Wednesday, March 13, 2013

What is a capacitor ?


Between conductor and an insulator composed of binary , and when necessary, which can store electrical charge of dumping the sistemkondansatör
Unit of potential difference of one volt , so the size indicates how many being held load Coulomb coulomb / volt. It specifically Farad ( F ) is called . Capacity C ( F ) is a capacitor V ( V ) to the difference of potential load: Q = CV Coulomb ( C ) is.
Conductors , capacity can be increased by closer to the ground or to each other . Such a system of two conductors is called the condenser . Large dielectric constant insulating material placed between conductors connected to obtain large-capacity capacitors . This armature conductors , or plates, yalıtkana called the dielectric . Dielectric solid, liquid or gas can .
Several capacitor , a capacitor is again connected parallel or in series is obtained. This equivalent capacitor capacity , the capacities of the capacitors which form it can be calculated .
Capacities C 1 , C 2 , C 3 ... series connected capacitors that are equivalent capacity , 1 / C = 1 / C 1 +1 / Q 2 +1 / C 3 + ... is the correlation . The equivalent capacity in parallel connection , the C = C 1 + C 2 + C 3 + ... calculated as . As can be seen , the equivalent capacity of serially connected capacitors is reduced. In case of parallel connection grow.
Leyden Bottle is the oldest form of capacitor . This tool is still used where heavy electrical discharges required . Modern metal and dielectric capacitors mutual many times while wrapped in sheets or rolls consist of thin metal sheets, and waxed paper . Adjustable oscillator circuits, radio and other dielectric capacitors are used in the air . But depending on the size of the electrolytic capacitors can be achieved very high capacities . Capacitors used places: Radio and TV sets , telephones, Komputer , telegraphic , electronic devices , such as radar , telecommunication networks are used . In addition to start- starter to work as a single-phase motors , photo- flashes , and in particular the binding of radio - frequency systems, power supplies used in electronic devices .
Capacitors with a very wide range of applications in electronic devices (or capacitors ) There are two types : fixed , adjustable . Fixed capacitors also divided into two groups : electroplating , electrolysis . Number of fixed capacitor is produced , regulated species is very high.
All capacitors , and resistors structures are the indiktanslar . These undesirable characteristics , limits the usage of capacitors .
electroplating capacitors
Capacitors, the capacitance per unit volume electroplating , electrolysis kondansatörlerinkinden high. Capacitor and the capacitor is filled with fluid continues as long as the process of electrolysis . Tantalum or aluminum plates , electroplating capacitors plus plate ( anode ) is used. Anodic oxidation process, sometimes referred to as oxidation . The negative plate (cathode ) is usually copper. Electrically conductive electrolytic best real insulating oxide layer.
Electronic capacitor manufacturers prepare mixtures . But usually either acids or glycol borate salt solutions such as sulfuric acid is used .
electrolysis capacitors
Only electrolysis capacitor paper, film , mica and ceramic ones are important. Species and mica glass ceramic used in the past as well as some species disappear , even if mica and paper capacitors, film capacitors used in place of thought. Mika is a course dielektriktir ( insulator ) . Migrating feature is very low, so the resistance is high. Silver coated on mica or mica capacitors or between layers are formed by placing the tin foils .
adjustable capacitors

Adjustable capacitors , ceramic insulators are used sometimes , but usually air or space is utilized as a dielectric . These capacitors into two main groups . Tone and setting . Tone capacitors , radio ton was given this name because they are used settings .

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