Hi, I'm a newpersons (actually just changed name -email- etc.)
so be sporting and tell me (pls.) what in this strange place those
things are and there hundreds and millions of uses...
I bet they could take on the paperclip / prestick etc.
What are toroids? Sometimes these are incorrectly spelt torroids. These come in two types, powdered iron toroids or ferrite toroids. Both introduce permeability. Toroids look exactly like doughnuts and come in various diameters, thicknesses, permeabilities and types depending upon the frequency range of interest. Includes links to Micrometals inductor design software and Micrometals RF design software."