Essays Tagged: "Cordless"

History of the Electric Drill- From Corded to Cordless.

From Corded to Cordless.From the construction site to the home, the electric drill is a commonly used tool in today ... inary drill but with much greater efficiency. Then in 1895, German, Wilhelm Fein invented the first cordless (DC) electric drill. A cordless electric drill is a type of electric drill which uses recha ... e early 1900’s that the heavy steel exterior was replaced with the much lighter aluminum.Early cordless (DC) drills used Nickel-Cadmium (NiCd) batteries. NiCd batteries have a limited lifespan, s ...

(2 pages) 15 0 3.7 Apr/2008

Subjects: Science Essays > Engineering