Ferrite single winding Ballast Transformer

Ferritecore power transformers are widely used inswitched-mode power supplies(SMPSs). The powder core enables high-frequency operation, and hence much smaller size-to-power ratio than laminated-iron transformers.

Ferrite transformers are not used as power transformers at mains frequency since laminated iron cores cost less than an equivalent ferrite core.

Ferrite-core transformers are widely used inintermediate frequency(IF) stages insuperheterodyneradio receivers. They are mostly tuned transformers, containing a threaded ferrite slug that is screwed in or out to adjust IF tuning. The transformers are usually canned (shielded) for stability and to reduce interference.