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Transformers and Their Working
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Auto-transformer
An auto-transformer uses a single, continuous winding to act as both the primary and secondary winding, with a tapped section providing the necessary voltage transformation. This results in a more compact and efficient design but offers less isolation.
Three-phase Transformer
A three-phase transformer is used for transforming power in a three-phase system, which is common in power distribution systems. It can be set up in different configurations like delta or wye, which affects the phase shift and voltage levels.
Step-down Transformer
A step-down transformer decreases the output voltage relative to the input voltage. It works on the principle that the secondary coil has fewer turns than the primary coil, thus reducing the voltage.
Step-up Transformer
A step-up transformer increases the output voltage relative to the input voltage. It operates on the principle of electromagnetic induction, with more turns on the secondary coil than on the primary coil.
Isolation Transformer
An isolation transformer is designed to transfer electrical power from a source to a device while isolating the powered device from the power source. It has equal turns on primary and secondary coils to ensure the voltage remains the same.
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