The
toroidal transformer has the ideal shape for producing a
transformer with the minimum of material. The high efficiency
which is obtained with this type of transformer enables
it to be conservatively rated without incurring size or
weight penalties.
There are no loose laminations or air gaps in the toroidal
design which, together with the virtual absence of any external
field, makes the toroidal transformer particularly suitable
for those applications where electrical and mechanical noise
must be kept to a minimum.
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