Design a Coil for a Specific Inductance

YouTuber [RimstarOrg] shows how to make a DIY inductor for a specific inductance. This is obviously a great skill to learn as sometimes your design may call for a very accurate inductance that may be hard to find otherwise.

It may seem daunting when it comes to making your own inductor you may have a few questions such as: What type of core will I use?, How many turns does my coil need? or How do I calculate these parameters to create the specific inductance I desire? [RimstarOrg] goes through all of This, he even has a handy Inductance calculator on his website to make it even easier for you. However, he does provide all the formula’s needed to calculate the inductance in the video below. Using a DIY AM Radio receiver he demonstrates in a visual way how to tune an AM Radio with a wiper on his home-built coil. Changing the inductance with a wiper changes the frequency of the radio, this is what is called a variable Inductor, Basically an inductor in which you can change its inductance on the fly.

This video is really education and great for understanding the foundations of inductors. While you may just go to a supplier and buy yours it’s always great to have the knowledge there and that if you can’t find a supplier or just can’t wait you can always make your own.

Filed under: how-to, parts

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