Toroidal inductors and transformers are passive electronic components, consisting of a circular ring (donut shaped) magnetic core around which wire is wound. Ferrite coils of this fashion can act like a filter for Electro-Magnetic Interference. Toroidal inductors and transformers are used in a wide range of electronic circuits like EMF suppressors, power supplies and amplifiers. These are in turn used in the vast majority of electrical equipment ie. TVs, radios, computers, mobile phones and much more! This is a very important tool for EMF remediation. We suggest listening to this podcast a few time to really understand the importance of these devices. We also include a wonderful example of its design principles in action at one of the most luxurious and expensive hotels in the World. Please read disclaimers.