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More heavy-duty printers can print much faster; for example, a Sinfonia Colorstream S2 dye-sublimation printer can print a 4x6 in (10x15cm) photo in as little as 6.8 seconds, and a Mitsubishi CP-D707DW is known to have a faster print of under 6 seconds for similar size. In all cases, the finished print is completely dry once it emerges from the ...
A typical low-tension coil (reproduction) used in the ignition system of an ignitor-fired engine. A low-tension coil is an electrical device used to create a spark across the points of an ignitor on early-1900s gasoline engines, generally flywheel engines, hit-and-miss engines, and other engines of that era.
English: A functional diagram showing the flow of propellant through an RS-25 engine. Very high flow rates are needed in the main combustion chamber, so the energy to achieve this is generated in upstream combustion "pre-burner" chambers that generate a partial burn to drive the high pressure turbopumps on both the fuel and oxidizer sides.
An ignition coil is used in the ignition system of a spark-ignition engine to transform the battery voltage to the much higher voltages required to operate the spark plug(s). The spark plugs then use this burst of high-voltage electricity to ignite the air-fuel mixture. The ignition coil is constructed of two sets of coils wound around an iron ...
This process is repeated continuously, creating a "shower of sparks." (Right) Booster coil components. The booster coil is separate from the magneto and can generate a series of sparks on its own. Current flow through the primary coil sets up a magnetic field about the coil that attracts the movable contact point, breaking circuit is broken.
(If the engine was rotated while examining the wave-form output of the coil with an oscilloscope, it would appear to be AC. However, since the charge-time of the coil corresponds to much less than a full revolution of the crank, the coil really 'sees' only DC current for charging the external ignition coil.)
Since the early 2000s, many cars have used a 'coil-on-plug' direct ignition system, whereby a small ignition coil is located directly above the spark plug for each cylinder. This design means that high-voltage electricity is only present in the small distance between each coil and the spark plug.
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