When frequency converter and PLC is at fault, automatic switch to the original soft start work frequency power operation, ark to ensure the normal work of the compressor.
当变频器及PLC发生故障时，自动切换到原软启动柜工频电源运行，以保证压缩机的正常工作。
This paper introduces design principle of automatic switch on and automatic driver of DC/DC converter. The circuit is maked and adjusted.
讨论了DC/DC直流变换器的自启动、自激励电路的设计原理，对实际电路进行了制作和调试。
This paper introduces design principle of automatic switch on and automatic driver of DC/DC converter. The circuit is maked and adjusted.
讨论了DC/DC直流变换器的自启动、自激励电路的设计原理，对实际电路进行了制作和调试。
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