AUTO TRANSFORMERS
An autotransformer is a transformer which has part of its winding common to the primary and secondary circuits. Fig. 1(a)…
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EMF EQUATION OF A TRANSFORMER
The magnetic flux ϕ set up in the core of a transformer when an alternating voltage is applied to its…
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AIR CORE TRANSFORMER
Some small transformers for low-power applications are constructed with air between the two coils. Such transformers are inefficient because the…