Winding your own HF switching power supply transformer - Video 030

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Electronic Tutor

Published on Nov 15, 2024
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Hi, today we are finally winding the transformer for our single-ended forward converter project. We had fully calculated and designed the transformer in the last videos. Today we are winding it. In our example project, the transformer is designed for 60V input voltage. However, I have designed the isolating plugs for mains voltage (300..400VDC). You will see how the safety mechanisms in the transformer work. There are various ways of implementing this. Today I will show you the 4mm indentation on the right and left of the coil body. This results in an isolating distance of 8mm. You can see exactly what this is all about in the video. The isolating distances between the primary and secondary in this transformer are designed in such a way that they will withstand any test by an approval authority. This transformer is really safe. Furthermore, this is a tutorial on building a transformer. You can use the steps 1 to 1 to build your own transformer. For example, I will show you how bifilar winding works, what layer and cover insulation is and much more. I hope you enjoy the video. Here is the start of the single-ended forward converter series: • Switching power supplies Video 020 - Single-ended D... Safety separation distances / air gap / creepage distance: • What is an air gap and creepage distance...

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