Specifically, the field from a toroidal inductor is pretty much self-contained. Toroids have an inherent self-shielding property. Another benefit from the use of toroids is that shield cans aren't necessary in order to isolate the toroidal coil from adjacent components. Small toroid cores are less expensive than good quality ceramic coil forms - especially those that contain adjustable powdered-iron or ferrite slugs. Why should we use toroids in place of air-core or slug-tuned coil forms? Foremost of the reasons is cost, at least for experimenters. This article focuses on the day-to-day questions that I receive about toroids and how to use them. But some of the application methods are not highlighted in the average text that treats these devices. Numerous articles concerning toroidal coils and transformers have appeared in QST over the years, and The ARRL Handbook includes a section on the application of toroids. Home - Techniek - Electronica - Radiotechniek - Radio amateur bladen - QST - Toroids - Some practical considerationsĪre you confused when it comes to using toroids? The tips given in this article may simplify your next project.ĭo you work with toroidal inductors and transformers? Are you confused about some of the practical aspects that relate to these useful devices? If your answers to these questions are yes, you're not unique among your experimenting peers!
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