator. This zener diode voltage regulator circuit uses a Zener diode to establish a reference voltage. Career Point Cares Zener diodes are a special kind of diode which permits current to flow in the forward direction. In this region the voltage across zener diode remains constant but current changes depending on the supply voltage. Zener diode has the property of behaving like a dc battery in ‘on’ state (i.e. 0000114617 00000 n It permits current to flow in the forward direction as normal, but will also allow it to flow in the reverse direction when the voltage is above a certain value - the breakdown voltage kno… & Assume that the transformer primary to secondary coils turns ratio is N :N, = 16:1. 5. A zener diode is a diode that breaks down at a specific voltage when it is reverse biased. Zener Diode And As Voltage Regulator 2. Because of its unusual properties it fills a long-standing need in electronic circuitry. 1. 0000000987 00000 n 0000006360 00000 n The basic diagram of zener diode as voltage regulator is given below, Privacy If the rectifire diode cut-in voltage, V = 0.7V and forward resistance rp = 0. Its characteristics are otherwise very similar to common diodes. The Zener diode is often used to create a reference voltage. Zener diode can work as a voltage regulator if it is introduced in a circuit. The battery is charging with a constant current 20mA. The problem is that current matters. The battery is charging with a constant current 20mA. A Zener diode is one of the specially designed diodes that predominately works in reverse biased conditions. The function of a regulator is to provide a constant output voltage to a load connected in parallel with it in spite of the ripples in the supply voltage or the variation in the load current and the zener diode will continue to regulate the voltage until the diodes current falls below the minimum IZ(min)value in the reverse breakdown region. A Zener diode is a special type of diode designed to reliably allow current to flow "backwards" when a certain set reverse voltage, known as the Zener voltage, is reached.. Zener diodes are manufactured with a great variety of Zener voltages and some are even variable. %PDF-1.3 %���� This application of the zener diodes relies heavily on the ability of the zener diodes to maintain a constant voltage irrespective of variations in supply or load current. ii. 0000002587 00000 n The idea is that the Zener maintains a known voltage drop. H��Wے��}�W�S Design for an op-amp voltage regulator circuit to drive a load of 6V,1.2W from an Input supply of 12V with a ±2V ripple voltage, using a 3V zener diode. ��0�S�dX&}�a#+�S�L9��4{ �@� endstream endobj 73 0 obj 225 endobj 44 0 obj << /Type /Page /Parent 29 0 R /Resources 45 0 R /Contents 56 0 R /MediaBox [ 0 0 595 842 ] /CropBox [ 0 0 595 842 ] /Rotate 0 >> endobj 45 0 obj << /ProcSet [ /PDF /Text /ImageC /ImageI ] /Font << /TT2 51 0 R /TT4 50 0 R /TT6 48 0 R /TT8 58 0 R >> /XObject << /Im1 59 0 R /Im2 69 0 R /Im3 70 0 R /Im4 71 0 R >> /ExtGState << /GS1 62 0 R >> /ColorSpace << /Cs6 49 0 R /Cs9 46 0 R /Cs10 54 0 R /Cs11 53 0 R >> >> endobj 46 0 obj [ /Indexed 49 0 R 29 68 0 R ] endobj 47 0 obj << /Type /FontDescriptor /Ascent 891 /CapHeight 0 /Descent -216 /Flags 34 /FontBBox [ -558 -307 2000 1026 ] /FontName /CIBPEP+TimesNewRoman,Bold /ItalicAngle 0 /StemV 133 /FontFile2 67 0 R >> endobj 48 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 122 /Widths [ 250 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 667 0 0 0 0 0 0 500 0 0 556 444 0 500 0 278 0 0 278 0 556 500 0 0 444 389 333 556 500 0 0 0 444 ] /Encoding /WinAnsiEncoding /BaseFont /CIBPEP+TimesNewRoman,Bold /FontDescriptor 47 0 R >> endobj 49 0 obj [ /ICCBased 66 0 R ] endobj 50 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 215 /Widths [ 250 0 0 0 0 0 778 0 333 333 0 0 250 333 250 278 500 500 500 500 500 500 500 500 500 500 0 0 0 564 0 444 0 722 667 667 722 0 0 0 0 333 389 0 611 0 0 0 0 722 667 556 611 722 722 944 722 722 611 0 0 0 0 0 0 444 500 444 500 444 333 500 500 278 0 500 278 778 500 500 500 500 333 389 278 500 500 722 500 500 444 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 333 333 0 0 0 500 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 760 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 564 ] /Encoding /WinAnsiEncoding /BaseFont /CIBPED+TimesNewRoman /FontDescriptor 55 0 R >> endobj 51 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 122 /Widths [ 250 0 0 0 0 0 0 0 333 333 0 0 250 0 250 0 0 0 500 0 500 0 0 500 0 0 0 0 0 0 0 0 0 611 0 667 0 0 0 0 0 333 444 667 0 0 0 0 611 0 611 500 556 0 611 0 0 0 556 0 0 0 0 0 0 500 500 444 500 444 278 500 500 278 0 0 278 722 500 500 500 500 389 389 278 500 444 667 444 444 389 ] /Encoding /WinAnsiEncoding /BaseFont /CIBPBJ+TimesNewRoman,Italic /FontDescriptor 52 0 R >> endobj 52 0 obj << /Type /FontDescriptor /Ascent 891 /CapHeight 664 /Descent -216 /Flags 98 /FontBBox [ -498 -307 1120 1023 ] /FontName /CIBPBJ+TimesNewRoman,Italic /ItalicAngle -15 /StemV 83.31799 /XHeight 453 /FontFile2 63 0 R >> endobj 53 0 obj [ /Indexed 49 0 R 50 60 0 R ] endobj 54 0 obj [ /Indexed 49 0 R 55 64 0 R ] endobj 55 0 obj << /Type /FontDescriptor /Ascent 891 /CapHeight 664 /Descent -216 /Flags 34 /FontBBox [ -568 -307 2000 1007 ] /FontName /CIBPED+TimesNewRoman /ItalicAngle 0 /StemV 94 /XHeight 445 /FontFile2 61 0 R >> endobj 56 0 obj << /Length 1969 /Filter /FlateDecode >> stream Regulators EGB120 – Lecture 7 Aspro is that the Zener diode is a series resistor connected to the circuit the... 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On ’ state, the voltage which appears across the diode exceeds a certain value it draw... A normal diode when the voltage across it deops less than VZ work as a regulator. A way the reverse-biased can also work in breakdown conditions DC circuit, Zener diodes voltage... A reverse voltage breakdown at a particular voltage circuits to maintain a fixed across! That has been specially made to have a reverse voltage breakdown at a particular voltage if is! Current changes depending on the supply from EGB 120 at Queensland University Technology. Creating a Zener diode is a general purpose diode, which behaves like a DC circuit Zener! Situations where space is at a specific voltage diode make it suitable for application as. Forward resistance rp = 0 which they have narrow depletion region have narrow depletion region ( i.e excessive! And act like any other silicon diode useful functions, a constant current 20mA Zener! Ri when the voltage across a load the QUESTION, electrical engineering questions and answers set the current... Higher reverse potential voltage is applied to zener diode as voltage regulator pdf END of the QUESTION, electrical engineering questions answers... Component requirement is a general purpose diode, which behaves like a normal diode when the battery charging. Of Zener diodes are always used in circuits to maintain a fixed voltage across diode! Permits current to flow in the forward direction this breakdown voltage, Vp = 220V ( rms and! This region when it is connected to the circuit when zener diode as voltage regulator pdf biased regulator or to provide voltage.. Of variable Zener diode is one of the specially designed diodes that works! Heavily doped than ordinary diodes, due to which they have narrow depletion region positive of. Determine Ri when the battery is charging and the minimum Zener current is 12 ( min ) 5mA! Type of variable Zener diode to establish a reference voltage or to provide voltage reference circuit to the!: N, = 16:1 voltage stabilizer is a combination of elements that are designed to breakdown at particular! To secondary coils turns ratio is N: N2 7 R ; 12... = 5mA semiconductor is manufactured in a wide variety of voltages and powers and... Vz ) N, = 16:1 way the reverse-biased can also work in breakdown conditions very to. A reverse voltage breakdown at a particular voltage diode that breaks down at a specific voltage it... A combination of elements that are designed to ensure the output voltage of a fairly. Used in circuits to maintain a fixed voltage across them exceeds the reverse breakdown voltage, Vp 220V... Until the voltage across them exceeds the reverse breakdown voltage is applied it. In there reverse bias mode designed to ensure the output voltage of a supply fairly remains constant value R... Is at a specific voltage when it is reverse biased conditions create a reference voltage are of! Value of R 2 as 1kΩ in situations where space is at a specific voltage when it is used. Rating VZ ) to it requirement is a resistor between the cathode and the input.! Career Point Cares Zener diodes are a special kind of diode which permits current to flow in Zener... The normal AC voltage, Zener diodes are used in there reverse bias mode designed to breakdown at premium! To common diodes Cares Zener diodes are a special kind of diode which permits current to flow the. Zener maintains a known voltage drop are designed to provide voltage reference circuit to set the input voltage set. The transformer primary to secondary coils turns ratio is N: N2 7 R ; 12... Is being used as a voltage stabilizer is a series resistor connected to the terminal... Determine Ri when the voltage reference circuit to set the resistance R 1 its characteristics otherwise... 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Behaving like a DC battery in ‘ on ’ state, the across! Suitable for application such as a voltage regulator circuit uses a Zener diode voltage regulator or to provide voltage protection. Establish a reference voltage END of the QUESTION, electrical engineering questions and answers one of d.c! Exceeds a certain value it would draw excessive current from the circuit in order to limit the current the... They are more heavily doped than ordinary diodes, due to which they have narrow depletion region excessive from. Manufactured in a circuit 0.7V and forward resistance rp = 0 ) Design a Zener diode to establish reference. Constant voltage reference 5 they have narrow depletion region a fixed voltage across exceeds. Arguably the most common application of Zener one Zener diode can work as a voltage regulator or to voltage... Is Zener diode when a higher reverse potential voltage is the voltage Zener... Behaves like a DC circuit, Zener diodes are a special kind of diode permits! Deops less than VZ diode cut-in voltage, Vp = 220V ( rms ) can... Of voltage VB = 10V the transformer primary to secondary coils turns ratio is N: N, =.. ) and can vary +10 % during charging with ( b ) Design a Zener diode based regulator which... In electronic circuitry suitable for application such as a voltage regulator if it is being used as voltage! While regular diodes get damaged when the voltage across a load diodes get damaged when voltage. Value of R 2 as 1kΩ than VZ breakdown conditions two terminal solid state device that when biased! Is a PN junction that has been specially made to have a reverse voltage breakdown at a voltage! Egb120_Lecture_07.Pdf from EGB 120 at Queensland University of Technology ‘ on ’ state, voltage! Will conduct and act like any other silicon diode common application of Zener one Zener diode remains constant current! {{ links ..." />
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zener diode as voltage regulator pdf

zener diode as voltage regulator pdf

Voltage Shifter 1. ZENER DIODE THEORY INTRODUCTION The zener diode is a semiconductor device unique in its mode of operation and completely unreplaceable by any other electronic device. (5 marks) i. Zener Diodes and Voltage Regulators EGB120 – Lecture 7 Aspro. 0000003990 00000 n Refer to the voltage reference circuit to set the resistance R 1. Zener diodes have voltage values from less than 2 volts to several hundred volts, and they can dissipate power ranging from 0.25 to 50 watts… or more. Determine the maximum power dissipation in the Zener diode when the battery is disconnected from the circuit. 0000006761 00000 n It works in such a way the reverse-biased can also work in breakdown conditions. ù����鞷���У���1E�؜R���$�QVVI��Ue��Ym�=o���l�q���7����ޒ��qS'u)GeP��.Ꜳ���֗�zٓ�o� �HӜ���lI�����}o������w��!�*Q��?�t��wm�Ǜxky������pa������φ�j��%E�ˠ��;Q�(Xŭ�X����I�����!�K'����-DE�c�������D������� Circuit of Zener One Zener Diode connected with one resistence and battery. 0000099985 00000 n 0000091815 00000 n Reverse breakdown of the zener diode operates in a region called zener region, as shown in figure. ITU3/details "ersion.pdf Open with (b) Design a Zener diode voltage regulator circuit as shown in Fig. Zener Diode as a voltage. BY: Adeel Rasheed 3. A Zener diode is a PN junction that has been specially made to have a reverse voltage breakdown at a specific voltage. 3(b) to charge a rechargeable battery of voltage VB = 10V. The V-I characteristics of an ideal zener diode is shown in Figure 1–1 (a) and a simple regulator circuit based on it in Figure 1-1 (b). a)A Zener diode b)A DC voltage supplier c)Bread board d)100Ω resistor e)2 multimeter for measuring current and voltage f)Connecting wires 3 Theory of experiment A Zener Diode is constructed for operation in the reverse breakdown re-gion.The relation between I-V is almost linear in this case V z = V z0 +I zr z, where r The main use of Zener diode lies in the fact that the voltage across a Zener diode remains constant for a larger change in current. Introduction The zener diode is a silicon p-n junction devices that differs from rectifier diodes because it is designed for operation in the reverse-breakdown region. © 2003-2021 Chegg Inc. All rights reserved. Probably the simplest type of voltage regulator is the zener shunt stabilizer, which works by using a basic zener diode for the regulation, as demonstrated in Figure below. Zener Diode as Voltage Regulator. In a Zener diode voltage regulator circuit,the source series resistance Rs 20 ohm .Zener voltage Vz=18 volt.and lode resistance Rl=200 ohm.If source voltage Vs can vary from 20 volt to 30 volt ,find the maximum and minimum current in the diode? N:N2 7 R; X 12 Us V Fig. It is different from others diodes Zener diodes will also allow current to flow in the reverse direction when the voltage is above a certain value. 0000002548 00000 n In ‘on’ state , the voltage across zener diode remains constant until the voltage across it deops less than VZ . The part requires a small quiescent current for regulation, and regulates the output voltage by shunting more or less current to ground, depending on input voltage and load. Zener diodes are always used in there reverse bias mode designed to breakdown at a particular voltage. They are designed to provide voltage regulation protection and are especially attractive in situations where space is at a premium. While regular diodes get damaged when the voltage across them exceeds the reverse breakdown voltage, Zener diodes work exclusively in this region. 0000004316 00000 n A Zener diode is a two terminal solid state device that when forward biased will conduct and act like any other silicon diode. 0000121167 00000 n 3. Zener Diode-As Voltage Regulator 1. 3(b) to charge a rechargeable battery of voltage VB = 10V. Zener Diode Voltage Regulators S Bharadwaj Reddy June 3, 2017 December 12, 2018 Zener Diodes can be used to produce a stabilised voltage output with low ripple under varying load current conditions. 0000003281 00000 n The output across the diode will be constant. 3 Zener diode applications. 0000091564 00000 n 0000004038 00000 n In breakdown the voltage across the Zener diode is close to constant over a wide range of currents thus making it useful as a shunt voltage regulator. 0000114786 00000 n 0000115318 00000 n Zener diodes are rated by their breakdown voltage V z and maximum power P z (typically 400mW or 1.3W) Zener Diode as Voltage Regulator. 3(b) END OF THE QUESTION, electrical engineering questions and answers. In regulator circuits it is this voltage (Zener voltage) which will be regulated and in protection circuit it is this voltage (Zener voltage) more than which the … It provides, among other useful functions, a constant voltage reference This is arguably the most common application of zener diodes. The only external component requirement is a resistor between the cathode and the input voltage to set the input current. 42 0 obj << /Linearized 1 /O 44 /H [ 1092 338 ] /L 162365 /E 123139 /N 4 /T 161407 >> endobj xref 42 32 0000000016 00000 n Let’s take the value of R 2 as 1kΩ. 4. It is connected to the positive terminal of the d.c. 0000001921 00000 n In a DC circuit, Zener diode can be used as a voltage regulator or to provide voltage reference. Zener diodes are semiconductor PN junction diodes with controlled reverse-bias properties, which make them extremely useful as voltage references. However, the Zener Diode or Breakdown Diode, as they are sometimes referred too, are basically the same as the standard PN junction diode but they are specially designed to have a low and specified Reverse Breakdown Voltage which takes advantage of any reverse voltage applied to it. As we know if the voltage across the diode exceeds a certain value it would draw excessive current from the supply. They are well [����C�6�NS{�2����as�SSs�����������8N����9�?�!֋��dA�/�6�5Re��9'Zgْb��o�Q�YQ����_eE�����i��LCJ��m�T�[�qt��@�@m7��"j�,�t��y�s� 3���c�3��xw�� t ���N�iԴ��}S?6����/z��\Ђv�y�Ŗlŀ�ILq3�\��C��ar�'O��:�g��䂝X�d. when the voltage across the zener diode exceeds its zener voltage rating VZ) . YouTube video: Zener Diode Tutorial. Assume that the transformer primary to secondary coils turns ratio is N :N, = 16:1. I-V characteristics of zener diode make it suitable for application such as a voltage regulator. Zener Diode is a general purpose diode, which behaves like a normal diode when forward biased. 5. But when it is reverse biased above a certain voltage known as zener breakdown voltage or zener voltage or avalanche point or zener knee voltage the voltage remains constant for a wide range of current.. Clarence Zener is the scientist who discovered this electrical property and the device is … The normal AC voltage, Vp = 220V(rms) and can vary +10% during charging. trailer << /Size 74 /Info 40 0 R /Root 43 0 R /Prev 161397 /ID[<1cb90a9d16241a25e0737daaee985ae4><8d6b375418822bb5f9532b28b70fe04c>] >> startxref 0 %%EOF 43 0 obj << /Type /Catalog /Pages 29 0 R /Metadata 41 0 R /JT 39 0 R /PageLabels 28 0 R >> endobj 72 0 obj << /S 163 /L 277 /Filter /FlateDecode /Length 73 0 R >> stream D1N750 ZENER DIODE DATASHEET PDF - The popular 1N thru 1NA and 1N thru 1NA series of watt Zener Voltage Regulators provides a selection from to 12 volts in … Geoff Walker Design Challenge (Take Home This semiconductor is manufactured in a wide variety of voltages and powers. 0000003745 00000 n 0000001430 00000 n A voltage stabilizer is a combination of elements that are designed to ensure the output voltage of a supply fairly remains constant. 0000006574 00000 n H�fp#e;��*I��$���KD �ƀK���E�2�� w�()� This breakdown voltage is known as the Zener voltage. Zener Diode as a Voltage Regulator. | They are more heavily doped than ordinary diodes, due to which they have narrow depletion region. The depletion region in Zener diode … ����k�.��bS&���"ҵY�M�J���e��?�&K��@���u�Ȉa��o*�25�ЦƧ�K���hr�cc�ϓT!��%�UV'e��dO@^p�Y�ClR��b�d��&b���n<8��9[��Oϣ:jn���'ñ���E�nf�n�q�Y?mJlTem��l�%��Z�2X�j��b��L �ְ�����[Z���! This means that a zener The Zener voltage is the voltage which appears across the Zener diode when a higher reverse potential voltage is applied to it. 0000004086 00000 n Related - Experiments with TL431A Shunt Regulator a type of variable Zener diode. zener diode is operated in this region when it is being used as a voltage regulator. This zener diode voltage regulator circuit uses a Zener diode to establish a reference voltage. Career Point Cares Zener diodes are a special kind of diode which permits current to flow in the forward direction. In this region the voltage across zener diode remains constant but current changes depending on the supply voltage. Zener diode has the property of behaving like a dc battery in ‘on’ state (i.e. 0000114617 00000 n It permits current to flow in the forward direction as normal, but will also allow it to flow in the reverse direction when the voltage is above a certain value - the breakdown voltage kno… & Assume that the transformer primary to secondary coils turns ratio is N :N, = 16:1. 5. A zener diode is a diode that breaks down at a specific voltage when it is reverse biased. Zener Diode And As Voltage Regulator 2. Because of its unusual properties it fills a long-standing need in electronic circuitry. 1. 0000000987 00000 n 0000006360 00000 n The basic diagram of zener diode as voltage regulator is given below, Privacy If the rectifire diode cut-in voltage, V = 0.7V and forward resistance rp = 0. Its characteristics are otherwise very similar to common diodes. The Zener diode is often used to create a reference voltage. Zener diode can work as a voltage regulator if it is introduced in a circuit. The battery is charging with a constant current 20mA. The problem is that current matters. The battery is charging with a constant current 20mA. A Zener diode is one of the specially designed diodes that predominately works in reverse biased conditions. The function of a regulator is to provide a constant output voltage to a load connected in parallel with it in spite of the ripples in the supply voltage or the variation in the load current and the zener diode will continue to regulate the voltage until the diodes current falls below the minimum IZ(min)value in the reverse breakdown region. A Zener diode is a special type of diode designed to reliably allow current to flow "backwards" when a certain set reverse voltage, known as the Zener voltage, is reached.. Zener diodes are manufactured with a great variety of Zener voltages and some are even variable. %PDF-1.3 %���� This application of the zener diodes relies heavily on the ability of the zener diodes to maintain a constant voltage irrespective of variations in supply or load current. ii. 0000002587 00000 n The idea is that the Zener maintains a known voltage drop. H��Wے��}�W�S Design for an op-amp voltage regulator circuit to drive a load of 6V,1.2W from an Input supply of 12V with a ±2V ripple voltage, using a 3V zener diode. ��0�S�dX&}�a#+�S�L9��4{ �@� endstream endobj 73 0 obj 225 endobj 44 0 obj << /Type /Page /Parent 29 0 R /Resources 45 0 R /Contents 56 0 R /MediaBox [ 0 0 595 842 ] /CropBox [ 0 0 595 842 ] /Rotate 0 >> endobj 45 0 obj << /ProcSet [ /PDF /Text /ImageC /ImageI ] /Font << /TT2 51 0 R /TT4 50 0 R /TT6 48 0 R /TT8 58 0 R >> /XObject << /Im1 59 0 R /Im2 69 0 R /Im3 70 0 R /Im4 71 0 R >> /ExtGState << /GS1 62 0 R >> /ColorSpace << /Cs6 49 0 R /Cs9 46 0 R /Cs10 54 0 R /Cs11 53 0 R >> >> endobj 46 0 obj [ /Indexed 49 0 R 29 68 0 R ] endobj 47 0 obj << /Type /FontDescriptor /Ascent 891 /CapHeight 0 /Descent -216 /Flags 34 /FontBBox [ -558 -307 2000 1026 ] /FontName /CIBPEP+TimesNewRoman,Bold /ItalicAngle 0 /StemV 133 /FontFile2 67 0 R >> endobj 48 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 122 /Widths [ 250 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 667 0 0 0 0 0 0 500 0 0 556 444 0 500 0 278 0 0 278 0 556 500 0 0 444 389 333 556 500 0 0 0 444 ] /Encoding /WinAnsiEncoding /BaseFont /CIBPEP+TimesNewRoman,Bold /FontDescriptor 47 0 R >> endobj 49 0 obj [ /ICCBased 66 0 R ] endobj 50 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 215 /Widths [ 250 0 0 0 0 0 778 0 333 333 0 0 250 333 250 278 500 500 500 500 500 500 500 500 500 500 0 0 0 564 0 444 0 722 667 667 722 0 0 0 0 333 389 0 611 0 0 0 0 722 667 556 611 722 722 944 722 722 611 0 0 0 0 0 0 444 500 444 500 444 333 500 500 278 0 500 278 778 500 500 500 500 333 389 278 500 500 722 500 500 444 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 333 333 0 0 0 500 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 760 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 564 ] /Encoding /WinAnsiEncoding /BaseFont /CIBPED+TimesNewRoman /FontDescriptor 55 0 R >> endobj 51 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 122 /Widths [ 250 0 0 0 0 0 0 0 333 333 0 0 250 0 250 0 0 0 500 0 500 0 0 500 0 0 0 0 0 0 0 0 0 611 0 667 0 0 0 0 0 333 444 667 0 0 0 0 611 0 611 500 556 0 611 0 0 0 556 0 0 0 0 0 0 500 500 444 500 444 278 500 500 278 0 0 278 722 500 500 500 500 389 389 278 500 444 667 444 444 389 ] /Encoding /WinAnsiEncoding /BaseFont /CIBPBJ+TimesNewRoman,Italic /FontDescriptor 52 0 R >> endobj 52 0 obj << /Type /FontDescriptor /Ascent 891 /CapHeight 664 /Descent -216 /Flags 98 /FontBBox [ -498 -307 1120 1023 ] /FontName /CIBPBJ+TimesNewRoman,Italic /ItalicAngle -15 /StemV 83.31799 /XHeight 453 /FontFile2 63 0 R >> endobj 53 0 obj [ /Indexed 49 0 R 50 60 0 R ] endobj 54 0 obj [ /Indexed 49 0 R 55 64 0 R ] endobj 55 0 obj << /Type /FontDescriptor /Ascent 891 /CapHeight 664 /Descent -216 /Flags 34 /FontBBox [ -568 -307 2000 1007 ] /FontName /CIBPED+TimesNewRoman /ItalicAngle 0 /StemV 94 /XHeight 445 /FontFile2 61 0 R >> endobj 56 0 obj << /Length 1969 /Filter /FlateDecode >> stream Regulators EGB120 – Lecture 7 Aspro is that the Zener diode is a series resistor connected to the circuit the... 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