Electrical fuse burning with increasing current

[imfree707]

Aah nice, a slow kill!

[RODALCO2007]

Great video

[LauxHawk]

Hello,

I am new to electronics. I am working on making a 12V/5V combo power supply. I need a 5A fuse. I found one on mouser. Do you recommend I use a fuse block or a fuse clip? How do I hook my power wire up to the fuse clip?

Thanks.

[sabrinasita]

can you please send me the download link??

[Corey497]

slo-blo

[VideyoJunkei]

a fuse will blow at its rated current, but it will take some minutes...increasing current shortens the time very fast!

[XCar15]

What voltage power source was this connected to? Great video by the way

[prornetheus]

awesome demostration of how a fuse works. but what program do you use to picture in picture?

[guayhansen]

I used Ulead Videostudio.

[joeylawn36111]

If it was rated at 600mA, why did it blow at 1.5A???

[guayhansen]

That is a good question! We were stumped at first but a simple search via Google and you'll realise fuses have built-in allowances in them to prevent 'unwanted' burning due to spikes in current flow. Hence it is important to choose the correct type (and not only rating) of fuse to protect your equipment. Apparently the fuse we use have rather large allowance of 1.5x the rated value.

[DJGahann]

Good point. Don't forget to mention also fuses are rated slow or fast blow. A slow blow will typically filter out a quick spike but blow on longer overloads, while as a fast blow will cut out immediately.

When it comes to automatic circuit breakers the whole thing becomes a bit more complicated with several characteristics.

[YCbCr]

What was the rating if you remember?

[guayhansen]

It is rated 0.6A if i recall correctly.

[StephenKuma]

im no science guy as u will see from my question but - what does a fuse actually do?

[RideTheSpiral11235]

It prevents short circuiting or too much amperage in a circuit (i.e. causing it to burn, melt, or electrocute someone) It does this by having a high resistance so it burns and breaks the current easily, stopping any electron flow.

[StephenKuma]

thanks very much for taking the trouble. i really should have researched it, sounds less complicated than i imagined

[Ibemad]

Well, it isn't really that complicated, basically it's just a wire of varying diameter in a glass tube.

[qazxsw21000]

@StephenKuma I is probably the only thing designed to fail under certain conditions. You can overtake it by voltage or current. If you exceed any of these, it will break down inside. It is used to protect anything inside a circuit.