Tutorial: Mechanic - electrician Topic: Technical training II. class Passive components – coils...
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- Tutorial: Mechanic - electrician Topic: Technical training II.
class Passive components coils Prepared by: Melichak Lubomr Projekt
Anglicky v odbornch pedmtech, CZ.1.07/1.3.09/04.0002 je
spolufinancovn Evropskm socilnm fondem a sttnm rozpotem esk
republiky.
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- Coil Is an electrical component used in electrical circuits:
-to create a magnetic field electrical current -serves as an
electromagnet -induce a variable magnetic field in an electric
current -as an inductor (inductance bearer).
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- Electrotechnical schematic symbol: Schematic symbol of coils,
inductance, chokes Schematic symbol of coils, variable inductance,
tuning coils Schematic symbol of coils with a tap Schematic symbol
of coils with a magnetic core Schematic symbol of coils with a
ferrite core
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- Construction of coils -consists of wire wound on an insulating
supporting frame -winding can be single-layer or multi-layer -the
wire-wound may be self-supporting no skeletons. -wire in the coil
has to have the lowest resistivity, that the coil avoids large heat
losses -most commonly used material is copper -to increase the
magnetic properties insert a core inside the coil
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- Parameters of coils -the basic unit to which the multiplier is
applied is the inductance microhenry H. -the number of turns
-geometric properties (number of turns per unit length, length,
section content) -inductance expresses the magnitude of the
magnetic flux in a unit of electric current -maximum load- the
highest possible power output of a current friendly electrical coil
-maximum current the largest current that can pass through the
coil.
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- Types of condensers air toroids, ferrite antenna, vf coils a
others coils
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- Calculate the resulting inductance of the series connection of
these coils. Name the types of coils
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- Calculate the resulting inductance of the parallel connection
of these coils. Name the coils used in practice.
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- Vclav MalinaPoznvme elektroniku I. Adrian Schommers Elektronika
tajemstv zbaven. ISBN 3-92608-32-5