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Electric shocks occur all over the world. The number of annual worldwide electrical fatalities may exceed 47,000 people and must be reduced. Electrical fatalities are caused by contact with a charged object. Contact with a 35 V charged object is fatal. Such accidents occur when an insulating safeguard is not used. An insulating safeguard is sometimes not used because an insulating safeguard for high...
The lithium ion (Li-ion) battery market has undergone tremendous growth since its conception in 1990. Projections have indicated that the Li-ion battery market in the United States will top $9 billion in the next 3 years. Several factors including technical innovation, increased use of sophisticated consumer electronic gadgets and surge in high efficiency power sources for industrial applications...
Many telecom operators are attracted by the prospect of deploying energy-dense lithium-ion batteries but at the same time are aware of the large-scale recalls of laptop computer batteries and reports of problems with lithium metal polymer batteries in telecom outside plant applications. The publicity associated with such incidents is inevitably highly negative for both the battery manufacturer and...
Frank J. Sprague: I wish to refer to the tests which have been going on on the New York Central Railroad since the 20th day of February, a year ago, on so-called automatic train control. What is the object sought in train control? Simply to marry together the traffic conditions which exist on a railroad, no matter how indicated or governed, whether by manual signals or by automatic signals, with the...
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