A transformer is an electrical device that transfers energy from one circuit to another by magnetic coupling, without requiring relative motion between its parts. A transformer comprises two or more coupled windings, and, in most cases, a magnetic core to concentrate magnetic flux. A changing voltage applied to one winding creates a time-varying magnetic flux in the core, which induces a voltage in the other windings.
TYPES OF TRANSFORMER
* Step-up
The secondary has more turns than the primary.
* Step-down
The secondary has fewer turns than the primary.
* Isolating
Intended to transform from one voltage to the same voltage. The two coils have approximately equal numbers of turns, although often there is a slight difference in the number of turns, in order to compensate for losses (otherwise the output voltage would be a little less than, rather than the same as, the input voltage).
* Variable
The primary and secondary have an adjustable number of turns which can be selected without reconnecting the transformer.
TYPES OF TRANSFORMER
* Step-up
The secondary has more turns than the primary.
* Step-down
The secondary has fewer turns than the primary.
* Isolating
Intended to transform from one voltage to the same voltage. The two coils have approximately equal numbers of turns, although often there is a slight difference in the number of turns, in order to compensate for losses (otherwise the output voltage would be a little less than, rather than the same as, the input voltage).
* Variable
The primary and secondary have an adjustable number of turns which can be selected without reconnecting the transformer.
