Types of transformers

Unless you’re one of the pole-climbing, substation-fixing, electrical-testing superstars, you’re probably not thinking about transformers all the time. Well, that changes now. Transformers are everywhere. And trust me, you’re reaping the benefits of them every day– whether you realize it or not. In our homes, we use alternating current (AC) because it is easier to generate and transmit. AC is typically transmitted at higher voltages and then transformed into a safer and usable lower voltage – powering the electricity we all know and love and can’t fathom living without! Now, we’re not going to get into the details of how transformers work today, since this blog is all about the types of transformers. But, at the most basic level, transformers take higher voltages and convert them down to lower, useable voltages, like we mentioned above. If you’re interested in learning more about the science behind this electro-magnetic transformation, we recommend So, what types of transformers are there? Power Transformers A power transformer transfers electricity between a generator and the distribution primary circuits. It gets a little bit confusing because many use the term ‘power transformer’ to encompass a bunch of transformers, rather than a specific design type. Likewise, some even refer to large transmission transformers as power transformers, to easily differentiate between distribution transformers. Regardless of the exact definition, power transformers can have one of three j...

3. Wrapping It Up A transformer is a device used in power transmission to transfer electrical energy from one electrical circuit to another, or in multiple circuits at a time. In other words, it is a voltage control device that is widely used in the distribution and transmission of AC power. These are made to increase or decrease the AC voltage between the circuits while controlling the frequency of the current by creating a conductive connection between the two circuits. This is done through the application of Transformers can also be used for isolation, where voltage is equal to the voltage output, with the individual coils not electrically tied to each other. A wide range of transformer designs and sizes are located in electronic and electric power applications. Read Also: Types of Transformers Following are the main types of transformers: • Step down transformer • Step up transformer • Single phase transformer • Three phase transformer • Power transformer • Distribution transformer • Current transformer • Isolation transformer • Potential transformer • Instrument transformer • Air Core transformer • Iron core transformer • Ferrite core transformer • Toroidal core transformer • Autotransformer • Grounding or earthing transformer #1 Step Down Transformer Image: IndiaMart A step down transformer converts high voltage from the primary side to low voltage on the secondary coil resulting in a decrease in the output voltage. In this, the overall winding ratio of primary and s...

The different types of transformer are Step up and Step down Transformer, Power Transformer, Distribution Transformer, Instrument transformer comprising current and Potential Transformer, Single phase and Three phase transformer, Auto transformer, etc. Contents: • • • • • • • • • Various Types of Transformer The various types of transformer shown in the figure above are explained in detail below. Step up and Step down Transformer This type of transformer is categorized on the basis of a number of turns in the primary and secondary windings and the induced emf. Step-up transformer transforms a low voltage, high current AC into a high voltage, low current AC system In this type of transformer the number of turns in the secondary winding is greater than the number of turns in the primary winding. If (V 2> V 1) the voltage is raised on the output side and is known as Step-up transformer Step down transformer converts a high primary voltage associated with the low current into a low voltage, high current. With this type of transformer, the number of turns in the primary winding is greater than the number of turns in the secondary winding. If (V 2< V 1) the voltage level is lowered on the output side and is known as Step down transformer Power Transformer The power transformers are used in the transmission networks of higher voltages. The ratings of the power transformer are as follows 400 KV, 200 KV, 110 KV, 66 KV, 33 KV. They are mainly rated above 200 MVA. Mainly installed at...

“TRANSFORMER”- one of the oldest innovations in Electrical Engineering. A Transformer is an electrical device that can be used to transfer the power from one circuit and another circuit without physical contact and without changing its characteristics like frequency, phase. It is an essential device in every electrical network circuitry. It consists of majorly two circuits, namely primary circuits and one or more secondary circuits. Please refer to the link Working Principle of Transformer The transformer working depends upon Faraday’s electromagnetic induction law. The mutual induction phenomenon between two or more winding is responsible for power transformation. According to Faraday’s laws, “The Rate of change of flux linkage with respect to time is directly proportional to the EMF induced in a conductor or coil”. Types of Transformers There are several transformer types used in the electrical power system for different purposes, like in power generation, distribution and transmission, and utilization of electrical power. The transformers are classified based on voltage levels, Core medium used, winding arrangements, use and installation place, etc. Here we discuss different types of transformers are the step up and step down Transformer, Distribution Transformer, Potential Transformer, Power Transformer, 1-ϕ, and 3-ϕ transformer, Autotransformer, etc. Different Types of Transformers Types of Transformers based on Voltage Levels These are the most commonly used transfor...

Contents • 1 Power transformer • 1.1 Laminated core • 1.2 Toroidal • 1.3 Autotransformer • 1.4 Variable autotransformer • 1.5 Induction regulator • 1.6 Polyphase transformer • 1.7 Grounding transformer • 1.8 Phase-shifting transformer • 1.9 Variable-frequency transformer • 1.10 Leakage or stray field transformer • 1.10.1 Uses • 1.11 Resonant transformer • 1.11.1 Constant voltage transformer • 1.12 Ferrite core • 1.12.1 Planar transformer • 1.13 Oil-cooled transformer • 1.14 Cast resin transformer • 1.15 Isolating transformer • 1.16 Solid-state transformer • 2 Instrument transformer • 2.1 Current transformer • 2.2 Voltage transformer or potential transformer • 2.3 Combined instrument transformer • 3 Pulse transformer • 4 RF transformer • 4.1 Air-core transformer • 4.2 Ferrite-core transformer • 4.3 Choke transformer • 4.4 Line section transformer • 4.5 Balun • 5 IF transformer • 6 Audio transformer • 6.1 Loudspeaker transformer • 6.2 Output transformer • 6.3 Small-signal transformer • 6.4 Interstage and coupling transformer • 7 Other types • 7.1 Transactor • 7.2 Hedgehog • 7.3 Variometer and variocoupler • 7.4 Rotary transformer • 7.5 Variable differential transformer • 7.6 Resolver and synchro • 7.7 Piezoelectric transformer • 7.8 Flyback • 8 See also • 9 References This is the most common type of transformer, widely used in electric power transmission and appliances to convert Small appliance and electronic transformers may use a split bobbin, giving a high level of insul...

Table of Contents • • • • • • • • • • • • • • • • • • • • • • • • • • • • What is a Transformer? To know more about the, refer to the previous post about: Types of Electrical Transformers There are different types of transformer based on their usage, design, construction, etc. We will discuss some of these types in this article below; Based on its Core; Classification of transformer base on the material used for its core, • Air core Transformer This type of transformer uses plastic or air as its core. The windings are either wounded around the plastic core or there is no physical core. The air has very low magnetic permeability. So there is no flux linkage between the coils as they are linked through the air between them. The absence of Ferro-magnetic core (such as iron core) reduces the core losses, as these losses increase with the frequency. The ferromagnetic material also causes distortion in high-frequency signal. So the air core transformer is suitable for radio frequency current. Another positive point of air core transformer is that they are lightweight & they are suitable for mobile electronic devices such as radio transmitter etc. • Ferromagnetic/Iron Core Transformer As the name suggests, these transformer’s core is made of ferromagnetic material. A ferromagnetic core is used in a transformer to increase its magnetic field. The strength of the magnetic field depends on the magnetic permeability of the material used. Iron is a common ferromagnetic material used i...

A transformer is a widely used device in the electrical and electronics domain. It is an electromagnetic device which follows the basic principle of electromagnetism discovered by Michael Faraday. We have covered about Transformers construction and operation in detail in previous tutorial. Here we will cover different types of transformers used in different types of applications. However, all types of transformers follow the same principles but they have different construction method. And with little bit of effort you can also Transformer Types based on Voltage Level A Transformer can have multiple types of construction. Transformer does not have any electrical connection from one side to another; still, the two electrically independent coils can conduct the electricity by electromagnetic flux. A transformer can have multiple coils or windings on the primary side as well as on the secondary side. In several cases, multiple primary sides, where two coils are connected in series, often called as a center tapped. This center tapped condition can also be seen on the secondary side. Transformers can be constructed in a way that it can convert the voltage level of the primary side to the secondary side. Depending on the voltage level, the transformer has three categories. Step Down, Step Up and Isolation Transformer. For the Isolation transformer, the voltage level is the same for both sides. 1. Step-Down Transformer Step down Transformer is used in both Electronics and Electric...

Transformers are devices used to transfer power between two AC circuits. It works on Faraday’s Law of electromagnetic induction. In all transformers except auto-transformers electric power is transferred from one circuit to another by a common magnetic field produced. When an alternating current is applied to the input side of the transformer, it produces a magnetic field. Due to the sinusoidal nature of the AC supply, the magnetic field produced shall be varying. When this varying magnetic field intersects the coil at the output side of the transformer an E.M.F is induced in it. • • • • • • • • • • • • • • Apart from the types of transformers mentioned above, there are various other transformer types such as RF transformers, audio transformers, solid-state transformers, etc. which are not discussed in this section. Power transformers Transformers that are used at the generating station to step up generated voltage are normally referred to as power transformers. These transformers are usually rated above 500kVA and are present between the generator and the distribution circuits. These transformers are also known as step-up transformers. Their construction varies with rating and installation locations. For outdoor use, they are usually oil-immersed whereas power transformers intended for indoor use are primarily dry type. Depending on the kVA rating power transformers are classified into small power transformers: 500 to 7500kVA, medium power transformers: 7500kVA to 100MVA,...

A transformer is a widely used device in the electrical and electronics domain. It is an electromagnetic device which follows the basic principle of electromagnetism discovered by Michael Faraday. We have covered about Transformers construction and operation in detail in previous tutorial. Here we will cover different types of transformers used in different types of applications. However, all types of transformers follow the same principles but they have different construction method. And with little bit of effort you can also Transformer Types based on Voltage Level A Transformer can have multiple types of construction. Transformer does not have any electrical connection from one side to another; still, the two electrically independent coils can conduct the electricity by electromagnetic flux. A transformer can have multiple coils or windings on the primary side as well as on the secondary side. In several cases, multiple primary sides, where two coils are connected in series, often called as a center tapped. This center tapped condition can also be seen on the secondary side. Transformers can be constructed in a way that it can convert the voltage level of the primary side to the secondary side. Depending on the voltage level, the transformer has three categories. Step Down, Step Up and Isolation Transformer. For the Isolation transformer, the voltage level is the same for both sides. 1. Step-Down Transformer Step down Transformer is used in both Electronics and Electric...

Unless you’re one of the pole-climbing, substation-fixing, electrical-testing superstars, you’re probably not thinking about transformers all the time. Well, that changes now. Transformers are everywhere. And trust me, you’re reaping the benefits of them every day– whether you realize it or not. In our homes, we use alternating current (AC) because it is easier to generate and transmit. AC is typically transmitted at higher voltages and then transformed into a safer and usable lower voltage – powering the electricity we all know and love and can’t fathom living without! Now, we’re not going to get into the details of how transformers work today, since this blog is all about the types of transformers. But, at the most basic level, transformers take higher voltages and convert them down to lower, useable voltages, like we mentioned above. If you’re interested in learning more about the science behind this electro-magnetic transformation, we recommend So, what types of transformers are there? Power Transformers A power transformer transfers electricity between a generator and the distribution primary circuits. It gets a little bit confusing because many use the term ‘power transformer’ to encompass a bunch of transformers, rather than a specific design type. Likewise, some even refer to large transmission transformers as power transformers, to easily differentiate between distribution transformers. Regardless of the exact definition, power transformers can have one of three j...