![]() So, primary is 144 turns of AWG 27 wire based on switching frequency and current and secondary is 4 turns of AWG 15 based on current but the switching frequency of that AWG is very low compared to the switching frequency of TNY266 i.e. So, I calculated primary and secondary turns used the table given in below link: ![]() It seems I need to wind transformer myself. I calculated all the values which I attached in excel sheet. I referred following 2 links for making my first design: I need to get as output and using TNY266 as offline switcher for SMPS regulation. I took 210V as min and 250V as max input. I stay in India where 230V ac rms 50Hz is available. This is my first time making SMPS for my application, so parden my silly mistakes and questions if any.
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