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Anglicky v odborných předmětech "Support of teaching technical subjects in English “. Tutorial : Mechanic - electrician Topic : Technical training II. class Passive components – condenser Prepared by: Melichařík Lubomír.
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Anglicky v odborných předmětech"Support of teaching technical subjects in English“ Tutorial: Mechanic - electrician Topic: Technicaltraining II. class Passivecomponents – 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.
PASSIVE COMPONENTS – CONDENSER 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.
CONDENSER 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
PRINCIPLES AND CHARACTERISTICS OF A CONDENSER • 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…
CAPACITY OF A CONDENSER • 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): • The plate condenser with a capacitance C can store and electric charge: • Q = CU ( Charge× Voltage) • Q = It (Current× Time) • The unit of capacity is the farad in the system SI is:
SYMBOLS AND TYPES OF CONDENSERS Symbols for condensers: • -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. • Types of condenser • Electrolytic axial electrolytic radiallarge value electrolytic • Roll condensers capacitive trimmerstuning condenser
Activites for students– mandatory slideTask, test, questions … . • Calculate the resulting capacity of these series ordered condensers. • Name the types of condensers.
Activities for students– mandatory slideTask, test, questions … . Two slides are best. • Calculate the resulting capacity of these parallel ordered condensers.
Bibliography • Václav Malina Poznáváme elektroniku I. • Adrian Schommers Elektronika tajemství zbavená. ISBN 3-92608-32-5