A fuse is a type of safety device that restricts the current in a circuit. As a consequence, it prevents electrical circuit damage and potential fires. Fuses are commonly seen in electrical products. Outlets sometimes have fuses as do some computer power supplies. Computer data storage devices such as hard drives often include one or more integrated circuits with control circuitry that requires maintenance-free operation during periods when excess current may cause damage to those components.
The purpose of a fuse is to protect electrical components from damage due to overcurrent conditions. Fuses are usually designed to open quickly to prevent any possible damage to other parts of the circuit. If a fuse does not open after being exposed to an overload condition for several seconds, it should be replaced because this could mean that it has sustained damage preventing it from opening under normal conditions. When replacing fuses, make sure that you don't replace one fuse with another make of the same model number. This could lead to damaged wiring inside your home office equipment causing it to fail prematurely.
Fuses come in two main types: thermal and magnetic. Magnetic fuses can only be removed by pulling them out, while thermal fuses can be pulled out easily with a pair of wire cutters. Which type of fuse you need depends on how you plan to maintain the integrity of the circuit it's part of.
An electric fuse is a safety device that limits the current flowing through an electric circuit. The purpose of a fuse is to protect the electric circuit and the electric equipment attached to it from harm. Fuses are used in electricity distribution systems as well as inside appliances such as hair dryers, heaters, and vacuum cleaners.
Electric fuses are designed to break, or "blow," when too much current flows through them. The voltage across the fuse causes it to heat up, which in turn causes the glass or ceramic tube inside it to shatter, thereby opening the circuit and allowing the current to flow through a new path.
After a fuse has blown, any further attempt to connect a power source to it will result in a short circuit and even greater damage to other parts of the circuit or to other devices connected to it. A person should never try to repair a blown fuse by pulling out the burned-out piece of wire or fiberboard. This could cause more damage and may even start a fire.
Fuses were first made from thin strips of metal all wound up together like a clock spring (this is why they're called "clock springs").
A fuse is an electrical safety device that protects an electrical circuit against overcurrent. Its main component is a galvanized wire with an antimony tin alloy that explodes (melts) when too much current travels through it, causing the current to be interrupted. A fuse may burn out naturally after several years of use, or it may need to be replaced due to damage from excessive heat or mechanical stress. Fuses are available in various sizes for different current loads. The term "fuse box" refers to a metal enclosure for storing and protecting multiple fuses.
The word "fuse" comes from the French word foce meaning "force". In early times, people used candles as a source of light at night. If these candles were not extinguished in time, they would eventually blow out, often while someone was trying to read a book by its dim glow. This could cause injury or death if someone was sleeping in the same room as the candle.
To prevent this type of accident, people started using I-beams as structural supports underneath their houses. These I-beams had holes drilled into them, with cotton strings running through the holes. When the string burned down to its end, it signaled the end of its journey and prevented further electricity from flowing through it. These were called "candleholders" and you can still see some remaining in public buildings today.