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Automotive dictionary (encyklopedia)

Dictionary of terms and abbreviations for cars (automobiles), motorcycles (bikes),
bicycles, boats, engines, machines, machining and car fixing.

# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Ignition coil

A pulse transformer which is a part of the ignition system. It receives a small amount of electrical voltage from the battery and steps up the low "primary" voltage and amplifies it into a big jolt of voltage of about 20,000 volts, and sends it to the spark plugs via the distributor. It is made of two windings and a core of iron. The primary coil has about 200 turns of relatively heavy wire. The secondary windings may have as much as 22,000 windings of fine wire. As electricity travels through the primary winding, it produces a magnetic field in the coil. When the points open, the magnetic field collapses and the movement of the magnetic field induces current in the secondary windings of the coil. The voltage is stepped up in proportion to the ratio of secondary to primary turns and the distributor directs this high voltage to the spark plug. Also called just "coil".
See also exciter coil, field coil, four-spark ignition coil, multi-spark ignition coil, multiple-spark ignition coil, single-spark ignition coil
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The Varying Drivers License Requirements Around the World

Minimum driving ages, the number of passengers young drivers can have with them at any time, the times of day that drivers under the age of 18 can drive…

These all vary depending on where young motorists are driving. They vary, even, across the United States.

For instance, in Maine, motorists under the age of 18 aren’t allowed to have any passengers with them as they drive for the first 180 days after they obtain their licenses. In Alabama, motorists under the age of 18 can have one passenger with them.

And that’s just one example of the differences in driving license requirements from one part of the country to the next. The differences are even more pronounced when comparing one country to another. Minimum driving ages vary widely across the world. While most states in the United States allow youngsters to earn their learner’s permits at the age of 15, many other countries require their residents to be much older before they get behind the wheel of a car.

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