The name toroidal comes from toroid, which refers to a doughnut shaped object. Toroidal transformers are similarly shaped and are inherently more efficient compared to standard laminated ‘EI-Style’ transformers. Toroidal transformers, or ‘toroids’ as they are often referred to, are smaller in size and offer reduced weight. Due to this, toroidal transformers can be as much as 50% lighter when compared to laminated transformers. Additionally, toroidal transformers offer high efficiency. This means fewer losses generated by the transformer, which results in less heat. Also, with today’s increasingly stringent environmental regulations, it is important to reduce the standby losses. The toroidal transformers help accomplish that. Due to the high efficiency, toroidal transformers run at a low operating temperature. This can be important as it increases the life of other heat sensitive components. The toroidal transformer has very low no-load losses, meaning that when the transformer is energized with no load applied to the secondary windings, the stand-by current is very low. This is important in applications where multiple transformers are used in the same location. For example, in a hospital where many pieces of the same equipment could exist. Hospital beds and breathing equipment often utilize toroidal transformers for this very reason. Also, because the winding is wound over 100% of the core, the transformer emits very low magnetic stray field, reducing the potential interference with other components. Another advantage is that toroidal cores do not have any gaps, which makes the transformer acoustically quiet. Amgis manufactures all cores in house and are not bound by standard sizes. This makes it possible to design the transformers with the optimal core size in mind. Finally, the toroidal transformers are simple to mount; one bolt is needed through the center.