Lighting Transformers are usually used in residences, swimming pools, gardens to specifically feed lighting loads. These transformers step the low voltage of the distribution system, 230 V to a still lower voltage (Extra Low Voltage) 12V or 24 V.
The use of such low voltage, enables the design of smaller lights. In applications such as lighting in swimming pool or gardens, lighting transformers producing voltages less than 30 V are used for safety reasons.Lighting transformers are usually hidden in the ceiling or in the ground on in a recess in a wall. Since the output voltage of the lighting transformer is quite low, they need to be placed very near the lighting load to avoid any drop in the voltage.
A single lighting transformers can power more than one lighting load. Lighting transformers for outdoor applications are designed with weatherproof enclosures. Lighting transformers can be classified into two major types, the electromagnetic type transformers and the electronic transformer type.
The electromagnetic type transformer is designed like a conventional step down transformer. A toroidal core is usually used to avoid the humming noise from the transformer.
Lighting transformers also provide protection against surges, spikes and other transient phenomena