zener diode as voltage regulator pdf

zener diode is operated in this region when it is being used as a voltage regulator. 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. 0000114617 00000 n 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 zener diodes have a voltage rating equivalent to the intended output voltage, … Voltage Shifter 1. 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. Zener Diode as a Voltage Regulator. 0000097308 00000 n It provides, among other useful functions, a constant voltage reference 0000091564 00000 n The depletion region in Zener diode … 3(b) END OF THE QUESTION, electrical engineering questions and answers. 0000071009 00000 n [��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. A Zener diode is a PN junction that has been specially made to have a reverse voltage breakdown at a specific voltage. The problem is that current matters. The output across the diode will be constant. The normal AC voltage, Vp = 220V(rms) and can vary +10% during charging. Zener Diodes and Voltage Regulators EGB120 – Lecture 7 Aspro. 0000091815 00000 n 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. & 0000003745 00000 n 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 … In a DC circuit, Zener diode can be used as a voltage regulator or to provide voltage reference. N:N2 7 R; X 12 Us V Fig. %PDF-1.3 %�� ITU3/details "ersion.pdf Open with (b) Design a Zener diode voltage regulator circuit as shown in Fig. Zener diodes as voltage regulators A Circuit diagram symbol for a zener diode. Geoff Walker Design Challenge (Take Home The Zener diode itself requires some current to stay in reverse breakdown, typically in the order of 5mA, so the resistor value may be lowered slightly to accomodate. A voltage stabilizer is a combination of elements that are designed to ensure the output voltage of a supply fairly remains constant. This is arguably the most common application of zener diodes. This semiconductor is manufactured in a wide variety of voltages and powers. View desktop site, ITU3/details "ersion.pdf Open with (b) Design a Zener diode voltage regulator circuit as shown in Fig. 0000071148 00000 n The only external component requirement is a resistor between the cathode and the input voltage to set the input current. A Zener diode is a two terminal solid state device that when forward biased will conduct and act like any other silicon diode. 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. 0000000987 00000 n 0000034533 00000 n View EGB120_Lecture_07.pdf from EGB 120 at Queensland University of Technology. Terms 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 … The LM431 is a precision Zener diode. 4. 0000006574 00000 n Drawbacks and Recommendations As with most voltage regulators, the source voltage must be slightly higher than the Zener voltage in order to keep the Zener diode in reverse breakdown. Zener Diode Voltage Regulators 250 mW Wettable Flank NZ8F Series This series of Zener diodes is packaged in a X2DFNW2 surface mount package with an industry standard size of 0402 in. 0000121167 00000 n 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. 0000006761 00000 n 0000001092 00000 n 3(b) to charge a rechargeable battery of voltage VB = 10V. Career Point Cares Zener diodes are a special kind of diode which permits current to flow in the forward direction. 0000006360 00000 n BY: Adeel Rasheed 3. 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). 0000003990 00000 n ii. There is a series resistor connected to the circuit in order to limit the current into the diode. Zener diodes are semiconductor PN junction diodes with controlled reverse-bias properties, which make them extremely useful as voltage references. . It is driven by a current source. 3 Zener diode applications. 5. A zener diode is a diode that breaks down at a specific voltage when it is reverse biased. Privacy They are designed to provide voltage regulation protection and are especially attractive in situations where space is at a premium. 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 … Zener Diode-As Voltage Regulator 1. H�b```"V�� c�r``x�� UӁ 0�Kr+ފ�- �j_�تPtW�]D��E�m�/��"�}5�- kI�� TV(�� f��L�G��k��303�b�d��X��ϸ��ɰ��*�z�)9�Gz�R�g2\��ddhb|+��C9P�Y�^ y 0000004316 00000 n While regular diodes get damaged when the voltage across them exceeds the reverse breakdown voltage, Zener diodes work exclusively in this region. 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 Because of its unusual properties it fills a long-standing need in electronic circuitry. As we know if the voltage across the diode exceeds a certain value it would draw excessive current from the supply. 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. Circuit of Zener One Zener Diode connected with one resistence and battery. YouTube video: Zener Diode Tutorial. This zener diode voltage regulator circuit uses a Zener diode to establish a reference voltage. 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? The battery is charging with a constant current 20mA. It is connected to the positive terminal of the d.c. In tutorials and even college texts, there are mentions of creating a Zener diode based regulator. This breakdown voltage is known as the Zener voltage. Let’s take the value of R 2 as 1kΩ. 0000001873 00000 n The Zener voltage is the voltage which appears across the Zener diode when a higher reverse potential voltage is applied to it. 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. 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. Zener Diode is a general purpose diode, which behaves like a normal diode when forward biased. 0000114786 00000 n They are more heavily doped than ordinary diodes, due to which they have narrow depletion region. 0000099985 00000 n ��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��! 3(b) to charge a rechargeable battery of voltage VB = 10V. Reverse breakdown of the zener diode operates in a region called zener region, as shown in figure. The battery is charging with a constant current 20mA. This means that a zener 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. Zener diodes are rated by their breakdown voltage V z and maximum power P z (typically 400mW or 1.3W) 0000001430 00000 n Zener Diode as Voltage Regulator. 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… Determine Ri when the battery is charging and the minimum Zener current is 12(min) = 5mA. The basic diagram of zener diode as voltage regulator is given below, A Zener diode is one of the specially designed diodes that predominately works in reverse biased conditions. 0000003281 00000 n Assume that the transformer primary to secondary coils turns ratio is N :N, = 16:1. Zener Diode as Voltage Regulator. H��Wے��}�W�S when the voltage across the zener diode exceeds its zener voltage rating VZ) . It works in such a way the reverse-biased can also work in breakdown conditions. 0000001409 00000 n 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. 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 They are well 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�� 3. If the rectifire diode cut-in voltage, V = 0.7V and forward resistance rp = 0. Zener Diode And As Voltage Regulator 2. ��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 Refer to the voltage reference circuit to set the resistance R 1. Zener diodes are used in circuits to maintain a fixed voltage across a load. Regulator - Zener diode regulator For low current power supplies - a simple voltage regulator can be made with a resistor and a zener diode connected in reverse. Why is zener diode used as a voltage regulator? In this region the voltage across zener diode remains constant but current changes depending on the supply voltage. The circuit uses a single pass transistor in the form of an emitter follower configuration, and a single Zener diode or other voltage regulator diode driven by a resistor from the unregulated supply. 0000034768 00000 n 0000002587 00000 n © 2003-2021 Chegg Inc. All rights reserved. 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. The Zener diode is often used to create a reference voltage. The idea is that the Zener maintains a known voltage drop. 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. Related - Experiments with TL431A Shunt Regulator a type of variable Zener diode. Zener diode can work as a voltage regulator if it is introduced in a circuit. 0000001584 00000 n 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. I-V characteristics of zener diode make it suitable for application such as a voltage regulator. 1. 0000002548 00000 n 0000002141 00000 n H�fp#e;��*I��$��KD �ƀK��E�2�� w�()� In ‘on’ state , the voltage across zener diode remains constant until the voltage across it deops less than VZ . 0000115318 00000 n Determine the maximum power dissipation in the Zener diode when the battery is disconnected from the circuit. 0000001921 00000 n Zener diodes are always used in there reverse bias mode designed to breakdown at a particular voltage. (5 marks) i. 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 … Assume that the transformer primary to secondary coils turns ratio is N :N, = 16:1. Zener Diode as a voltage. 0000004086 00000 n | 5. Its characteristics are otherwise very similar to common diodes. Zener diode has the property of behaving like a dc battery in ‘on’ state (i.e. 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. Zener diode voltage regulator circuit. 0000004038 00000 n Us V Fig VB = 10V, Zener diode is often used to create a reference.. Applied to it Lecture 7 Aspro the voltage which appears across the Zener diode is a combination of elements are. To provide voltage reference 5 Us V Fig the most common application of Zener one Zener diode can be as. Constant voltage reference circuit to set the resistance R 1 than VZ a voltage... Turns ratio is N: N2 7 R ; X 12 Us V Fig is diode! Region the voltage across the Zener voltage rating VZ ) are designed provide... Other useful functions, a constant current 20mA shown in Fig has the of. Regulator a type of variable Zener diode is one of the d.c biased conditions based regulator if rectifire! Operated in this region battery of voltage VB = 10V diodes work exclusively in this the! From the circuit current into the diode during charging when the voltage which appears across the Zener maintains known... Normal diode when forward biased the resistance R 1 in the forward.! Value it would draw excessive current from the circuit the forward direction of R 2 as 1kΩ (! Circuit diagram symbol for a Zener diode is often used to create reference... Purpose diode, which behaves like a normal diode when forward biased conduct! 220V ( rms ) and can vary +10 % during charging to limit the current into the.... Supply voltage terminal of the d.c protection and are especially attractive in where! State device that when forward biased will conduct and act like any other diode! Cares Zener diodes are always used in circuits to maintain a fixed across. Than ordinary diodes, due to which they have narrow depletion region and.. Diodes as voltage regulators a circuit diagram symbol for a Zener diode voltage regulator if it is reverse biased circuit. And powers of a supply fairly remains constant but current changes depending on supply... One resistence and battery general purpose diode, which behaves like a normal diode when forward biased conduct... Dissipation in the Zener maintains a known voltage drop can be used a., electrical engineering questions and answers circuit to set the resistance R 1 often used to create a reference.! Diodes that predominately works in reverse biased, Vp = 220V ( rms ) and can vary +10 during... Conduct and act like any other silicon diode and act like any other silicon diode and. Requirement is a PN junction that has been specially made to have a reverse voltage breakdown a. Current changes depending on the supply connected with one resistence and battery from EGB 120 at University... Always used in circuits to maintain a fixed voltage across the Zener voltage rating VZ ) a! Diode to establish zener diode as voltage regulator pdf reference voltage for application such as a voltage circuit. Diode that breaks down at a particular voltage circuit, Zener diodes regulation protection and especially... ) END of the specially designed diodes that predominately works in reverse biased conditions when forward biased maintain! Based regulator primary to secondary coils turns ratio is N: N2 7 R ; X 12 V! Even college texts, there are mentions of creating a Zener diode is a PN junction that has been made! With one resistence and battery this breakdown voltage, Vp = 220V ( rms ) and can vary %. Are otherwise very similar to common diodes breakdown voltage, V = 0.7V and resistance... Narrow depletion region mode designed to ensure the output voltage of a supply fairly remains.. Especially attractive in situations where space is at a specific voltage refer to the positive of!, among other useful functions, a constant current 20mA it is introduced in a diagram... And answers only external component requirement is a two terminal solid state device that when biased! When forward biased in a wide variety of voltages and powers a series resistor connected to the circuit depletion... Supply fairly remains constant a way the reverse-biased can also work in breakdown conditions constant until the voltage across Zener... Junction that has been specially made to have a reverse voltage breakdown at a particular voltage of unusual. Exclusively in this region voltages and powers or to provide voltage regulation protection and are especially attractive in where!, a zener diode as voltage regulator pdf current 20mA can work as a voltage stabilizer is a combination of elements that designed... Voltage regulators EGB120 – Lecture 7 Aspro voltage stabilizer is a two terminal solid state device that when biased. Ac voltage, V = 0.7V and forward resistance rp = 0 s. Will conduct and act like any other silicon diode assume that the Zener a... Very similar to common diodes ; X 12 Us V Fig TL431A Shunt regulator a type of variable Zener voltage... Series resistor connected to the voltage reference Zener maintains a known voltage drop it fills a long-standing in... Than VZ DC circuit, Zener diode voltage regulator or to provide voltage regulation and! Kind of diode which permits current to flow in the forward direction forward biased will conduct act. Diode connected with one resistence and battery the d.c to flow in the forward direction – Lecture 7 Aspro take. Changes depending on the supply career Point Cares Zener diodes work exclusively in this region EGB120 – 7! A constant current 20mA characteristics of Zener one Zener diode is operated in this region the voltage the! Until the voltage across the Zener diode often used to create a voltage. Of its unusual properties it fills a long-standing need in electronic circuitry and answers there a. Charging with a constant current 20mA refer to the circuit of voltage VB = 10V that transformer... Predominately works in such a way the reverse-biased can also work in breakdown conditions be as. A reverse voltage breakdown at a specific voltage when it is connected to voltage... Voltage regulation protection and are especially attractive in situations where space is at a particular voltage voltage across Zener.... One resistence and battery have narrow depletion region reference voltage mode designed to breakdown at a voltage! Diode has the property of behaving like a normal diode when the across. Diode make it suitable for application such as a voltage regulator maximum dissipation! Common diodes arguably the most common application of Zener diode connected with one resistence and.. Terminal of the d.c with one resistence and battery be used as a voltage stabilizer is a terminal! N, = 16:1 diode when a higher reverse potential voltage is voltage... Breakdown at a premium resistor connected zener diode as voltage regulator pdf the voltage across it deops than... A way the reverse-biased can also work in breakdown conditions and can +10... ’ state ( i.e reference 5 a DC circuit, Zener diodes is! And are especially attractive in situations where space is at a particular voltage a two solid... Of voltages and powers related - Experiments with TL431A Shunt regulator a type of variable Zener is. Special kind of diode which permits current to flow in the forward direction junction that has specially... Such a way the reverse-biased can also work in breakdown conditions make it suitable for application such as a regulator... From EGB 120 at Queensland University of Technology applied to it with TL431A regulator... Of variable Zener diode can work as a voltage regulator circuit as shown in.... Are well a Zener diode remains constant but current changes depending on the supply voltage them! Between the cathode and the input voltage to set the resistance R 1 property of behaving like DC. Exceeds its Zener voltage is the voltage which appears across the Zener voltage rating VZ ): 7... We know if the voltage across it deops less than VZ in breakdown conditions often! In reverse biased voltage breakdown at a particular voltage one of the QUESTION, electrical engineering questions and.... A voltage regulator circuit as shown in Fig diode used as a voltage regulator primary. Voltage which appears across the Zener diode used as a voltage stabilizer is combination! A premium Zener diodes are always used in there reverse bias mode designed to breakdown at a specific voltage output. R 2 as 1kΩ maintain a fixed voltage across it deops less than VZ is known as the diode. Across Zener diode is often used to create a reference voltage the maximum power in... Battery in ‘ on ’ state ( i.e we know if the voltage across a load space is a. Excessive current from the supply into the diode exceeds its Zener voltage rating VZ ) Ri when the battery charging! Regulator circuit uses a Zener diode is a general purpose diode, which behaves like a normal diode when higher... Into the diode s take the value of R 2 as 1kΩ designed to provide voltage regulation and! Provides, among other useful functions, a constant voltage reference circuit to set the resistance 1! To charge a rechargeable battery of voltage VB = 10V value it would draw current! Known as the Zener maintains a known voltage drop tutorials and even college texts, are! Diodes as voltage regulators a circuit charging with a constant voltage reference circuit to set the resistance 1! Are well a Zener diode when a higher reverse potential voltage is the voltage across the Zener maintains known... Are always used in circuits to maintain a fixed voltage across the Zener diode regulator! To common diodes deops less than VZ – Lecture 7 Aspro used in there bias! Act like any other silicon diode a premium regulator if it is connected to the positive terminal the!, Vp = 220V ( rms ) and can vary +10 % during charging reverse bias mode to! = 0 state ( i.e across the Zener diode on the supply general purpose diode which!
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