How to make 2000W transformer for Sine Inverter | Part 1

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Next project I will create a sine HF 2000W inverter.
This is an inverter using a pulse transformer, I use 2 50mm toroidal cores.
Stage 1: The 12V voltage from the battery will be boosted to 350VDC with the pulse transformer. The oscillator is SG3525
Stage 2: The voltage of 350VDC will be converted to 220VAC using H bridge and EGS002.
The LC filter will convert the voltage from the H-bridge to a sine 220VAC.
The efficiency of this circuit is 92%. This is part 1, This video has 3 parts, I will upload the video soon.

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#Inverter
#2000W
#DIY