overvoltage

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not to mention.. someone in the thread stated something to the effect: "if it has a fuse.. that's what it's there for.." I wouldn't make fun of them if they ASKED if that is what it's for. But when a person claims to know something..
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Purpose of a fuse: to protect human life. First an appliance is damaged. Then the resulting excessive current threatens to create a fire. So the fuse blows to disconnect damaged equipments.
The numbers. Electronics can be damaged in microseconds. Fuses take milliseconds to blow. The fuse does not protect transistors. The fuse protects human life after damage has occurred. If no numbers, then suspect junk science reasoning.
Many power supplies have no fuses. When power supply's output is shorted, then what avoids a fire or damage? Electronic circuits inside a power supply make that fuse unnecessary.
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On Fri, 01 Jun 2007 12:13:27 -0700, w_tom wrote:

This is essentially true. An side effect though is to protect equipment from permanent damage. However, this side effect is usually only employed on higher quality merchandise.

Fuses definitely do not protect electronics, but they can protect circuit board traces.

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