Toroidal transformers - the best transformers around!

4-44 - elektor april 1982 toroidal transformer toroidal transformer the best transformers . . . around! Ring core or toroidal transformers are becoming fashionable. Thin is beautiful? As their name implies, they are "round" and low in profile, allowing the home constructor and manufacturer, to build highly compact circuits. This seems to be necessary in order to satiate the public"s appetite for any equipment that looks like a permanent "Weight-Watcher". Seriously, they do have excellent "electrical" qualities, and advantages over the conventional transformer, other than looks. Unfortunately good taste is always relatively expensive. The toroidal transformer has a ring core formed by a tightly bound metal lami- nated band. Copper windings are simply placed on the core without the use of bobbins. The wire is wound over the complete surface of the core and this considerably aids the dissipation of heat. Due to the round shape, there is good "concen- tration" of the magnetic flux l...