How to Add Extra Windings to a Toroidal Transformer – Custom Multi-Voltage Hack @AccidentalScience
How to Add Extra Windings to a Toroidal Transformer – Custom Multi-Voltage Hack  @AccidentalScience
Uploaded February 2025 | Updated September 2026, 1 week ago
Want to add uncommon or extra voltages to a standard transformer—without breaking the bank? In this video, I’ll show you how to hack a toroidal transformer to add custom windings for multiple isolated outputs, plus a simple way to add a shield winding.

This is a cheap and reliable solution for those one-off or prototype circuits where ordering a custom transformer would be overkill. And while stacking multiple transformers can work, it’s bulky and inefficient.
With this method, you’ll learn how to get the features you need from a single toroidal core—fast.

🧰 What You’ll Learn:
- How to add custom secondary windings
- How to calculate the wire size and turns
- How to include a shield winding for noise reduction
- Tips for safe, easy transformer modification

Perfect for electronics hobbyists, DIY power supply builders, and anyone who needs multiple or unusual voltages for a special project.

💬 Got questions? Drop them in the comments — I read and reply!

👍 Like this hack? Don’t forget to like, share, and subscribe for more DIY electronics.

#DIYTransformer #ToroidalHack #ElectronicsProjects #CustomPowerSupply #TransformerMod #MakerTips


How to Make Your Own Potentiometers: youtu.be/cqBcxCgveGs

Full series of #Electronics:
youtube.com/playlist?list=PLwbCeSU2Kq_zORt4un2iQ3JUYxzWF3cTJ

Website: accidentalscience.com
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How to Add Extra Windings to a Toroidal Transformer – Custom Multi-Voltage Hack

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