Charming bifilar toroid It's a beauty, isn't it? I love the two colors of magnet wire against the barely visible green enamel on the toroid itself. (This is part of a DIY "solder your own wine charms" project; read more about it here.) ← Previous Album: Electronic component wine charms Next → Photo by Windell H. Oskay CC BY 2.0 March 28, 2007