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DC to AC Switched Mode Power Supply

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giangpoh

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Hello guys, currently i'm working on a DC 12V to AC 230V switched mode power supply using SG3525. I noticed that most of the output of the reference SMPS circuits that I found are not pure sine wave. Do u guys have any good circuits to share?

Besides that, the transformer is giving me some headache. I plan to custom build the transformer myself. Can u guys give me some ideas?
 

Hi giangpoh,
see this article. it may help you:

and


Regards,
Davood.
 

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