Download AVOP-ELEKTRO-MEL-003

Tutorial: Mechanic - electrician
Topic: Technical training
II. class
Passive components – condenser
Prepared by: Melichařík Lubomír
Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002
je spolufinancován Evropským sociálním fondem a státním rozpočtem České republiky.
Condenser
Condenser
-passive electro technical component
-used in electrical circuits for temporary
storage of electrical charge – electric energy
-the basic property for the evaluation of the
condenser is its electrical capacity
-technically the condenser is determined by
the maximum allowed voltage, dielectric type
and design of the terminals.
Electrotechnical schematic symbol:
Schematic symbol of the condenser-ceramic, rolls
Schematic symbol of electrolytic condensers
Schematic symbols of variable – tuning condenser
Schematic symbol the adjustable condenser – capacitive
trimmer
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The principle of a condenser
-consists of two conductive plates (electrodes)
separated by a dielectric
-on each of the plates is fed electric charges of
opposite polarity
Basic properties of a condenser
-capacity
-maximum allowed voltage
-quality factor
-other properties such as price, weight, durability,
thermal stability, shape…
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Capacity of a condenser
Capacity depends on the area of the plates, the mutual distance between the
plates themselves and the dielectric permittivity between the plates (applies
to the plate condenser):
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The plate condenser with a capacitance C can store and electric charge:
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Q = CU ( Charge × Voltage)
 Q = It (Current × Time)
The unit of capacity is the farad in the system SI is:
Symbols for condensers:
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-for colour coded electronic components we use the international code EIA-RS-279, and the type of
condenser should also be considered to determine the values and tolerances to identify performance,
the maximum voltage, and for ceramic condensers the thermal parameters.
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Types of condenser
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Electrolytic axial
electrolytic radial
large value electrolytic
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Roll condensers
capacitive trimmers
tuning condenser
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Calculate the resulting capacity of these
series ordered condensers.
Name the types of condensers.
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Calculate the resulting capacity of these
parallel ordered condensers.
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Václav Malina
Adrian Schommers
Poznáváme elektroniku I.
Elektronika tajemství zbavená.
ISBN 3-92608-32-5