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1. Component Problems: Taiwan Low ESR Radial Aluminum Electrolytic Capacitors
- www.niccomp.com
- Low-ESR Aluminum Electrolytic Failures Linked to Taiwanese Raw Material Problems.
- On September 13, 2002, it was reported to Passive Component Industry Magazine by contacts in Japan that an unusually high rate of failures of low-ESR aluminum electrolytic capacitors produced in Taiwan by Lelon Electronics, Luxon Electronics, and other aluminum capacitor manufacturers had been traced to a problem with an aqueous electrolyte that had been used throughout the Taiwanese electrolytic capacitor industry.
- The scientist then developed a copy of Rubycon P-50 type water-based electrolyte, used in low-ESR aluminum electrolytic capacitors developed by Luminous and equivalent to the Rubycon ZA and ZL series. Subsequently, the scientist's staff members defected with the formula, and began to sell and electrolyte at a low price to many of the major aluminum electrolytic houses in Taiwan, including Luxon Electronics, Lelon Electronics, and other aluminum capacitor manufacturers. ...
- The instability of the electrolyte in the low-ESR aluminum electrolytic capacitors using this water-based electrolyte leads to the build-up of excess hydrogen inside the aluminum can, which results in either a rupture of the can itself or destruction of the rubber end-seal. ...
- Subsequent lifetime tests on low-ESR aluminum electrolytic capacitors produced in Taiwan by Japanese aluminum capacitor hours revealed the occurrence of catastrophic failure of the Taiwanese aluminum electrolytic capacitors after 2000 hours of operation on parts rated for 4000 hours of operation. ...
- Industry sources have further revealed that many top companies in the computer motherboard and telecom infrastructure businesses have been scrambling to obtain low-ESR parts from aluminum electrolytic capacitor suppliers who did not have plants in Taiwan. ...
- Total Taiwanese production of aluminum electrolytic capacitors is approximately 22. 5 billion pieces or 30% of the global aluminum electrolytic capacitor unit shipments. Thus, the failure of these Taiwanese aluminum electrolytic capacitors could have a major impact on the prime industries that consume these products, namely computer motherboards and high-speed modems; although, depending on the number of parts sold and range of buyers, the problem may affect the power supply, monitor, and game console industries. It is important to emphasize, however, that the products that have been affected are only the low-ESR type aluminum capacitors, which account for less than 20% of Taiwan's aluminum electrolytic capacitor production volume.
- The effects of the bad electrolyte on the aluminum electrolytic capacitor supply chain are not known at this time. ...
- Publisher's Note: Information about this story was obtained from multiple sources, many of which wish to remain anonymous due to the ramifications to the entire supply chain for aluminum electrolytic capacitors. However, the story has been confirmed by a variety of sources, including manufacturers of aluminum capacitors, as well as consumers of aluminum electrolytic capacitors in the computer industry. ...
- IBM would not speculate on the effect this may have on the aluminum electrolytic capacitor supply chain, but conceded that the effect may be substantial. ...
2. China begins emission licensing system for steel, cement, electrolytic aluminum makers
- english.peopledaily.com.cn
- China begins emission licensing system for steel, cement, electrolytic aluminum makers.
- China's steel, cement and electrolytic aluminum makers will have to have licenses for pollutant discharge to carry on with their production beginning in 2004, said China's environmental watchdog Monday. ...
- China's steel, cement and electrolytic aluminum makers will have to have licenses for pollutant discharge to carry on with their production beginning in 2004, said China's environmental watchdog Monday. ...
- The State Environmental Protection Administration (SEPA) demanded in a document made public Monday that nationwide steel, cement and electrolytic aluminum makers should pass examinations on waste discharge standards and total pollutant control indicators. ...
- China's steel, cement and electrolytic aluminum production exceeds all other countries in the world. ...
- Official statistics predict that capacities of steel, cement and electrolytic aluminum will surge to 330 million, 10 million, and one billion tons respectively in 2005, 60 million, 4 million and 100 million tons more than domestic demand respectively. ...
3. FaradNet Book "Electrolytic Capacitors" Chapter 2
- www.faradnet.com
- Electrolytic Capacitors .
- BASIC THEORY of OPERATION of ELECTROLYTIC CAPACITORS.
- DURING the past fifteen years, various theories have been put forth in an attempt to explain the operation of electrolytic capacitors. ...
- In the author's opinion, there is only one true explanation of the operation of an electrolytic capacitor and basic theory of operation will be confined to that opinion, not because of any arbitrary attitude or because it is the author's own theory but rather on the other hand, because all points can and have been experimentally verified, and also because all conditions can be met and checked. ...
- While tantalum was found to possess an oxide of the most desirable characteristics its cost, so far, has limited its economical usefulness in electrolytic capacitors. ...
- Aluminum, on the other hand, being both plentiful and sufficiently economical, has become the most widely used metal in electrolytic capacitor structures. This is the case to such an extent that all subsequent work will refer only to the use of aluminum as the anodic member of electrolytic capacitors. ...
- An oxide film can be formed on aluminum by electrolytic means. ...
- ELECTROLYTIC CELL.
- The electrolytic capacitor has a high capacity per unit volume as compared to other types of capacitors. ...
- The electrolytic capacitor can only be used with a flow of current in one direction. ...
- From this, it can be readily seen that the system exhibits the characteristics of a rectifier, and an electrolytic capacitor does not then differ in any way from the well known electrolytic rectifier. ...
- It is thus seen why the electrolytic capacitor must always be connected in such a manner that the electrolyte is the negative electrode, for then only will a small current flow through the capacitor. ...
- From this it can be seen that the capacity of an electrolytic capacitor is a direct function of the area of the anode member and that the thickness of the dielectric film is always automatically matched to the potentiat difference or voltage. ...
- In actual practice it is true, although unfortunate, that the design of electrolytic capacitors is to a certain degree a series of compromises. ...
- Another compromise must, however, be made in relation to the voltage breakdown of electrolytic capacitors. ...
4. Chromium (electrolytic)
- www.alloychange.com
- STAINLESS STEEL & HI-TEMP ALLOYS Main Menu | Membership | Exotic Metal & Certified Alloy Index Chromium (electrolytic) .
- Chromium (electrolytic).
- Chromium (electrolytic) includes all grades of metalic Chromium. ...
5. Reforming Electrolytic Capacitors
- www.vcomp.co.uk
- Reforming Electrolytic Capacitors.
- Reforming Electrolytic Capacitors.
- The process of reforming an old aluminum electrolytic capacitor consists of the application of rated voltage, through a resistor, for a period equal to five minutes plus one minute per month of storage.
- Within an aluminum electrolytic there is a large area of aluminum foil and an electrolytic paste. ...
- Excess heat may "pop" the electrolytic, causing the paste to spit out. ...
- Electrolytic capacitors can be dangerous. ...
- Electrolytic capacitors of a given capacity and voltage will vary considerably in configuration and size, from one manufacturer to the another. ...
- The Electrolytic Capacitor.
- The origin of the electrolytic capacitor or condenser can be traced to the second half of the 19th century when the discovery was made that film can be formed on aluminum electrochemically and that it will exhitbit unidirectional electrical conductance and other peculiar properties. ... By 1929 the high-voltage dry electrolytic was developed and soon found very extensive and diversified applications in several fields. The annual production of dry and wet electrolytic capacitors amounts now to tens of millions and they are used in radio receivers and transmitters, sound systems and other electronic apparatus, in telephone circuits, in conjuction with electric motors and, to a smaller extent, in a number of other applications.
- The essential difference between the electrolytic and nonelectroltyic capacitor resides in the nature and thickness of the respective dielectrics and in the presence or absence of an ionic conduction medium (the electrolyte) between the metallic electrodes. ... We know, however, that the dielectric in electrolytic capacitors is intimately associated with surface of the electrode and that its existence is correlated with the formation of an oxide film on the latter.
- Nonelectroltyic capacitor sections or units can be built for much higher operating voltages than is practicable for the electrolytic type. ...
- The true cathode of the electrolytic capacitor is the electrolyte (or, more accurately, its ions, which thus play the part of one of the electrodes), the film is the dielectric and the anode is the second electrode represented by the metallic member on the surface of which the film is formed. ...
- It must be noted, however, that the symmetric electrolytic capacitor differs basically from the series combination of two nonelectroltyic capacitors. ...
6. Electrolytic capacitors
- www.hans-egebo.dk
- Electrolytic capacitors.
- The article endeavours to give you a basic knowledge the inner workings and practical use of one of the sensitive components in such equipment, the electrolytic capacitor.
- To understand the electrolytic capacitor, we must first look at capacitors in general. ...
- Electrolytic capacitors are not used in tuned circuits.
- Electrolytic capacitors are rarely used in tone filters.
- Electrolytic capacitors have some use here.
- This is the main use for electrolytic capacitors. ...
- Now, I have already mentioned that electrolytic capacitors have their main use in filtering, and in that business size counts. ...
- The oxide layer is made by an electrolytic process; the foil is submerged in some liquid and current is passed through the liquid into the metal, forming the oxide layer. ... This is the reason electrolytic capacitors can regenerate if you raise the voltage over them slowly. ... This is the reason you need to observe polarity strictly when using electrolytic capacitors.
- And as if that was not bad enough, once the elektrolyte escapes, it will interact corrosively with other parts of the equipment, because all electrolytic liquids are more or less corrosive.
- Finally, even if our electrolytic capacitor escapes a violent demise, its very construction gives it a limited life-span. ... This is the reason that people who restore antique radios will often be faced with the need to replace electrolytic capacitors.
- Three sure ways to kill an electrolytic capacitor: .
- Heat shortens the life of an electrolytic capacitor. ...
7. SurfTran - Electrolytic Machining
- www.surftran.com
- How Electrolytic Machining Works.
- Parts Best Suited for the Cationic Electrolytic Machining Process.
- Cationic Electrolytic Form Deburring is qualified particularly for higher production components with difficult-to-remove burrs created by: milling, drilling, sawing, turning, or stamping, where the degree and quality of other deburring methods have proven inadequate.
- Cationic Electrolytic Contour Machining is the defined machining of grooves, channels or unusual shapes on production components, using a static electrode. Edge rounding for stress removal and fluid cavity machining are two prime applications for Cationic Electrolytic Machining.
- Electrolytic form deburring and contour machining can be combined in a single operation, depending on part requirements.
8. ELECTROLYTIC CAPACITORS IN SERIES 1 (JOYSTICK) 4000's
- members.aol.com
- ELECTROLYTIC CAPACITORS IN SERIES 1 (JOYSTICK) 4000's.
- In the past two years I have noticed a significant increase of IEC brand electrolytic capacitor failures in the Series 1 4000. ...
- Each plug in board had electrolytic output coupling caps. ...
- The Correlator PCBs may contain IEC electrolytic capacitors in the gate circuits (C13/14, C 22/27, and C 25). ...
9. Skyline Technology Electronics Co.,Ltd.,
- www.bs-skyline.com
- , specialize in supplying a wide range of electronic components with our Skyline brand including tantalum capacitors (dipped solid tantalum capacitor, chip tantalum capacitor, wet tantalum capacitors, metal-cased tantalum capacitor), multi-layer ceramic capacitor (general purpose capacitor and high voltage capacitor ), Metallized film capacitor ( polyester and polypropylene ) ,Chip aluminum electrolytic capacitor , chip resistor and other electronic components from China. ...
10. ::Electrolytic Manganese Metal::zinc powder::fine spherical aluminium powder::zinc ingots::
- www.hnkingstone.com
- It has output of 100,000 metric tons of zinc ingots, 20,000 metric tons of electrolytic manganese metal, 20,000 metric tons of fine spherical zinc powder, 3,000 metric tons of electric zinc powder and 50 million pieces high-powered environment protecting batteries. ...
- Up till now we have been producing 12,000MT of electrolytic manganese metal flakes 99. 7%, 6,000Mt of electrolytic Manganese metal lumps 96%-97%,60,000 MT of zinc ingots 99. 99%, and zinc powder 96-98%, electrolytic manganese metal in powder, aluminum powder. ...
11. Electrolytic Capacitors
- www.powerdesigners.com
- Electrolytic Capacitors.
- Electrolytic capacitors are major components of any power converter in use today. ... This design note will shed some light on the main features of electrolytic capacitors. ...
- An electric equivalent schematic of an electrolytic capacitor can be described as an equivalent series resistance (ESR), equivalent series inductance (ESL), the capacitance (C) and a parallel resistance for the leakage current (Rleak) depends on the quality of the dielectric.
- Equivalent circuit of an electrolytic capacitor.
- The ESR value for electrolytic capacitors depends on the temperature and frequency. ...
- The electrolytic capacitor is often used to smooth the voltage after a rectifier.
12. Bellingham Steel and Tinplate - supply of electrolytic, hot dipped and other of tin plate products.
- www.bellingham-steel.co.uk
- International suppliers, stockholders and merchants of Electrolytic, Hot dipped and other Tinplate products .
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