Company introduction
Shenzhen Smart-core cloud Information Technology Co,. Ltd(abbr.SMCC), relying on rich industry experience and resources of the Group Smart-Core Holdings (02166.HK) in the field of electronic component distribution, focuses on the independent distribution business of electronic components and e-commerce business.Based on a strong channel network and supplier database, it provides customers with convenient supply chain services such as Large-Batch Spot Procurement、Long-Term Ordering and Emergency Materials Procurement. In order to provide customers with comprehensive protection, we have set up a experienceed QC team to ensure that customers receive 100% qualified goods. In order to completely eliminate the harm caused by fake and shoddy products, we also cooperate with well-known third-party inspection agency, which can conduct in-depth professional testing on all products. In addition, SMCC has passed ISO9001:2015 certification and has become a member of ERAI. SMCC has a comprehensive distribution network covering Hong Kong, Shenzhen, Beijing, Shanghai, Hangzhou, Chengdu, Wuhan, Xiamen, Taipei, Europe, Japan, Singapore, Vietnam, India, etc. Efficiently and accurately meet the spot demand of local customers.
  • What works with erasable programmable read-only memory

    1-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.   Specifically, ROMs are generally used for small fixed storage purposes, such as game cards, general electronic product programs are stored in ROM, but EPROM storage is needed for less frequent changes, such as BIOS programs on computers, which are often rewritten in RAM (read-access momery readable and write memory), such as memory.   Structure of cascade gate injection MOS tube. When the floating grid Gf is not charged, the normal logical high level added to the control grid Gc can make the MOS tube conductive. When a negative charge is charged on the floating grid, a normal logical high level is added to the control grid and the MOS tube is not conductive, which is equivalent to not having this storage element connected. Programming uses a high voltage between the drain and the source to generate avalanche breakdown, while adding a high voltage pulse to the control grid, some energetic electrons pass through the SiO2 layer to the floating grid, forming a charge charge charge.   When erasing is required, the transparent window on the EPROM surface can be exposed to a certain intensity of ultraviolet light, and the charge on the floating grid can be leaked after 15-20 minutes. Usually, the transparent window should be closed and shaded to ensure that the charge on the floating grid is stored for a long time. This EPROM erased with ultraviolet light is also called UVEPROM.   In addition, there is an EPROM that is erased by the voltage signal, also known as EEPROM (or EPROM). The stacked MOS tube is also used in its storage unit, and the reverse high voltage pulse is applied on the control grid when erasing.   Because data in EPROM can be modified, it is particularly suitable for making read-only memory in which data needs to be modified.

    2024-05-31 0

  • What are the product categories of voltage regulators?

    2-Voltage regulator (AVR) is one of the supporting equipment of battery management integrated circuit (IC). It is specially designed for supporting fundamental wave, harmonic compound excitation or AC brushless generator equipped with permanent magnet generator excitation (PGM system).   The voltage regulator is made by using the switching characteristics of the transistor. That is, the transistor is connected in series in the excitation circuit of the generator as a switch. According to the output voltage of the generator, the on and off of the transistor is controlled, and the excitation current of the generator is adjusted to stabilize the output voltage of the generator within a certain range.   According to the classification of working principle, voltage regulators can be generally divided into the following types:   The contact type voltage regulator is applied earlier. The contact vibration frequency of this regulator is slow, there are mechanical inertia and electromagnetic inertia, the voltage regulation accuracy is low, the contact is easy to generate sparks, the radio interference is large, the reliability is poor, and the life is short. It has been eliminated.   With the development of semiconductor technology, transistor regulator is adopted. Its advantages are: the switching frequency of the triode is high, no spark is generated, and the adjustment accuracy is high. It also has the advantages of light weight, small volume, long service life, high reliability, and small radio wave interference. It is now widely used in Dongfeng, Jiefang and many medium and low-grade vehicles.   In addition to the advantages of the transistor regulator, the integrated circuit regulator is also ultra small. It is installed inside the generator (also known as the built-in regulator), reducing the external wiring and improving the cooling effect. It is now widely used in Santana. Audi and many other sedan models.   After the total load of the system is measured by the electric load detector, the signal is transmitted to the generator computer, and then the generator voltage regulator is controlled by the engine computer to timely connect and disconnect the magnetic field circuit, which can reliably ensure the normal operation of the electrical system, fully charge the battery, reduce the engine load, and improve the fuel economy.  

    2024-05-30 0

  • What are the characteristics of the CL capacitance of thin film capacitors

    3-Advances in science and technology have promoted the development of the electronic industry, in which capacitors are an indispensable type of electronic components. A capacitor is a container that holds and stores charges and has a capacitor inside an electronic product. Capacitors are mainly used in the circuit of direct connection, coupling, bypass, filter, tuning circuit, energy conversion, control and other aspects, with the emergence of electronic products, the development of the capacitor industry is also better.   There are many kinds of capacitors. The familiar capacitors in life are regular capacitance, thin film capacitance, super capacitance and ceramic capacitance. There are many kinds of film capacitance, which can be divided into polyethyl ester capacitance, polypropylene capacitance, polystyrene capacitance and polycarbonate capacitance according to the capacitance of the dielectric material film. Thin-film capacitors are divided into T-type thin-film capacitors, P-type thin-film capacitors and N-type thin-film capacitors according to the dielectric.   CBB film capacitance is widely used in film capacitance. CL capacitance is also a film capacitance which is often used. CL capacitance is often called polyester or polyester film capacitance. It is made of polyester film as media, metal foil as electrodes, inductive or non-inductive winding into a cylindrical structure, and is encapsulated with flame retardant epoxy resin outside.   CL capacitance uses polyester membrane material as the medium, so it has the advantages of high dielectric constant, large capacity, small size and good stability, which is suitable for the bypass capacitance in the circuit. In addition, the advantages of CL capacitor such as small dielectric loss and excellent bypass characteristics are widely used in analog circuits, especially in the signal cross-linking part, good frequency characteristics must be used. Capacitors with low dielectric loss, such as CL capacitor, ensure that the distortion when transmitting signals is not too large.   CL capacitors are sold by many bad merchants because of their good characteristics and usage. People should pay attention to distinguishing when choosing CL capacitors.

    2024-05-29 0

  • What are the components of erasable programmable read-only memory

    4-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.  

    2024-05-27 1

Shenzhen Smart-core cloud Information Technology Co,. Ltd(abbr.SMCC), relying on rich industry experience and resources of the Group Smart-Core Holdings (02166.HK) in the field of electronic component distribution, focuses on the independent distribution business of electronic components and e-commerce business.Based on a strong channel network and supplier database, it provides customers with convenient supply chain services such as Large-Batch Spot Procurement、Long-Term Ordering and Emergency Materials Procurement. In order to provide customers with comprehensive protection, we have set up a experienceed QC team to ensure that customers receive 100% qualified goods. In order to completely eliminate the harm caused by fake and shoddy products, we also cooperate with well-known third-party inspection agency, which can conduct in-depth professional testing on all products. In addition, SMCC has passed ISO9001:2015 certification and has become a member of ERAI. SMCC has a comprehensive distribution network covering Hong Kong, Shenzhen, Beijing, Shanghai, Hangzhou, Chengdu, Wuhan, Xiamen, Taipei, Europe, Japan, Singapore, Vietnam, India, etc. Efficiently and accurately meet the spot demand of local customers.
KYOCERA AVX Panasonic Industrial Automation Sales Analog Devices Inc. Susumu Ohmite Maxim Integrated Vishay Dale Rohm Semiconductor Bourns Inc. Auvidea Advantech DIGI Omron Automation and Safety Lantronix HARTING M5Stack

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