Reliable high-power switching power supply production and circuit diagram

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Description of the circuit diagram of "Reliable High-Power Switching Power Supply": This figure is a simple and reliable high-power switching power supply product (used on large lights) designed for a factory. The following describes the transformer:

(EI-50L) is the inductor for the storage of electric energy (EE-50 core) or (EI-50 core), (EI-50 core) is the output transformer, according to the circuit diagram. (EG6 is a magnetic ring with a diameter of 12 mm). The winding is described on the circuit diagram.

The no-load test is less than 20MA, the conversion efficiency is greater than 90%, and the maximum power is 800W. (Input AC current 3.1A at 60V/13.5A)