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A transformer is a device that changes an electrical voltage or current from one level to another. (In radio frequency applications, it is used to couple the RF electronic circuits.)
Transformers are used to:
- Convert high voltage alternating current (AC) to desired low voltage alternating current (AC). Such transformers are called step down transformers.
- Convert low voltage alternating current (AC) to desired high voltage alternating current (AC). Such transformers are called step up transformers.
- Electrically separate one part of the circuit (or any other electrical system) from the other part, termed as 'electrical isolation'. Such transformers are called isolation transformers.
The transformation may involve the loss of some power as waste heat.
(see related question)
In computer power supplies, the transformers serve to lower the voltage coming in from the 120 volts (or 240 in some cases) coming from the outlet to 12v, 5v or 3.3v. Differrent components in the PC use one of these three voltages.
Autotransformers can be used as buck/boost transformers, increasing or decreasing a supply voltage by a small amount. They can also be used in place of a full transformer if the voltage ratio between the primary and secondary is fairly small (less than ~4). This can save cost in both physical equipment cost and area equipment takes up.
The supply voltage can only be decreased, but can not be increased using auto transformers.
Interconnecting transfomers are used to connect two EHV line at different voltages i.e. 220KV to 400KV. The interconnecting transformer are auto transformer which can step up & step down the voltages for synchronization of two grid voltages.
The primary winding is connected to the supply, and its function is to circulate a current that will magnetise the core. The secondary winding will supply the load, and its function to have the secondary voltage induced into it.
the use of transformer in electrical engg is to step up or step down the electrical quantities . they are used in substations to power supply. current , potential transformers are also used for measuring high current and voltages respectively.
small transformers are widely used in electronics circuits to step down the 230v supply voltage to 9,5v etc.
In home electronics, it changes 120volt AC electricity into (usually) 12volt or less DC electricity for use in small electronic items that do not need high voltage to operate.
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The basic function of a transformer is to change?
The basic function of a transformer is to change voltage levels.
What is the function of radiator bank in transformer?
The function of the radiator ban in a transformer is to cool the transformer oil.
What are the advantages of double wound transformer over a auto transformer?
The difference between a double wound step up transformer and an auto transformer is the double wound on the step up transformer and the single wound on the auto transformer.
What does auto in autotransformer stands for?
"Auto" refers to the single winding used an auto transformer.
What is the function of askerals in a transformer?
its a type of transformer oil which provides insulation ...
Can you use ordinary transformer in place of auto transformer?
yes we can place auto transformer in place of original transformer
Why auto transformer is lighter than conventional type?
because the copper is saved in the auto transformer that is the ratio of weights of copper in auto transformer to normal transformer is (1-(1/a)) where a is transformer ratio
What is the function of fans in transformer?
The function of fans in a transformer is to regulate the transformer's temperature.
The basic function of a transformer is to change?
The basic function of a transformer is to change voltage levels.
What is the function of radiator bank in transformer?
The function of the radiator ban in a transformer is to cool the transformer oil.
What is Auto transformer and ordinary transformer?
auto transformer is a one winding transformer which is are used for step up and step down voltage without chang its power and friquncy
What are the advantages of double wound transformer over a auto transformer?
The difference between a double wound step up transformer and an auto transformer is the double wound on the step up transformer and the single wound on the auto transformer.
What does auto in autotransformer stands for?
"Auto" refers to the single winding used an auto transformer.
What is the function of askerals in a transformer?
its a type of transformer oil which provides insulation ...
What type of transformer has only a single winding?
the auto transformer is the one winding transformer. it ismaily used in practical purpose.
Where can one purchase an Auto Transformer?
One can purchase an Auto Transformer from websites like Mastech Power Supply, Amazon, Ali Express, RS-Online, eBay, Foster Transformer, Farnell and Alibaba.
Why can auto transformer be dangerous?
(An auto-transformer can be dangerous because the primary is not electrically isolated from the secondary. If the auto-transformer is connected to mains power, this is the equivalent of sticking your fingers directly in the wall plug; not a good idea!) aka deceptacons like megatron will kill you.
