In the air core transformers, the flux linkage between primary and secondary winding is through the air.
In the iron core transformers, the windings are wound on multiple iron plates piled together, which provides a perfect linkage path to generate flux.
Air core transformers consist of primary & secondary windings constructed from insulated copper wires.
The iron core transformer is made up of soft iron. It has low retentivity but high coercivity.
Some advantages of using air core transformers are:
– No loss of signal, no distortion &
noise-free operation– No losses of hysteresis & eddy
currents– They are lightweight
The purpose of the iron core transformer is to provide the linkage of the magnetic flux generated by the current flowing around the primary coil to the secondary coil.
Some advantages of using iron core transformers are:
– It has a low stray magnetic field– It needs fewer turns to construct, thus is more efficient and cost- effective– It has a compact design that
needs less space