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Introduction to 2n5320

Hey Fellas! Hope you are doing great. Today I am going to give you the details on Introduction to 2n5320. It is basically a Bipolar NPN (Negative Positive Negative) Transistor (BJT), which contains two layers of N-doped semiconductor and one layer of P-doped semiconductor. P, layer lies between two N layers. Here P represents the Base of the transistor and two N layers show emitter and collector respectively. This NPN transistor has a wide range of applications. It is mainly used for power amplification and switching purpose.You should also have a look at Introduction to BC547 which is also an NPN transistor. So, let's get started with Introduction to 2n5320:

Introduction to 2n5320

• 2n5320 is a bipolar Switching Silicon transistor, which is mostly used for amplification purpose.
• 2n5360 is an NPN transistor, where P doped layer exists between two N doped layers.
• In this transistor, collector supply voltage will be positive with respect to the emitter and is denoted by Vce.
• The transistor action is triggered by the free movement of electrons from its base. Actually, these electrons work like a bridge between emitter and collector.

• The voltage between collector and emitter is 75 Volt, while the voltage between base and collector is 100 Volt.
• Voltage between emitter and base is 6 V.
• Maximum DC collector current is 700 mV.
• I have shown the 2n5320 in both of its symbolical and actual form in below figure:

1. 2n5320 Pinout

2n5320 basically consists of three pins which are as follows:

• 1: Emitter
• 2: Base
• 3: Collector

Actual pinout of 2n5320 transistor is shown in the figure below:

• The small base current is used to control a large amount of current at emitter and collector.
• The control of base current on emitter and collector is basically the backbone of transistor amplifying properties.
• The transistor is considered as fully ON when a large amount of current flows through collector and emitter.
• 2n5320 is also known as a current operated device.

2. Circuit Diagram of 2n5320

• The Circuit Diagram of 2n5320 is shown in the figure given below:

• As it is NPN transistor so voltage is negative at the emitter side and positive at the base side. The base-emitter voltage can be described as Vbe.
• One thing you must take into consideration, the base voltage will always be positive with respect to the emitter.
• The current flowing through the emitter is a combination of base and collector current.
• When we divide collector current to the base current, we get the transistor current in this switching bipolar transistor and is denoted by beta ß. As it is a ratio between two current so it encompasses no units.
• The standard value of this beta is 200. The ratio between collector current and base current is actually used for amplification purpose. The value of beta ranges from 20 to 1000. We can see the value of beta from the datasheet of different manufacturers but it generally ranges between 50 to 200.
• The current gain of this transistor is defined as the ratio between collector current to the emitter current. It is represented as alpha. The value of alpha lies between 0.95 to the 0.99 and most of the cases it is considered as unity.

3. Pin Ratings of 2n5320

• The Pin ratings of 2n5320 bipolar transistor is given below.

 

• Here voltage is represented in voltage and current is denoted by ampere.
• It is a low-frequency device that has the current rating of 2A. The semiconductor used in this bipolar transistor is made up of silicon that’s why it is mostly called Switching Silicon Bipolar Transistor.

4. Mechanical Outline of 2n5320

• Mechanical Outline of 2n5320 is shown in the below figure:

• These mechanical outlines are of quite importance especially in professional projects.
• But if you working on some student engineering project then these are not for you.

5. Applications

2n5320 Bipolar Transistor has many applications in real life. Some of them are given below.

• It is used for amplification purpose.
• Used for many switching applications.
• It also works as a low frequency device.

So, that was all about 2n5320. I hope you will get something out of it. If you wanna ask something about this NPN transistor then ask in comments adn I will try my best to resolve your issues. Will meet you guys in the next tutorial. Have a good day !!! :)

Introduction to Transformer

Hey Fellas! I warmly welcome you to be here. Today I'm going to discuss the Introduction to Transformer. I'll unlock the complete details of its working principle, construction, types, and applications. It is widely used for the transformation of electrical energy. The inception of transformation has revolutionized the electrical field and made our life easy more than ever before. Because of its extensive advantages, it works as a core for electrical engineering. In today's tutorial, I have explained in detail all about Transformer but still if you got trouble anywhere, then you can ask in comments and I will try my best to resolve them. So, now let's get started with Introduction to Transformer:

1. Introduction to Transformer

• Transformer is a simple static device that helps in transferring the electrical power between two circuits.
• Transformer works on the Faraday’s Law of Electromagnetic Induction.

Faraday’s Law of Electromagnetic Induction:

• It is a process by which primary coil induces a voltage into the secondary coil with the help of magnetic induction. The coil windings are electrically isolated and magnetically connected around a common circuit called core.

• If we apply varying current in one coil, it results in creating a magnetic field and automatically induces the varying voltage in the secondary coil.
• Hence power is transmitted from one coil to another through the magnetic field.
• A slight change in current in transformers helps in increasing and decreasing the AC voltage in many electrical power applications.

Transformers are available in different sizes weighing from cubic centimeters to hundreds of tons. Without transformers it would be very difficult to transfer the power generated at the grid station to the area around the city. The high voltage and current produced at grid station can be reduced to low level which in turn helps in operating the electrical appliances at home.

2. Construction of Transformer

• A simple static transformer is a linear device that consists of coils that are mutually inductive and steel core.
• The windings in the coil are insulated from each other and from the steel core.
• The whole assembly of windings and steel core are encased in a device called tank.
• The major purpose of the tank is to insulate the core assembly from the coil windings.

• In order to take out the terminals of transformer specific bushings made up of capacitor are used.
• Added amount of oil conservator is also used in the tank which provides cooling and reduces friction.

Almost all types of transformers come with a core that is made up of laminated sheets of steel. In order to achieve continuous magnetic path, air gap between the sheets must be kept minimum. Laminated sheets of steel, with the added amount of silicon, are heat treated in order to provide low hysteresis losses and low eddy current and high permeability.

3. Mathematical Formulas for Transformer

Till now, we have seen the basic introduction and construction of Transformers, but when it comes to designing, then we have to make some mathematical derivations. In this section of this tutorial, I am gonna focus on some basic concepts of Transformers and will also share their mathematical formulas.

Turn Ratio

• Transformer has a turn ratio which dictates the operation of transformer and the value of output voltage applied to the secondary windings.
• Turn ratio is defined as a number of turns of the primary coils divided by the number of turns of secondary coil.

TR = Np /Ns

If Ns > Np then it is called step up transformer

If Np > Ns then it is called step down transformer

Transformation Ratio

• Transformation Ratio is defined as the secondary voltage divided by the primary voltage. And it is denoted by K.

K = Vs / Vp or Ns/Np

Transformer EMF Equation

• If we apply electrical source on the primary side of transformer, it will produce the magnetizing flux across the core of transformer.
• It must be a rate of change of flux that is connected to both, primary and secondary coils.
• According to Faraday’s Law of Electromagnetic Induction, changing flux in the coil must induce EMF in it.

• Suppose the flux created forms a sinusoidal function. As it is a rate of change of flux so it must be derivative of sine function which is a cosine function.
• We can easily get the rms value of the induced EMF if we get the rms value of cosine wave and multiply it with the number of turns of coils.

• Now let's have a look at the Faraday's Law of Electromagnetic Induction:

4. Types of Transformers

There are many types of transformers available in market but we can't cover them all in this tutorial. So, I am gonna just focus on those, which are used most commonly. Transformer can be differentiated into following types:

Step Up Transformer

Transformer is known as step up transformer if the number of turns of coil in secondary coil is greater than the number of turns of coil in primary coil. In other words, when transformer is used to increase the voltage on the secondary coil it is called step up transformer.

Step Down Transformer

Similarly, a transformer is known as step down transformer if the number of turns of coil in primary coil is greater than the number of turns of coil in the primary coil. Or if transformer is used to decrease the voltage on the secondary coil, it is called step down transformer.

Impedance Transformer

A transformer is called impedance transformer if it is used to deliver the same voltage to the secondary windings as applied to the primary windings. Hence output remains constant with respect to the input. This type of transformer is used for the isolation of electrical circuits or impedance matching.

Core Type Transformer

Core type transformer comes with a cylindrical coils that are form-wound. In this transformer, windings are encircled around some part of core. The cylindrical coils are insulated from each other with the help of paper or cloth and encompass high mechanical strength. Low voltage windings are arranged in a specific way to provide quick insulation with the laminated core of steel. A core type transformer is shown in the figure given below. L.V and H.V are described as Low voltage windings and High voltage windings respectively.

Shell Type Transformer

Shell type transformer comes with a steel core that covers some part of the coil windings. The coils in this transformer are also form-wound and are arranged in different layers that are insulated from each other. Such type of transformer comes in two shapes i.e. rectangular type or distributed type. It is like a disc arranged with insulated spaces, providing a horizontal cooling. Both, rectangular and distributed types of shell transformer are given in the figures below. In order to provide compact look and minimum movement, this transformer comes with a rigid bracing that combines the whole transformer at one place. Main purpose of bracing is to control vibration and provide minimum noise during operation. Both, shell type and core type transformers, encompass same characteristics but they are different with respect to cost. Shell type transformer is high in demand due to high voltage and the construction of its design. Things that are taken into consideration before buying the transformer include, heat distribution, cooling process, weight, voltage rating and kilo-watt ampere rating. Transformer comes with a tank, brushes, and oil. The oil used in the transformer provides cooling and provides insulation between steel core and coil windings. Sometimes, it happens, the tank used in the transformer doesn’t provide the required cooling effect. This is due to the quality of oil used in the tank. In order to provide accurate cooling and quick insulation, oil must be free from sulfur or alkalies. If we leave alkalies and sulfur in the oil, it causes the oil to moist, hence damaging the quality of oil quite significantly. Even the small amount of this moisture is enough to effect the quality of the oil. If operational tank doesn’t provide required cooling, then we use radiators on the sides of tank. This provides proper cooling and helps in maintaining the temperature of transformer to the required level. In order to make oil free from any moisture, tank must be sealed air-tight. This is easy to apply on the small transformers. In case of huge transformer, providing an air-tight sealing is difficult to implement, hence big chambers are used to maintain the temperature of transformers. These chambers refrain the moisture from adding in the oil. Oil decomposes quickly when it encounters with oxygen during the heating process, leaving a dark material on the transformer, which eventually, can damage the cooling process.

5. Energy Losses in Transformers

Transformers are used for the transformation of electrical energy. The coils used in the transformer are entitled to many energy losses. Some of them are given below:

Heat Loss

Heat loss is a common factor in transformer. Some form of energy is used to reduce the resistance in the transformer in order to provide steady flow of electrical energy from one coil to another. When it escapes from coils of the transformer, this energy is converted into heat which erupts the energy loss. Heat loss can be minimized by using the good conducting material in the coil or by using wires of high cross sectional area. Eddy current also pertains to heat loss. When primary coil is connected to the electrical power, it induces the alternating magnetic field in the primary coil. Same magnetic field also passes through the steel core, helps in inducing the small current in the same core which erupts heat losses. In order to overcome heat loss, steel core must be laminated perfectly. This can be achieved by placing an insulating strips in the strips of the core material. Without effecting magnetic field, these insulating strips results in reducing the eddy current.

Hysteresis Loss

Hysteresis Loss also occurs due to magnetic field passing through the core material. When magnetic field passes through the core, the core becomes real magnet with separate north and South Pole. As the magnetic field changes its direction it also allows to magnetize the core material in another direction. Energy loss happens when core is magnetized in one direction and resists the core to magnetize in another direction. Surplus energy is required to magnetize the core material in other direction. Only way to minimize the hysteresis loss is to use the core material that is made up of good magnetizing material such as iron, which can be re-magnetized easily than other materials.

6. Applications of Transformer:

After reading the whole article, you have got the clear idea what is the basic purpose of electrical transformer. It can be used in our homes, apartments, buildings and electrical appliances i.e. where electrical power is required according to our needs and requirements. Following are the some applications of transformer:

• It can be used to alternate the amount of voltage and current. When current increases, voltage decrease and when voltage increases, then current decreases i.e. P = V * I
• Value of reluctance, capacitance and resistance can be controlled by the help of transformer.
• It finds many applications when it prohibits the flow of DC current from one circuit to another.
• Transformer is also used as an impedance device where same amount of voltage is required to the output as implied to the input. Hence, it also allows the two circuit be electrically isolated.

So, that was all about Transformers. I hope you have all enjoyed it. If you have any problem then ask in comments. Will meet you guys in the next tutorial. Till then take care and have fun !!! :)