Yeah, some devices have protected diodes, which can use the reversed polarity DC connections.
By doing so, no matter which direction DC connections, straight polarity or reversed polarity, the device s won’t be burned out.
	                         
    Technical ArticleWhy do some devices use reversed polarity DC connections?Time:2019-03-05 11:16:39 Click:  
                      Yeah, some devices have protected diodes, which can use the reversed polarity DC connections. 
 By doing so, no matter which direction DC connections, straight polarity or reversed polarity, the device s won’t be burned out. 
 
 
	                          
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