2. 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.

3. 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.

4. 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

5.  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…

6.  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:

7. 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 radial large value electrolytic  Roll condensers capacitive trimmers tuning condenser

9.  Calculate the resulting capacity of these series ordered condensers.  Name the types of condensers.

10.  Calculate the resulting capacity of these parallel ordered condensers.

11.  Václav MalinaPoznáváme elektroniku I.  Adrian Schommers Elektronika tajemství zbavená. ISBN 3-92608-32-5