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ፌብሩዋሪ 05, 2018

ኤሌክትሮይክ capacitor

የአቅም (septum) ባህሪዎች

Capacitor is a container for storing electric charge. It is composed of two pieces of metal, which is close to the plate, and the middle is separated by the insulation material. According to the insulation material, can be made into a variety of capacitors. Such as: Mica, ceramic, paper, electrolytic capacitor. In the construction, it is also divided into fixed capacitor and variable capacitor. The capacitor has a great effect on the DC resistance, that is, the capacitor has a DC effect. Capacitors for alternating current resistance is affected by the influence of the frequency of the alternating current, i.e., the same capacity of capacitors of different frequency alternating current presents different capacitance. Why are these phenomena? This is because the capacitor is dependent on its charge and discharge function to work, the power switch S is not on the. Two sheet metal plates and other common metal plates are not charged. When the switch S is closed, the free electrons on the positive plate of the capacitor are attracted by the power supply and push it to the negative plate. Since there is an insulating material between the two plates of the capacitor, the free electrons that are running from the positive plate are piled up on the negative plate. Because the electronic positive plate decreases with positive, negative plate was gradually increased and the negatively charged electron.

There is a potential difference between the two plates of the capacitor. When the potential difference is equal to the supply voltage, the charging of the capacitor is stopped. At this point, if the power is cut off, the capacitor is still able to maintain the charge voltage. If we connect the two plates with a wire, the electronic will pass through the wire and return to the positive plate. The capacitor is back to the neutral state, and the wire is not current. Add in the two plates of a capacitor AC high frequency, increase in the number of charging and discharging the capacitor; charging and discharging current is enhanced; that is, capacitors for high frequency alternating current inhibition decreases, small capacitance, vice capacitor of low frequency alternating current capacitance. For the same frequency of alternating current. The capacity of the capacitor capacitance is larger, smaller, smaller capacity, greater capacitance.

Parameters and classification of capacitors

In electronic products, capacitors are essential electronic devices, which acts as a smoothing filter, the power supply decoupling, the bypass of AC signals, and the AC coupling of AC signals in electronic devices. Because of the type and structure of the capacitor is more, we need not only to understand the performance of various types of capacitors and general characteristics, but also to understand the advantages and disadvantages of various components in a given application, as well as mechanical or environmental constraints, etc.. Here will be the main parameters of the capacitor and its application to do a simple description.

1. Nominal capacity (R C). Capacitance value of capacitor. The capacitance of mica and ceramic dielectric capacitors is low (about 5000pF below); the capacitor in paper, plastic, and some ceramic medium is in the middle (about 0.005uF~1.0uF); the capacity of the electrolytic capacitor is large. This is a rough classification method.

2. Category temperature range. The ambient temperature range for which the capacitor is designed for continuous operation. The range depends on the temperature limit of the corresponding category, such as the upper limit of the category, the lower temperature, the temperature of the lower temperature, the highest temperature of the rated voltage.

3. ደረጃ የተሰጠው ቮልቴጅ (RU)። በዝቅተኛ እና በዝቅተኛ የሙቀት መጠን እና በስም የሙቀት መጠን መካከል ባለው በማንኛውም የሙቀት መጠን ከፍተኛው የዲሲ ቮልት ወይም ከፍተኛው የኤሲ ቮልዩም ወይም የካፒታተሩ ምት ቮልት ያለማቋረጥ ሊተገበር ይችላል ፡፡ በከፍተኛ የኤሌክትሪክ መስክ እና ጊዜ ውስጥ ጥቅም ላይ የዋለው ካፒተር ፣ ለኮሮና ውጤቶች ትኩረት መስጠት አለበት ፡፡ ኮሮና የሚመነጨው በዲኤሌክትሪክ / በኤሌክትሮል ንብርብር መካከል ባሉ ክፍተቶች በመገኘቱ ሲሆን በመሣሪያው ላይ ጉዳት ከሚያስከትሉ ጥገኛ ምልክቶች በተጨማሪ የካፒታተሩ የሞተር ኤሌክትሪክ ብልሽትን ያስከትላል ፡፡ በኤሲ ወይም በሚወዛወዙ ሁኔታዎች ስር ኮሮና በተለይም ለመከሰት የተጋለጠ ነው ፡፡ ለሁሉም capacitors ፣ የዲሲ ቮልት እና የኤሲ ፒክ ቮልት አጠቃቀም መረጋገጥ እና ከካፒታተሩ ከተገመተው የቮልት መብለጥ የለበትም ፡፡

4. የጠፋ ታንጀንት (ቲጂ ዴልታ) ፡፡ በ sinusoidal voltage እና ድግግሞሽ ደንብ ውስጥ የኃይል መጥፋት ታንጀንት በ capacitor የተከፋፈለ የኃይል መጥፋት ፡፡ በተግባራዊ ትግበራ ፣ መያዣው ንፁህ አቅም አይደለም ፣ በዚያ ውስጥ ተመሳሳይ የመቋቋም ችሎታ አለ ፣ በቀረበው ስእል ላይ እንደሚታየው ቀለል ያለ ተመጣጣኝ አቻው አለው ፡፡ ለኤሌክትሮኒክ መሣሪያዎች አር ፣ አነስተኛው የተሻለ ነው ፣ ይህ አነስተኛ የኃይል መጥፋት ፣ የተካተተው አንግል እና የኃይል እስከ አነስተኛ አቅም ይጠይቃል ፡፡

5. የ 5 capacitors የሙቀት ባህሪዎች። ብዙውን ጊዜ የሚጠቀሰው በ 20 ላይ ካለው የማጣቀሻ ሙቀት አቅም መቶኛ ነው ፡፡

6. የአገልግሎት ሕይወት. በሙቀቱ መጨመር የካፒታተሩ የአገልግሎት ዘመን ይቀንሳል። ዋናው ምክንያት የሙቀት መጠኑ የኬሚካዊ ምላሹን በማፋጠን እና መካከለኛውን በጊዜ እንዲዋረድ ስለሚያደርግ ነው ፡፡

7. Insulation resistance. As the temperature rises, the temperature rises, so the insulation resistance will be reduced. Capacitor includes two kinds of fixed capacitor and variable capacitor. The fixed capacitor can be divided into the mica capacitor, ceramic capacitor, paper / plastic film capacitor according to the dielectric material.

Category and symbol of capacitance

There are also many types of capacitors, in order to distinguish, and also commonly used to express a number of Latin letters of capacitance. The first letter of the C said the capacitor, the second letters of the material, the third letter after the shape, structure, etc.
Identification of polarity of electrolytic capacitor
Do not know the polarity of electrolysis

ኤምአይሲ በቻይና ውስጥ የኤልዲ መብራት እና የፀሐይ ብርሃን መብራቶች ትልቁ አምራቾች ፣ አቅራቢዎች እና ላኪዎች እንዲሁም በኃይል ቆጣቢ መፍትሔዎች ውስጥ ግንባር ቀደም አቅራቢ ነው ፡፡
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