Integrated circuit IC is a huge integrated circuit system, including many kinds of products. Integrated circuit IC is just an assembly.   Integrated circuits, also known as ICs, can be divided into analog integrated circuits, digital integrated circuits and digital / analog hybrid integrated circuits according to their different functions and structures.   According to the conductive type, integrated circuits can be divided into bipolar integrated circuits and unipolar integrated circuits, both of which are digital integrated circuits.   Analog integrated circuits, also known as linear circuits, are used to generate, amplify and process various analog signals (signals whose amplitude changes with the time frontier, such as audio signals of semiconductor radios, tape signals of recorders, etc.), and their input signals are proportional to the output signals.   Digital integrated circuits are used to generate, amplify and process various digital signals (signals with discrete values in time and amplitude, such as audio signals and video signals replayed by VCD and DVD).   Bipolar integrated circuits have complex manufacturing processes and large power consumption. Representative integrated circuits include TTL, ECL, HTL, lst-tl, sttl and other types. Unipolar integrated circuits have simple manufacturing process and low power consumption, and are easy to be made into large-scale integrated circuits. Representative integrated circuits include CMOS, NMOS, PMOS and other types.   Integrated circuits are not only widely used in industrial and civil electronic equipment, such as tape recorders, televisions, computers and so on, but also widely used in military, communication, remote control and so on.   Integrated circuits can be divided into TV integrated circuits, audio integrated circuits, DVD player integrated circuits, video recorder integrated circuits, computer (microcomputer) integrated circuits, electronic organ integrated circuits, communication integrated circuits, camera integrated circuits, remote control integrated circuits, language integrated circuits, alarm integrated circuits and various special integrated circuits.
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Welding is a common production process that is widely used in various industries and fields. It is a process of joining two or more metal or non-metal materials together by means of heat or pressure. The development of welding technology has a long history. After years of development and improvement, a variety of different welding methods and techniques have been formed. In this article, we will introduce some common welding production processes. 1. Arc welding Arc welding is a common welding method that uses the high temperature and energy of an electric arc to melt and join metal materials together. Arc welding can be divided into manual arc welding, gas shielded arc welding and automated arc welding. Manual arc welding is the most basic arc welding method, which is simple to operate and suitable for small batch production and repair welding. Gas shielded arc welding protects the welding area with inert gas or active gas during the welding process to prevent oxidation and contamination and improve welding quality. 2. Gas shielded welding Gas shielded welding is a welding method that uses inert gas or active gas to protect the welding area. Common gas shielded welding methods include argon arc welding, argon arc welding, argon arc welding, etc. Gas shielded welding can effectively prevent oxidation and pollution, improve welding quality and efficiency, and is suitable for high-demand welding processes. 3. Weld cladding Weld cladding is a welding method that melts one or more metal or non-metal materials and coats them on the surface of the workpiece. Weld cladding can improve the surface hardness, wear resistance and corrosion resistance of the workpiece and extend the service life of the workpiece. Common welding cladding methods include spray welding, coating welding, cladding welding, etc. 4. Laser welding Laser welding is a welding method that uses the high energy of a laser beam to melt and connect metal materials together. Laser welding has the advantages of high precision, high efficiency and low deformation, and is suitable for fields with high requirements for welding quality and precision. Laser welding can be divided into traditional laser welding, laser deep penetration welding, laser surface alloying and other types. 5. Explosive welding Explosive welding is a welding method that uses explosive shock waves to connect metal materials together. Explosive welding has the advantages of high speed, high efficiency and low deformation, and is suitable for fields that require high welding speed and efficiency. Explosive welding can be divided into many types, including explosive welding, explosive pressure welding, and explosive fusion welding. In general, welding is a common production process that is widely used in various industries and fields. With the continuous development and progress of science and technology, welding technology is also constantly innovating and improving, providing more efficient, precise and reliable welding solutions for all walks of life. I hope that through the introduction of this article, readers will have a deeper understanding of welding technology, be able to better apply and promote welding technology, and contribute to the development of production and manufacturing.
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Erasible Programmable Read-Only Memory or EPROM, is a computer memory chip that retains data even after a power failure - that is, non-volatile (non-volatile). It is a set of floating-gate transistors that are programmed separately by an electronic device that provides higher voltage than is commonly used in electronic circuits. Once the program is complete, the EPROM can only be erased by intense ultraviolet radiation. EPROM is easily identified by a transparent window with silicon visible at the top of the package, which is also used for UV erasing.   Erasible Programmable Read-Only Memory (EPROM) is a RAM memory that can be erased and reprogrammed. It must be erased by illuminating the transparent window on its IC card with ultraviolet light before writing. This type of chip is easier to recognize and contains a "quartz glass window" in its package. A programmed EPROM chip's "quartz glass window" is usually covered with black sticker paper to prevent direct sunlight.   The contents of the EPROM can be erased and rewritten by special means. The basic unit circuit (storage cell) of the device usually uses floating gate avalanche injection MOS circuit, referred to as FAMOS for short. Similar to MOS circuits, two P-type regions with high concentration are grown on N-type substrates, and the source S and drain D are separately induced by ohmic contact.   There is a polycrystalline silicon grid floating in the SiO2 insulation layer between the source and the drain, with no direct electrical connection around it. This circuit represents memory 1 or 0 by whether the floating grid is charged or not. When the floating grid is charged (for example, a negative charge), just below it, a positive conduction channel is induced between the source and the drain, which makes the MOS tube conductive, that is, memory 0. If the floating grid is not charged, no conductive channel is formed and the MOS tube is not conductive, i.e. stored in 1.
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In today's society, tool products have become an indispensable part of people's lives. Whether in family life or in the workplace, tool products play an important role. With the continuous development of technology, the types and functions of tool products are also constantly expanding and upgrading. The mainstream tool product series has covered a wide range of tools, from simple screwdrivers and hammers to complex power tools and smart tools. When choosing tool products, consumers usually pay attention to the product's parameter requirements. These parameter requirements include product size, weight, power, voltage, speed, etc. These parameter requirements not only affect the product's performance and user experience, but are also directly related to the product's quality and safety. Therefore, mainstream tool product series will strictly follow certain parameter requirements during the design and production process to ensure that the product's quality and performance meet consumer expectations. First of all, mainstream tool product series usually have certain requirements in terms of size. Size is one of the basic parameters of tool products, which directly affects the scope of use and portability of the product. Generally speaking, consumers are more inclined to choose tool products with moderate size and easy to carry. Therefore, mainstream tool product series usually design products with appropriate size, which are easy to carry and can meet the needs of different usage scenarios. Secondly, mainstream tool product series also have certain requirements in terms of weight. Weight is one of the important factors affecting the portability of tool products. Overweight tool products will not only increase the burden on users, but also affect the user experience of the product. Therefore, mainstream tool product series usually design products with moderate weight, which can not only meet the functional requirements of the product, but also ensure the portability and comfort of the product. In addition, mainstream tool product series will also have certain requirements in terms of power. Power is one of the core parameters of tool products, which directly affects the work efficiency and performance of the product. Generally speaking, consumers are more inclined to choose tool products with high power and high efficiency. Therefore, mainstream tool product series usually design products with moderate power and stable performance, which can not only meet the use requirements of the product, but also ensure the safety and reliability of the product. In addition, mainstream tool product series also have certain requirements in terms of voltage. Voltage is one of the important parameters of tool products, which directly affects the scope of use and applicability of the product. Generally speaking, consumers are more inclined to choose tool products with stable voltage and wide application range. Therefore, mainstream tool product series usually design products with moderate voltage and wide application range, which can not only meet the needs of different usage scenarios, but also ensure the safety and stability of the product. Finally, mainstream tool product series will also have certain requirements in terms of rotation speed. Rotation speed is one of the key parameters of tool products, which directly affects the work efficiency and performance of the product. Generally speaking, consumers are more inclined to choose tool products with high rotation speed and high work efficiency. Therefore, mainstream tool product series usually design products with moderate rotation speed and high work efficiency, which can not only meet the use requirements of the product, but also ensure the safety and stability of the product. In summary, mainstream tool product series will strictly follow certain parameter requirements during the design and production process to ensure that the quality and performance of the products meet consumer expectations. Parameter requirements such as size, weight, power, voltage, speed, etc. not only affect the performance and user experience of the product, but are also directly related to the quality and safety of the product. Only on the basis of these parameter requirements can the mainstream tool product series truly meet the needs of consumers and improve the competitiveness and market share of the products.
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KYOCERA AVX
Panasonic Industrial Automation Sales
Analog Devices Inc.
Susumu
Ohmite
Maxim Integrated
Vishay Dale
Rohm Semiconductor
Bourns Inc.
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