we are winding up
81Brushless DC electric motor — A microprocessor controlled BLDC motor powering a micro remote controlled airplane. This external rotor motor weighs 5 grams, consumes approximately 11 watts (15 millihorsepower) and produces thrust of more than twice the weight of the plane …
82Mechanical watch — The movement of a Russian watch A mechanical watch is a watch that uses a mechanical mechanism to measure the passage of time, as opposed to modern quartz watches which function electronically. It is driven by a spring (called a mainspring) which …
83Electromagnet — An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric current. The magnetic field disappears when the current is turned off. Electromagnets are widely used as components of other electrical devices,… …
84Tap (transformer) — This article is about tappings in transformers. For other uses, see Tap. A transformer tap is a connection point along a transformer winding that allows a certain number of turns to be selected. This means, a transformer with a variable turns… …
85Montgomery Canal — milepost Former names Montgomeryshire Canal/Llanymynech Branch of the Ellesmere Canal Modern name Montgomery Cana …
86Vector group — A Vector group is the International Electrotechnical Commission (IEC) method of categorizing the primary and secondary winding configurations of three phase transformers. Within a polyphase system power transformer it indicates the windings… …
87Copper wire and cable — Copper has been used in electric wiring since the invention of the electromagnet and the telegraph in the 1820s.[1][2] The invention of the telephone in 1876 proved to be another early boon for copper wire.[3] Today, despite competition from… …
88Three-phase electric power — This article deals with where, how and why three phase is used. For information on the basic mathematics and principles of three phase, see three phase. Three phase electric power is a common method of alternating current electric power… …
89Tesla coil — at Questacon the National Science and Technology center in Canberra, Australia Uses Application in educational demonstrations, novelty lighting, as well as music Inventor …
90Tris's Book — Infobox Book | name = Tris s Book image caption = Cover featuring Tris battling pirates who are trying to destroy the only home she has ever known. author = Tamora Pierce country = United States language = English series = Circle of Magic genre …
