Potting Using the toroid, I rigged up a quick and dirty half wave supply to test the DC-DC modules. Under load, the hum/buzz of the transformer was quite extreme. I was reminded of the custom toroids ...

HF radios often use toroidal transformers and winding them is a rite of passage for many RF hackers. [David Casler, KE0OG] received a question about how they work and answered it in a recent video ...

Featuring up to 97.4 percent power efficiency and a highly efficient design using nearly 30 percent less material, the new VPT Series toroidal power transformers from Triad Magnetics ...