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How are Integrated Circuits produced?17 March 2020
An integrated circuit is a miniature electronic device or component with specific circuit functions. It is made through semiconductor manufacturing processes such as oxidation, photolithography, diffusion, epitaxy, and aluminum evaporation.
Introduction to Types of Diodes13 March 2020
According to different purposes, diodes can be divided into rectifier diodes, detection diodes, Zener diodes, varactor diodes, photodiodes, light-emitting diodes, switching diodes, fast recovery diodes, etc.
What are Laser Diodes?12 March 2020
Laser diodes include single heterojunction (SH), double heterojunction (DH), and quantum well (QW) laser diodes. The quantum well laser diode has the advantages of low threshold current and high output power, which is the mainstream product in the market. Compared with optical maser, laser diodes have the advantages of high efficiency, small size, and long life, but their output power is small (generally less than 2mW), linearity and monochromaticity are poor, limiting their applications in cable television systems for not able to transmit multi-channel, high-performance analog signals. In the feedback module of the bidirectional optical receiver, the uplink transmission generally uses a quantum well laser diode as a light source.
An Overview of Top Semiconductor Companies10 March 2020
The widespread use of semiconductors has changed our way of life. With the proliferation of electronic equipment, companies manufacturing semiconductors are booming.
Thermistor: Characteristics, Classification, Symbol and Applications06 March 2020
Thermistors are a class of sensitive components. They are divided into positive temperature coefficient thermistors (PTC) and negative temperature coefficient thermistors (NTC) according to different temperature coefficients.
Characteristics, Types, and Functions of Electrolytic Capacitors04 March 2020
Inside the electrolytic capacitor is an electrolyte material that stores electric charge. It has positive and negative polarity, which is similar to a battery, and it cannot be reversed. The positive electrode is a metal substrate with an oxide film. The negative electrode is connected to the electrolyte (solid and non-solid) through the metal electrode plate.
An Overview of Supercapacitors03 March 2020
Supercapacitors, also known as electrochemical capacitors, electric double-layer capacitors, gold capacitors, and farad capacitors, are developed between the 1970s and 1980s, which is an electrochemical element that uses polarized electrolytes to store energy. The supercapacitor is different from the traditional chemical power supply. It is a power supply with special performance between the traditional capacitor and battery, which mainly relies on the electric double layer and redox pseudo capacitor charge to store electrical energy. However, no chemical reaction occurs during the energy storage process. This energy storage process is reversible, for which supercapacitors can be repeatedly charged and discharged hundreds of thousands of times.
Introduction to Semiconductor Devices02 March 2020
Semiconductor devices are electronic devices with conductivity between a good conductor and an insulator. It uses the special electrical characteristics of semiconductor materials to accomplish specific functions such as generate, control, receive, transform, and amplify signals, and convert energy.
Understanding of Carbon Film Resistors29 February 2020
A carbon film resistor is a type of film resistor, which is also called thermal decomposition carbon film resistor. It’s a thin-film resistor in which the carbon that is thermally decomposed from a hydrocarbon at high temperatures is deposited on a substrate. It adopts high-temperature vacuum coating technology to tightly attach carbon to the surface of a porcelain rod to form a carbon film, and coats the surface with an epoxy resin to protect the film. Its surface is often coated with green protective paint. The thickness of the carbon film determines the resistance value. And usually, the thickness of the film and the groove are used to control the resistor. Besides, it has a low price, stable performance, a wide range of resistance and power.
Basic Introduction to the Types of Capacitors28 February 2020
A variety of capacitors are used in the manufacture of electronic devices, and they play different roles in the circuit. There are many types of capacitors, such as fixed capacitors, variable capacitors, and trimmer capacitors, and fixed capacitors can be divided into ceramics, mica, paper, film, and electrolytic capacitors according to the different dielectric.
Analysis of Resistors in Series and Parallel26 February 2020
Several resistors are connected at a time to form a circuit without branches in the middle, which is called a resistor in a series circuit. And a circuit that connects two or more resistors between two points in a circuit with the same voltage at both ends of the resistor is called a resistor in a parallel circuit. The following mainly focus on the circuits, calculation methods, fault characteristics and fault treatment of resistors in series and parallel. And the final part introduces a concept-- ESR, which is related to series resistors and capacitors
How to read Resistors Color Code?26 February 2020
We can read the resistance value according to the resistors color code because of the use of four color bands or five color bands or six color bands on the resistors to indicate the resistance value. The color information representing the resistance value can be read at once from any angle.