DEFINITION: -
A devise used to increase or decrease the A.C voltage.
PRINCIPLE :-
The device works on the principle of mutual induction.
CONSTRUCTION: -
It consist if a soft iron core upon which are waunded two separate layers of coils.
The coil into which current is sent is called primary coil and other secondary coil.on picture (1)
WORKING: -
When the A.C current, passes through the primary coil,the changing magnetic fueld lines also passes through the secondary coil and according to farady's law e.m.f is induced in the secondary coil.
If Np and Ns are the Number of turns in primary and secondary coil respectively, and Vp and Vs are the voltage across primary and secondary coil respectively, then the transformer equation is (on picture 2 )
Vp/Vs = Np/Ns or Vs/Vp = Ns/ Np
If Vs >Vp ; then the transformer is called step up transformers.
If Vs < Vp ; then the transformer is called step down transformer.
A devise used to increase or decrease the A.C voltage.
PRINCIPLE :-
The device works on the principle of mutual induction.
CONSTRUCTION: -
It consist if a soft iron core upon which are waunded two separate layers of coils.
The coil into which current is sent is called primary coil and other secondary coil.on picture (1)
WORKING: -
When the A.C current, passes through the primary coil,the changing magnetic fueld lines also passes through the secondary coil and according to farady's law e.m.f is induced in the secondary coil.
If Np and Ns are the Number of turns in primary and secondary coil respectively, and Vp and Vs are the voltage across primary and secondary coil respectively, then the transformer equation is (on picture 2 )
Vp/Vs = Np/Ns or Vs/Vp = Ns/ Np
If Vs >Vp ; then the transformer is called step up transformers.
If Vs < Vp ; then the transformer is called step down transformer.
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