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    Speaker Cones Essay

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    the speaker can handle. High power performance can create heat of around 250°C(Langford-Smith, 1957, p. 835) hence the need for a metal chassis. It helps to dissipate heat and is sufficiently stiff. Another choice has to be made in choosing a stamped or cast metal basket. The latter tends to be more precise and maintains its stability. Aluminium cast frames are usually chosen for large woofer cones which have to deal with heavy magnets. On the one hand, the chassis has to be as strong as possible but on the other hand it must not influence speaker cone movement. Therefore it needs to be as open and durable as possible. Well-vented design assures heat radiates away from the voice coil. The last factor is self-resonance. To counter this the chassis has to be acoustically dampened. 1.6. Voice coil…

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    Tesla Coil Essay

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    In essence, Tesla coils are a high-voltage, resonant transformer circuits. They consist of the six major components (Behrend 1), namely: Primary transformer Tank capacitor Spark gap Primary coil Secondary coil Toroid Figure 1: Tesla coil (diagram) A primary transformer is a step-up transformer that takes the line voltage of the AC source and steps it up to a range between 12 kV and 50 kV at 60 Hz (Johnson 4). The efficiency of this transformer is largely dependable on the construction…

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    tiptoed into the lab, wondering what kind of experiment was going on, and found himself in an organized mess. Beams of light, dust particles floating lazily within, streamed through the windows constituting the outside wall of the room, and warmed a workbench covered in pencil sketches, machine parts and the head of a sleeping mechanical rooster-man. Approaching carefully, Rex was slightly disappointed to find that what he at first thought was a cyborg chicken-human was actually a regular guy…

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    I was crying uncontrollably as my mother entered my bedroom. I was a mere two years old, so I had no thought of what was happening. All I could see is my mother with a disturbed look on her face looking at me. No one knew what was happening, was I going to die? We went to the hospital and the doctor realized that i had discolored veins. I had blood poisoning. I was born on February 1st, 2002 the first child of my parents. My full name is Austin Thomas Richardson, however my name came from many…

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    If your AC starts blowing hot air it may be due to the fact that it is freezing up. The coil is an important part of cooling your house up. The coils works by taking the warm air from your home and releasing them outside. If the coils in your AC unit become too cold they can freeze up. When your coils are frozen the ice can cause blockages, this results in you AC unit to run without cooling the home, whilst using a lot more electricity than usual. Why Do the Coils Continually Freeze Up? One…

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    Flexi-Coil Ltd: Case Study

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    INTRODUCTION Flexi-Coil Ltd., a division of CNH Global, is Canada's largest farm implement manufacturer and has become a key employer in the Saskatoon area since its establishment in 1952 by the farming brothers Emerson and Kenneth Summach. [1,2] In 1997, Flexi-Coil sold 35% of its market shares to New Holland Agriculture. In 1999, New Holland became a brand of CNH Global. [3] Later, in the same year, CNH Global completed the purchase of the global Flexi-Coil business. [2] In 2013, CNH…

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    Nikola Tesla Abstract

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    Paulo Lúcio Aquino, a research in order to analyze and try to fully understand Nikola Tesla, building several of his experiments, including the Tesla Coil, radio and the wireless transportation. “Innovate Tesla” is an ongoing project financially supported by the Shelter Foundation of Rio de Janeiro (FAPERJ) that has been awarded in state-level expositions of technology and science…

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    Futon Mattress Case Study

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    The mattress has 15-gauge pocket coils and offers you comfortable seating. The manufacturer has constructed it with different polyester layering placed between the coils and cover. If you have a back issue, the futon is ideal for a relaxing sleep. Features: • Certified: Green Foam Certified • Coil Material: 480 tempered steel • Foam: Pressure relieving comfort foam with 15-gauge pocket coils • Material: Cotton and Polyester • Sizes: Single to King • Sold: Excluding stand • Thickness:…

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    The entire system is controlled by a microcontroller which switches from charging the battery and powering the car, or to just powering the car. To transmit power to the car, two copper coils were used. One coil, called the transmitting coil, simulates a coil in a pad placed on a street. The other coil is in the car, called the inductor coil. The transmitting coil has an oscillating electric current, created by the ZVS driver circuit, flowing through the coil. This creates a magnetic field.…

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    Ugly Mug Making Essay

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    rolled into a coil. To make a coil, an even amount of pressure is applied to the ball of clay, moving the hands back and forth like a rolling pin. Once this step has been done for a few seconds a snake-like coil will start to form. The coil needs to be continually rolled until it is about the thickness of a pointer finger. However, the moisture in the clay will be absorbed by the skin, which makes the clay harder to work with, and it will start to crack the more it is worked. A spray bottle…

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