熔斷器的教程

　　電子產(chǎn)品已成為極其精確和快速的。為增加的組件的功能，那么他們的脆弱性。這是一個FPGA的損傷要比破壞更大功率電阻。電子工業(yè)在向電路提供清潔能源方面取得了很大進展，但仍有可能會造成潛在損害的尖峰。隨著這一點，總是有可能短的發(fā)展在一個電路，可能會導(dǎo)致過流條件，可能損壞設(shè)備。這就是簡單的融合進入方程。熔斷器要比整個電子設(shè)備便宜得多。通常，一個分量少于一美元的部件可以節(jié)省數(shù)千美元的其他設(shè)備。本文將介紹選擇保險絲的不同考慮，一些工業(yè)術(shù)語，以及不同熔斷器的應(yīng)用。

　　A fuse is a device that protects the rest of the circuit. It is typically an inline device that allows a certain amount of current to flow through it. If too much current is flowing， the fuse will literally melt causing an opening and breaking the current flow. Two of the largest electrical considerations for a fuse are the “Current Rating” and “Voltage Rating”。 The current rating is the maximum current that can flow through the fuse under normal conditions. Fuses will typically be de-rated at 25% to avoid nuisance blowing at 25?C. An example from an article titled “Fuseology” by Littelfuse goes on to use a 10 amp fuse for a 7.5 amp circuit at 25?C. The following equation shows how to find the current rating.