Fuse CONFUSE

keyboardcowboy · 09-19-2009, 07:47 AM

recently my laptop power adaptor died,when i tested the external fuse (5A-250V) it was blown not knowing that the bridge rectifier has shorted i replaced the fuse with a wire and plugged it back in,there was a spark and the adaptor died again.When i opened the adaptor i found another fuse with a rating of 3.15A-250V which was also blown..Now the confusion is that shouldn't the internal fuse have blown out first due to lower rating..If it had blown first there wouldn't have been a spark when i replaced the external fuse with a wire...Both fuses are in series.

09-19-2009, 07:47 AM	#1
keyboardcowboy Member Join Date: Apr 2006 Posts: 67	Fuse CONFUSE recently my laptop power adaptor died,when i tested the external fuse (5A-250V) it was blown not knowing that the bridge rectifier has shorted i replaced the fuse with a wire and plugged it back in,there was a spark and the adaptor died again.When i opened the adaptor i found another fuse with a rating of 3.15A-250V which was also blown..Now the confusion is that shouldn't the internal fuse have blown out first due to lower rating..If it had blown first there wouldn't have been a spark when i replaced the external fuse with a wire...Both fuses are in series.

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