High Permeability Toroid Assortment

Get a nice assortment of epoxy coated high permeability toroids for your Joule Thief experiments. We use some of the toroids in the one winding Joule Thief kits. The high permeability creates more Henry per wire turn than normal toroids do. All of the toroids in this assortment will function with just one turn each of wire in a JT circuit, though experimenting with different turns can yield better performance. For larger quantities contact us for a discount.