第三章详细介绍了软起动控制器的硬件设计，包括主电路、控制电路、驱动保护回路和辅助开关电源电路的分析和设计。
The third chapter mainly introduces the hardware design of soft starter, including the main circuit, control circuit, drive circuit, and protect circuit and auxiliary switched power design.
第三章详细介绍了软起动控制器的硬件设计，包括主电路、控制电路、驱动保护回路和辅助开关电源电路的分析和设计。
The third chapter mainly introduces the hardware design of soft starter, including the main circuit, control circuit, drive circuit, and protect circuit and auxiliary switched power design.
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