Film capacitor:
Depending on the medium, there are many types of capacitors, such as electrolyte capacitors, paper capacitors, film capacitors, ceramic capacitors, mica capacitors, and air capacitors. However, the most frequently used in audio equipment are electrolytic capacitors and film capacitors. Electrolytic capacitors are mostly used in places where large capacitance is required. For example, the filter capacitor of the main power supply is used for storing electrical energy in addition to filtering. Thin film capacitors are widely used in analog signal cross-linking, power supply noise bypass (reverse cross-linking) and other places. A film capacitor is a capacitor with a metal foil as an electrode, and a plastic film such as polyethylene, polypropylene, polyvinyl or polycarbonate, which is overlapped from both ends and wound into a cylindrical structure. And according to the type of plastic film, they are also called polyethylene capacitor (also known as mylar capacitor), polypropylene capacitor (also known as pp capacitor), polystyrene capacitor (also known as ps capacitor) and polycarbonate capacitor.
The film capacitor has many excellent characteristics, so it is a capacitor with excellent performance. Its main equivalences are as follows: non-polarity, high insulation resistance, excellent frequency characteristics (wide frequency response), and low dielectric loss. Based on the above advantages, film capacitors are widely used in analog circuits. Especially in the part where the signal is connected, capacitors with good frequency characteristics and extremely low dielectric loss must be used to ensure that the signal is transmitted without too much distortion. Among all plastic film capacitors, the characteristics of polypropylene (pp) capacitors and polystyrene (ps) capacitors are the most significant. Of course, the prices of these two capacitors are relatively high. However, in recent years, in order to improve the sound quality of audio equipment, the parts materials used have become more and more advanced, and the price is not the most important consideration, so in recent years, the frequency and number of pp capacitors and ps capacitors used in audio equipment have also increased. The higher. Readers can often see the equipment of XYZ brand, claiming how many pp-quality capacitors or PS-quality capacitors of XYZ brand are used as an endorsement in sound quality, the reason is here.
The usual film capacitors are manufactured by overlapping metal foils such as aluminum as electrodes and plastic films and winding them together. But in addition, there is another manufacturing method for film capacitors, called metallized film (metallized film). Its manufacturing method is to vacuum-deposit a thin layer of metal on the plastic film as an electrode. In this way, the thickness of the electrode foil can be omitted, and the volume per unit capacity of the capacitor can be reduced. Therefore, it is easier to make a thin film capacitor into a capacitor with a large capacity. For example, the common mkp capacitor is the name of the metalized polypropylene film capacitor (metailized polypropylene film capacitor), and mkt is the name of the metalized polyethylene capacitor (metailized polyester).
The films used for metallized film capacitors include polyethylene, polypropylene, polycarbonate, etc. In addition to the wound type, there are also laminated types. The capacitor of this type of metallized film has a so-called self healing effect (self healing acTIon), that is, when the small part of the electrode is short-circuited due to the fragility of the electrical interface, the electrode metal around the short-circuited part The electrostatic energy or short-circuit current carried by the capacitor at that time will cause a larger area of ​​melting and evaporation to restore the insulation and restore the capacitor to the role of the capacitor again.
The film capacitors used in audio equipment are the earliest and most well-known, and the first is the wima container known as the red elixir or the German elixir. When so-called tonic parts did not appear in Taiwan in the early years, wima was the only high-end item available on the market. Although the advancement of materials and technologies and market demand, various brands of advanced film capacitors have been dazzling, but wima should still be the most well-known brand. Wima's most famous capacitor is the pp capacitor with mkp-10.
After Wima, audio products are also used a lot, very historic, is also the German brand ero capacitor. The most common ero capacitors are green, and some are blue. When they are assembled on the circuit board with wima, they are in good harmony. ero is a brand of film capacitors, and roe is another brand of advanced electrolytic capacitors. The two have the same English letters, but the order is different, and readers should not be confused. It is also a German brand, but not much used in audio products is Siemens capacitors. This brand of soap electrolytic capacitors and film capacitors is used by German hi-end famous factory mbl, and its performance is excellent, so its strength cannot be small. watch for.
philips is a large enterprise group, and the products it manufactures are countless. From the most popular household appliances to the most advanced space technology, it has a wide range of levels. Of course, the production of capacitors will not be missed. The appearance of its capacitors is a faint aqua blue, which can often be found in audio equipment recently.
rifa is a premium capacitor of the Swedish brand. The common pp capacitors are blue. The specifications and sound performance are very good, but the price is also very expensive. Therefore, few audio manufacturers use them, but I only need to point out the three. You can probably understand the strength of this brand's famous audio factory. What about the three? Gryphon in Denmark, mark leivenson and cello in the United States.
Wonder capacitors and relcap capacitors are high-end capacitors that have been in the limelight for a while in recent years. The use of wonder capacitors is most famous for counterpoint machines. Audio research also uses it. The appearance is white cylindrical and the sealant is green; relcap is best known for the use of audio research, and its appearance is a pale yellow oval cylinder.
Solen capacitors in France have also been rapidly red in recent years. Its appearance is cylindrical, with a black skin, and both ends have brick red and gray. It is by far the only well-known manufacturer producing large-capacity mkp-quality capacitors (up to 200f). Therefore, solen capacitors are widely used in high-end speaker crossovers. The famous ones are: Danish dynaudio speakers, the United States Infinity speakers (including the mid-range treble column of irs-v), French jm lab speakers (alcor and utopia of Chi Jian are more attentive on the back panel of the speaker, with transparent acrylic show special customized super Solen capacitors are used to show the extraordinary materials.) In addition, they are used in many well-known manufacturers' crystal or tube circuit.
In terms of history, mit capacitor is the youngest high-end capacitor. It may not even be in three years since its launch. However, since it was launched, it can be described as "a sensation in martial arts and a sensation of ten thousand religions". It was once the entire hi-end The topic of the audio circle. The first reason is that its structure is special. The mit capacitor is a compound capacitor (mulTI cap), which means that a capacitor is actually composed of multiple capacitors in parallel. What are the advantages of doing so? The equivalent series resistance and equivalent series inductance of the capacitor can be reduced again, making the mit capacitor closer to the ideal capacitor, so all the technical specifications and characteristics that should be included are also excellent! Of course, there is a price to pay for doing this. The price of mit capacitors is high enough to discourage manufacturers or individuals who want to use it. This is also the second noticeable aspect of it. In addition, its volume is relatively large in terms of the same capacity. On circuits that pay attention to the mounting density of parts, the convenience of application will be limited. Its appearance is a white elliptical column, the lead is very thick, the sealant is black, and it has two types of metal foil and metalized film.
Depending on the medium, there are many types of capacitors, such as electrolyte capacitors, paper capacitors, film capacitors, ceramic capacitors, mica capacitors, and air capacitors. However, the most frequently used in audio equipment are electrolytic capacitors and film capacitors. Electrolytic capacitors are mostly used in places where large capacitance is required. For example, the filter capacitor of the main power supply is used for storing electrical energy in addition to filtering. Thin film capacitors are widely used in analog signal cross-linking, power supply noise bypass (reverse cross-linking) and other places. A film capacitor is a capacitor with a metal foil as an electrode, and a plastic film such as polyethylene, polypropylene, polyvinyl or polycarbonate, which is overlapped from both ends and wound into a cylindrical structure. And according to the type of plastic film, they are also called polyethylene capacitor (also known as mylar capacitor), polypropylene capacitor (also known as pp capacitor), polystyrene capacitor (also known as ps capacitor) and polycarbonate capacitor.
The film capacitor has many excellent characteristics, so it is a capacitor with excellent performance. Its main equivalences are as follows: non-polarity, high insulation resistance, excellent frequency characteristics (wide frequency response), and low dielectric loss. Based on the above advantages, film capacitors are widely used in analog circuits. Especially in the part where the signal is connected, capacitors with good frequency characteristics and extremely low dielectric loss must be used to ensure that the signal is transmitted without too much distortion. Among all plastic film capacitors, the characteristics of polypropylene (pp) capacitors and polystyrene (ps) capacitors are the most significant. Of course, the prices of these two capacitors are relatively high. However, in recent years, in order to improve the sound quality of audio equipment, the parts materials used have become more and more advanced, and the price is not the most important consideration, so in recent years, the frequency and number of pp capacitors and ps capacitors used in audio equipment have also increased. The higher. Readers can often see the equipment of XYZ brand, claiming how many pp-quality capacitors or PS-quality capacitors of XYZ brand are used as an endorsement in sound quality, the reason is here.
The usual film capacitors are manufactured by overlapping metal foils such as aluminum as electrodes and plastic films and winding them together. But in addition, there is another manufacturing method for film capacitors, called metallized film (metallized film). Its manufacturing method is to vacuum-deposit a thin layer of metal on the plastic film as an electrode. In this way, the thickness of the electrode foil can be omitted, and the volume per unit capacity of the capacitor can be reduced. Therefore, it is easier to make a thin film capacitor into a capacitor with a large capacity. For example, the common mkp capacitor is the name of the metalized polypropylene film capacitor (metailized polypropylene film capacitor), and mkt is the name of the metalized polyethylene capacitor (metailized polyester).
The films used for metallized film capacitors include polyethylene, polypropylene, polycarbonate, etc. In addition to the wound type, there are also laminated types. The capacitor of this type of metallized film has a so-called self healing effect (self healing acTIon), that is, when the small part of the electrode is short-circuited due to the fragility of the electrical interface, the electrode metal around the short-circuited part The electrostatic energy or short-circuit current carried by the capacitor at that time will cause a larger area of ​​melting and evaporation to restore the insulation and restore the capacitor to the role of the capacitor again.
The film capacitors used in audio equipment are the earliest and most well-known, and the first is the wima container known as the red elixir or the German elixir. When so-called tonic parts did not appear in Taiwan in the early years, wima was the only high-end item available on the market. Although the advancement of materials and technologies and market demand, various brands of advanced film capacitors have been dazzling, but wima should still be the most well-known brand. Wima's most famous capacitor is the pp capacitor with mkp-10.
After Wima, audio products are also used a lot, very historic, is also the German brand ero capacitor. The most common ero capacitors are green, and some are blue. When they are assembled on the circuit board with wima, they are in good harmony. ero is a brand of film capacitors, and roe is another brand of advanced electrolytic capacitors. The two have the same English letters, but the order is different, and readers should not be confused. It is also a German brand, but not much used in audio products is Siemens capacitors. This brand of soap electrolytic capacitors and film capacitors is used by German hi-end famous factory mbl, and its performance is excellent, so its strength cannot be small. watch for.
philips is a large enterprise group, and the products it manufactures are countless. From the most popular household appliances to the most advanced space technology, it has a wide range of levels. Of course, the production of capacitors will not be missed. The appearance of its capacitors is a faint aqua blue, which can often be found in audio equipment recently.
rifa is a premium capacitor of the Swedish brand. The common pp capacitors are blue. The specifications and sound performance are very good, but the price is also very expensive. Therefore, few audio manufacturers use them, but I only need to point out the three. You can probably understand the strength of this brand's famous audio factory. What about the three? Gryphon in Denmark, mark leivenson and cello in the United States.
Wonder capacitors and relcap capacitors are high-end capacitors that have been in the limelight for a while in recent years. The use of wonder capacitors is most famous for counterpoint machines. Audio research also uses it. The appearance is white cylindrical and the sealant is green; relcap is best known for the use of audio research, and its appearance is a pale yellow oval cylinder.
Solen capacitors in France have also been rapidly red in recent years. Its appearance is cylindrical, with a black skin, and both ends have brick red and gray. It is by far the only well-known manufacturer producing large-capacity mkp-quality capacitors (up to 200f). Therefore, solen capacitors are widely used in high-end speaker crossovers. The famous ones are: Danish dynaudio speakers, the United States Infinity speakers (including the mid-range treble column of irs-v), French jm lab speakers (alcor and utopia of Chi Jian are more attentive on the back panel of the speaker, with transparent acrylic show special customized super Solen capacitors are used to show the extraordinary materials.) In addition, they are used in many well-known manufacturers' crystal or tube circuit.
In terms of history, mit capacitor is the youngest high-end capacitor. It may not even be in three years since its launch. However, since it was launched, it can be described as "a sensation in martial arts and a sensation of ten thousand religions". It was once the entire hi-end The topic of the audio circle. The first reason is that its structure is special. The mit capacitor is a compound capacitor (mulTI cap), which means that a capacitor is actually composed of multiple capacitors in parallel. What are the advantages of doing so? The equivalent series resistance and equivalent series inductance of the capacitor can be reduced again, making the mit capacitor closer to the ideal capacitor, so all the technical specifications and characteristics that should be included are also excellent! Of course, there is a price to pay for doing this. The price of mit capacitors is high enough to discourage manufacturers or individuals who want to use it. This is also the second noticeable aspect of it. In addition, its volume is relatively large in terms of the same capacity. On circuits that pay attention to the mounting density of parts, the convenience of application will be limited. Its appearance is a white elliptical column, the lead is very thick, the sealant is black, and it has two types of metal foil and metalized film.
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