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A transformer transforms one level of voltage and current into another. A step up transformer raises voltage and lowers current, usually to make long power lines more efficient, and a step down transformer raises current and lowers voltage, usually to make it safe for homes and appliances.
There are other more specialized Transformers as well. Isolation transformers provide galvanic (DC) isolation between primary and secondary. They may step the voltage up or down, or not, as needed. Current transformers, used as part of an instrumentation system, transform high current flow in a conductor (feeding a load, such as a motor), to a lower current, usually 5 amperes full scale. They are usefull when very large currents must be measured.
Another Answer
It is incorrect to say that a step-up transformer 'transforms voltage up, and current down' or that a step-down transformer 'steps voltage down, and current up'. This suggests that the primary current determines the secondary current, which it most-definitely doesn't! The value of the current in a transformer's primary winding is determined by the load, so the load determines the value of the secondary current which, in turn, determines the value of the primary current.
Wiki User
∙ 9y ago
Wiki User
∙ 9y agoA transformer converts voltage to different values (the amount of power remains the same). If you have a transformer with a turns ratio of 1 to 10, and apply 120 volts to the "10" ratio side, you will get 12 volts on the "1" side. If the current on the "10" side is 1 Ampere, the current on the "1" side will be 10 Amperes.
Power is equivalent to the voltage times the current, so the power going in the "10" side is (120 volts x 1 ampere = ) 120 watts. The power going out the "1" side is (12 volts x 10 amperes = ) 120 watts as well.
Wiki User
∙ 13y agoA generator transforms mechanical energy to electrical energy
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What type of electrical equipment cannot convert AC into DC?
A transformer cannot convert AC into DC.
What formula would be used to convert at current transformer rating at 60Hz to 25Hz?
I don't understand your question. Are you asking how to convert from 60hz to 25hz using a transformer? That cannot be done. Frequency in = frequency out.
Does electrical transformer use a DC or AC source?
A transformer is a device to convert high voltage AC to low voltage AC & vice-versa. It works on the principle of induction. Since induction occurs only in an AC supply, a transformer cannot work on DC.. So, it is not possible to convert DC supply to AC using transformer. You would need an inverter to convert DC to AC.
What is meaning of 9v-0-9v transformer?
It is kind of transformers called center-tap transformer its main function is to transform primary voltage to 2 secondary voltages or vice versa. In your statement the transformer will convert the input voltage to 2 voltage each is 9v or the opposite it will convert the 2 input voltages with each 9v to a certain value depending on the turns ratio of the transformer.
What effect will a transformer have on alternating current?
A transformer will convert the power to a different voltage, higher or lower depending on the requirement, while wasting very little of the power.
Which transformer convert hvac to hvdc?
Decepticon
Can you use a transformer to convert modified sine wave to pure sine wave?
we cannot use transformer because transformer cannot change frequency . . .
How a rectifier transformer deffer from a power transformer?
rectifier transformer converts acinto dc.but,power transformer convert step up or step down ac energy without changing frequency
What type of electrical equipment cannot convert AC into DC?
A transformer cannot convert AC into DC.
What formula would be used to convert at current transformer rating at 60Hz to 25Hz?
I don't understand your question. Are you asking how to convert from 60hz to 25hz using a transformer? That cannot be done. Frequency in = frequency out.
How do you convert car battery into 220 w electricity?
use a transformer.
Does avr converts 220v to 110v?
yes, but you need a transformer to convert it,
How is 11kv convert to 230v?
The higher voltage it transformed to a lower voltage by the use of a step down transformer.
How transformer converts mva to kv?
Transformer does not convert MVA to KV. MVA is unit of power, where as KV is unit of Voltage. Transformer converts voltgae. Step up or Step down.
Does electrical transformer use a DC or AC source?
A transformer is a device to convert high voltage AC to low voltage AC & vice-versa. It works on the principle of induction. Since induction occurs only in an AC supply, a transformer cannot work on DC.. So, it is not possible to convert DC supply to AC using transformer. You would need an inverter to convert DC to AC.
How do you convert 115 volt into 230 volt?
The only way to do that is with a transformer. They make inline transformers that convert 230 to 115 and they simply plug in inline.
What Is necessary to convert higher voltage power to low voltage power?
A transformer
