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AP Value Method for Selecting Switching Power Supply Magnetic Cores

This document introduces the AP value method, a theoretical and practical approach for selecting magnetic cores used in switching power supplies. It covers the selection of core materials, such as Mn-Zn ferrite, and discusses various core structures like EE, ETD, EI, U, toroidal, and ring types, highlighting their characteristics and applications. The text emphasizes that a reasonable core selection is crucial for optimizing the performance, size, and weight of the power supply. This manual is written in Chinese.

Covers: Magnetic Core Materials · Core Structures (EE, ETD, EI, U, Toroidal, Ring) · Working Flux Density (B Value) · Window Utilization Factor (K) · AP Value Calculation · Transformer Design