Transformers
, Transformer
An A.C. device used to change high voltage low
current A.C. into low voltage high current A.C. and
vice-versa without changing the frequency
In brief,
1. Transfers electric power from one circuit to another
2. It does so without a change of frequency
3. It accomplishes this by electromagnetic induction
4. Where the two electric circuits are in mutual
inductive influence of each other.
, Principle of operation
• It is based on principle of MUTUAL INDUCTION.
• Energy can be efficiently transferred by induction
from one set of coil to another by means of a varying
magnetic flux, provided that both sets of coils are on
a common magnetic circuit.
• According to Faraday’s law of electromagnetic
induction, the rate of change of flux is directly
proportional to induced emf.
• Lenze’s law gives the direction of induced emf to be
the opposite of the cause production it.
d
e
dt
, Principle of operation
, Transformer
An A.C. device used to change high voltage low
current A.C. into low voltage high current A.C. and
vice-versa without changing the frequency
In brief,
1. Transfers electric power from one circuit to another
2. It does so without a change of frequency
3. It accomplishes this by electromagnetic induction
4. Where the two electric circuits are in mutual
inductive influence of each other.
, Principle of operation
• It is based on principle of MUTUAL INDUCTION.
• Energy can be efficiently transferred by induction
from one set of coil to another by means of a varying
magnetic flux, provided that both sets of coils are on
a common magnetic circuit.
• According to Faraday’s law of electromagnetic
induction, the rate of change of flux is directly
proportional to induced emf.
• Lenze’s law gives the direction of induced emf to be
the opposite of the cause production it.
d
e
dt
, Principle of operation
