Transformers- How it's work and it's use
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Transformers is the probably one of the most useful electric devices ever invented. “TRANSFORMER”- one of 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.
Transformers is the probably one of the most useful electric devices ever invented. “TRANSFORMER”- one of 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.
Transformers-how it's work
A transformer is an electrical apparatus designed to convert alternating current from one
voltage to another. It can be designed to "step up" or "step down" voltages and works on
the magnetic induction principle. A transformer has no moving parts and is a completely
static solid state device, which insures, under normal operating conditions, a long and
trouble-free life. It consists, in its simplest form, of two or more coils of insulated wire
wound on a laminated steel core. When voltage is introduced to one coil, called the
primary, it magnetizes the iron core. A voltage is then induced in the other coil, called the
secondary or output coil. The change of voltage (or voltage ratio) between the primary
and secondary depends on the turns ratio of the two coils.
Types of
voltage to another. It can be designed to "step up" or "step down" voltages and works on
the magnetic induction principle. A transformer has no moving parts and is a completely
static solid state device, which insures, under normal operating conditions, a long and
trouble-free life. It consists, in its simplest form, of two or more coils of insulated wire
wound on a laminated steel core. When voltage is introduced to one coil, called the
primary, it magnetizes the iron core. A voltage is then induced in the other coil, called the
secondary or output coil. The change of voltage (or voltage ratio) between the primary
and secondary depends on the turns ratio of the two coils.
Transformers Based on Voltage Levels
These are the most commonly used transformer types for all the applications. Depends upon the voltage ratios from primary to secondary windings, the transformers are classified as step-up and step-down transformers.
Step-Up Transformer
As the name states that, the secondary voltage is stepped up with a ratio compared to primary voltage. This can be achieved by increasing the number of windings in the secondary than the primary windings as shown in the figure. In power plant, this transformer is used as connecting transformer of the generator to the grid.
Step-Down Transformer
It used to step down the voltage level from lower to higher level at secondary side as shown below so that it is called as a step-down transformer. The winding turns more on the primary side than the secondary side.In distribution networks, the step-down transformer is commonly used to convert the high grid voltage to low voltage that can be used for home appliances.
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