Light Emitting Diode (LED) is a semiconductor light-producing unit. When an electrical current passes through the unique materials, there is a recombination of positive and negative charges resulting in the emission of photons, as light energy. This action is called electroluminescence. The color of the light is determined by the energy gap of semiconductor and [...]
Tag Archives | Electronics and Electrical
TROUBLESHOOTING
Troubleshooting electrical defects is a logical and systematic methodology employed by electricians experienced in equipment repair, electrical construction and electrical theory. How and why an electrical circuit works, or doesn’t work, is a vital key to problem-solving. Often, an electrician must get to the cause by eliminating what is not the cause…like any good detective; [...]
THE BID, JOB COSTS AND SPECS
Job costs and specifications are integral parts to any bid. Specs are how engineers build quality into a project by calling out the exact type items to be used, the manufacturers they want used, along with the catalog number of the products they want used. Engineers also use specifications to inform the electrician of different [...]
MAINTENANCE
Maintenance of electrical switch gear and electrical equipment comes in two categories: Reactionary and Preventive. Reactionary is very close to no maintenance at all, or so little maintenance that when equipment or components malfunction, you must drop everything and in crises mode, run to repair or replace. This maintenance program accounts for most of our [...]
UNDERWRITERS LABORATORIES/UL
Underwriters Laboratories (UL) works closely with the National Fire Protection Association and National Electrical Codes, in testing to make sure that any appliances, or pieces of equipment which use electricity, meet their standards. UL brings peace of mind to consumers. UL operates under its own authority. It is an independent not-for-profit, non-governmental organization, certifying products [...]
CAUSES OF ELECTRICAL ACCIDENTS
There are two groups of people who get into electrical trouble: 1. The Familiarity Breeds Contempt Group: This is the “we work with electricity all the time and we cut corners and do unsafe acts.” 2. The I Have No Idea What I’m Doing Group: But they do unsafe acts anyway. Unsafe Acts What is [...]
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