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TODAY IN HISTORY

    RADIOACTIVE MEDICINE
    December 24, 1936 - Berkeley, California, U.S.A.

    The first radioactive isotope medicine was administered, Berkeley, Cal. When Ernest Lawrence, inventor of the cyclotron, recognized the possibilities for uses of nuclear isotopes in medicine, he persuaded his brother John to join the Berkeley Laboratory. John Lawrence started Donner Laboratory circa 1936. Treating a 28-yr-old woman with chronic leukemia, he administered a radioactive isotope of phosphorus-32 that had been artificially produced in a 37-in cyclotron. It was the first time that a radioactive isotope had been used in the treatment of a human disease as well as the start of a career-long contribution from John Lawrence. He became known as the father of nuclear medicine and his laboratory is considered the birthplace of this field.

    THE WORLD’S LARGEST SANTA IS UNVEILED
    December 24, 2008 - China

    A giant Father Christmas made of ice, which is claimed to be the world's biggest Santa has been unveiled in China. The 525 feet long sculpture is the centerpiece at the world-renowned ice festival in the city of Harbin, where temperatures drop to well below freezing in the winter. But sculptor Tang Guangjun said unseasonably warm temperatures and hazardous conditions had made it very difficult to carve the figure, which centers on an enormous face of Father Christmas, complete with flowing beard and hat. An estimated 800,000 tourists from around China are expected to visit the festival, which traditionally runs from mid-December to early February.

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RANDOM QUOTES

  • The wealth of the nation
    by Earth Day, Gaylord Nelson

    "...The wealth of the nation is its air, water, soil, forests, minerals, rivers, lakes, oceans, scenic beauty, wildlife habitats and biodiversity that'as all there is. That'as the whole economy. That'as where all the economic activity and jobs come from. These biological systems are the sustaining wealth of the world...."
  • Happiness
    by Thomas Jefferson

    "...Our greatest happiness does not depend on the condition of life in which chance has placed us, but is always the result of a good conscience, good health, occupation, and freedom in all just pursuits...."

RANDOM FACTS

  • More vehicles
    about Stolen On New Year's

    More vehicles are stolen on New Year's Day than any other holiday throughout the year. (So does that mean thieves are having their last fling before changing their ways or are they trying for a big score to start the New Year?) Harvard Medical School
    about Eyesight Myth and Fact

    Myth: Staring at a computer screen all day is harmful to the eyes. Fact: Spending the day staring at a screen can tire or strain your eyes, but it will not hurt them. Make sure lighting doesn't create a glare on your screen. When spending long periods at your keyboard, take a break now and then to rest your eyes to reduce fatigue. Also, don't forget to blink. Your eyes need to stay lubricated to feel comfortable.

Electric Fuses :

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ARTICLE INFORMATION :

Are you looking for a specific fuse? Do you want a slow acting fuse? Do want a fuse that activates quickly? Do you need to know about fuses? Check out this article to get more fuse information.

ARTICLE CONTENT :

An electric fuse is a current interrupting device that protects an electrical circuit. It is mounted within the circuit and is activated when excess current, which could damage the circuit, enters the circuit.

Fuses are used generally as a conduit between an electrical power source, and an electrical component arranged in an electrical circuit. They are designed for one time use only, hence, once it shuts down a device, it must be replaced.

Electrical fuses are part of the electrical systems in cars, trucks, motorcycles, boats and other type of vehicles. They function to stop the flow of electricity to a certain component of the system by making an open circuit, arising from an unsafe electrical condition.

There are three basic types of fuses. These are the slow blow, the fast acting fuses and the very fast acting fuses. The other terms for slow blow are time lag and time delay fuses or the TL for time delay fuses.

A major type of time delay fuse is the dual-element. It consists of a short circuit strip, spring connection and soldered joint. During current overload, the soldered joints get hot and start to melt. Then the spring shears the junction loose.

During short circuit, the short circuit element works to open the circuit. The slow-blow electric fuse allows a temporary and harmless rush of current to move into the circuit without breaking open. Rather it opens on the sustained overloads and short circuits. Slow-blow fuses are ideal for circuits with a transient surge of power. This lets current to continue flowing into the circuit at close to the fuse rating. This prevents the fuse from breaking open and having to be replaced. Usually, they are rated between 125% and 150% of the circuits? full load amperes.

If you are looking for fuses for home use, the TL fuses are the best choice. Not only are they medium duty; but they are the recommended fuses for home uses. The TL fuses uses an Edison base, while the SL fuses uses a Rejection base.

The fast acting fuses are also called S and T fuses. They are heavy duty time delay fuses used for circuits that have critical or high motor loads. An S or T electrical fuse is also used for circuits that have motors which cycle on and off more often like the sump pump. It features longer time delay than the TL fuse. The difference between S and T fuses are their bases. The T fuse uses an Edison base, while the S fuse uses a Rejection base.

The very fast acting fuses are also called mini breakers. They are able to convert a fuse to a circuit breaker. A mini breaker electric fuse is a retrofit circuit breaker fuse that screws into an Edison base fuse socket. It is excellent as it converts a fuse into a push-button circuit breaker.

The mini breaker electric fuse has a little push button which pops out. Whenever the circuit is overloaded, you just need to reset the fuse by pushing a button. These types of fuses are designed to meet your needs.

ARTICLE SPONSOR :

  • Relectric
    We carry bussmann fuses. We have time delay fuses. We carry the ceramic tube fuse type.

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  • Rudy SilvaOwner :
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  • November 30, 2014Date Added :
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