# toroidal transformer

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Joined: Jun 17, 2019

Replies: 1
toroidal transformer
June 17, 2019 - 9:13am

I understand the ratio of transformer windings, but how do you calculate the  number of wraps for each side? Let's say if you you have 12v on the input and want 72v on the output, you would have a 1-6 ratioo. So if you wrap 10 wraps on the 12v side, you would need to wrap 60 wraps on the output side. But if I wrap 100 wraps on the input side and 600 on the output side, my ratio remains the same. What am I gaining by increasing the number of wraps? I hope this wasn't too convaluted. Thanks

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Joined: Aug 11, 2018

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Number of turns decides the current rating
June 17, 2019 - 12:16pm

You are correct the turns ratio (Ns/Np) is just a ratio number and it can be scaled up in the same ratio for the same voltage rating. But the number of turns also decides the current rating of the transformer. Larger the number of turns, larger will be the current value. This is the reason why you find high current transformers to be bulky in size. To know more about transformer you can read the article below

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Joined: Jun 17, 2019

Replies: 1
Thank you, That makes total
June 18, 2019 - 4:16am

Thank you, That makes total sence. I kind of thought that would be the case, but I didn't want to guess. Thanks agian!