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Selective circuit breaker: individual circuit protection for factory systems. (Five Star: Product of the Month).
Designfax
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February 1, 2003|
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COPYRIGHT 2003 Nelson Publishing. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group.
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Classes in basic electricity usually include discussions on the difference between "parallel" and "series" circuits. The example teachers will cite is a set of Christmas lights -- how with the old-fashioned series lights, all the bulbs would go dark should one fail. From such a clear example, one would have expected that all the students would know not to design any system in series.
But there are always exceptions.
Many manufacturing lines and processes are employing 24 VDC power as a standard for sensors, actuators, field bus couplers and controls, with ...
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The papacy and canon law in the eleventh-century reform
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; ...magisterial analysis of the fate of the False Decretals in Rome since the 870's. This...1053, used excerpts from the Decretals in support of their conviction...materials, both authentic and false, found in the Decretum of Burchard...
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