针对工业电源恶劣的工作环境，对工业电源小功率器件的散热设计进行了探讨。
This article discusses the thermal design of miniwatt semicondutors in industrial power, which works in terrible environments.
由于本开关电源系统应用环境恶劣，在硬件电路设计时，分析了电磁兼容问题，从硬件设计上保证了系统工作稳定性。
This SMPS is applied in execrable circumstances, so when designing the hardware circuit, EMC problem is also discussed, which insures the SMPS system working stability.
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