The semiconductor diode mainly depends on the PN junction and work. The point contact type and Schottky type, which are inseparable from the PN junction, are also included in the range of general diodes. So what types can it be classified according to its construction? Follow Xiaobian to have a look ~ ⒈ Dot contact diode Point contact diodes are formed by pressing a metal needle on a single chip of germanium or silicon and then passing it through the … Continue reading "What types of semiconductor diodes can be classified according to their construction?"
During communication, there are two causes of terminal resistance signal reflection: impedance discontinuity and impedance mismatch. Impedance discontinuity, the signal at the end of the transmission line suddenly meets the cable impedance is very little or no, the signal will cause reflection at this point. The principle of signal reflection is similar to the way light is reflected from one medium to another. To eliminate this reflection, a terminal resistance of the same size as the characteristic impedance of the … Continue reading "Do you know the reflection principle of terminal resistance signal?"
What is the terminal resistance? Terminal resistance is an obstacle encountered in the transmission of electronic information. When high-frequency signals are transmitted, the signal wavelength is shorter than that of the transmission line, and the signal will form reflected waves at the terminal of the transmission line, interfering with the original signal. Therefore, terminal resistance should be added at the end of the transmission line, so that the signal will not reflect after reaching the end of the transmission line. … Continue reading "What is terminal resistance?"
Today Xiaobian to introduce the difference between the following four kinds of resistance: 1, insulation resistance A DC voltage is applied to the medium. After a certain time of polarization, the corresponding leakage current through the dielectric is called insulation resistance. Insulation resistance is the most basic insulation index of electrical equipment and electrical circuit. Low voltage electrical equipment handover test, motor, distribution equipment and distribution line insulation resistance shall not be less than 0.5 mω (operating equipment and wiring … Continue reading "What are the differences between the four common resistors?"
What is a relay? A relay is an electrical control device that has an interaction between a control system (also called an input loop) and a controlled system (also called an output loop). It is usually used in automatic control circuits. It is actually a control circuit using small current to control the operation of large current "automatic switch". Therefore, it plays the role of automatic adjustment, safety protection and conversion circuit in the circuit. Its working principle is to … Continue reading "One minute takes you to learn about relays"
There are many people who do not know what a capacitor is and even mistake a battery for a capacitor. What is the difference between a capacitor and a battery? Today, follow Xiaobian to understand it ~ Capacitor is a kind of energy storage element, its basic working principle is charging and discharging. In electronic circuits, the charging and discharging of capacitors are often used for circuit conversion. The charging process is the process of charge storage in the capacitor. … Continue reading "What's the difference between a capacitor and a battery?"
Resistor, IS A current LIMITING ELEMENT, AFTER THE RESISTOR is connected to the circuit, the resistor value is fixed, usually two pins, its function is to limit the amount of current through the branch to which it is connected or as a load in the circuit, is an electronic component. General resistance has the following types: Fixed resistance: refers to the resistance value fixed constant resistance; Adjustable resistance: commonly known as potentiometer, refers to the resistance value of continuous adjustable … Continue reading "What are the types of resistors?"
To ensure rated voltage over 600V, the L6574 is manufactured with BCD off-line technology, which makes it ideal for lamp ballast applications. The device is designed to drive two power MOSFets using a classic half-bridge topology that ensures all the functions required to drive and properly control fluorescent bulbs. The L6574 has a dedicated timing section where the user can set the necessary parameters for proper warm-up and ignition. In addition, an operational amplifier is provided for closed-loop control of … Continue reading "L6574_ CFL/TL ballast drivers that support preheating and dimming"
Demand for memory chips in consumer electronics has clearly cooled, although demand for chips in cars remains in short supply. Financial Union June 30 - (editor Liu Rui) although the car chip is still in short supply, but consumer electronics memory chip demand has obviously cooled. South Korea's national chip inventory rose 53.4% in May from a year earlier, the largest increase in more than four years and a sign of a significant slowdown in global demand for memory chips … Continue reading "South Korea's chip inventories surged 53.4 percent in May as consumer electronics demand slowed markedly"
The first molecular electronic chip has been developed, fulfilling the 50-year goal of integrating a single molecule into a circuit to reach the ultimate extended limit of Moore's Law. The chip, developed by Roswell Biotechnologies and a multidisciplinary team of leading academic scientists, uses a single molecule as a common sensor element in a circuit, creating a programmable biosensor. This sensor has real-time, single-molecule sensitivity and infinite scalability of sensor pixel density. The innovation, published this week in PNAS, will … Continue reading "Scientists develop the first molecular electronic chip"