FluxThe flux is a kind of high temperature resistant coating. In order to prevent bridge and short circuit in the welding process, the welding materials can be protected by the resistance flux on the parts that do not need to be welded, so…

Assembly welding sequenceWhen welding and inserting the components, the identification of the components should be guaranteed to be easy to identify, and the mounting parties of the components on the printed circuit board should be ensured…

3.2.5 layout and wiring of componentsIt is the first step to design the printed circuit board by placing the electronic device and its connection on a certain panel area, which determines the neat appearance of the board and the length and…

substrate for printed circuit boardsPrinted circuit board (PCB) refers to the substrate carrying electronic components, and the substrate is the basic material of the circuit board. The manufacture of the printed circuit is completed on th…

Selection of external connection Mode of printed Circuit Board The printed circuit board must have the problem of external connection. The connection methods include wire welding, connector connection and so on.Form.1. Wire weldingWire wel…

Manufacturing process of printed circuit boards 1. Manufacturing method of printed circuit boardsThe manufacture of printed circuit board (PCB) is to transfer the printed circuit board diagram of printed circuit board to the laminated boar…

3.1.2 characteristics of printed circuit boardsIn electronic equipment, the main function of the printed circuit board: 1 provides the necessary mechanical support for the various components of the circuit. The circuit can work more stably…

2.2 the process of tin welding mainly includes the following aspects.1) the welding surface is heated to the required temperature.(2) The solder is heated and melted.(3) solder soaking the welding surface. The solder, which is melted after…

Packaging and pin identification of integrated circuits1. Packaging of integrated circuitsThe packaging form of integrated circuit includes circular metal package flat ceramic package double row straight insert plastic package. One-way ana…

1.6.3The naming method of Integrated CircuitsThe method of naming integrated circuits shall be in accordance with the national standards, each model shall consist of the following five parts, each of which is symbolized and defined in Tabl…

What is the size of the resistor?The size of the resistance of the metal conductor is related to the four factors of the resistivity, length, cross-sectional area and temperature of the conductor.According to the law of resistance R=ρL/S1.…

What is the difference between electronic component plug-ins and patches?For some small signal devices, such as resistors, ceramic capacitors, control chips, etc.The use of patches is superior to plug-ins because the production process is …

Electronic triode and crystal triodeTransistors are all triodes and are semiconductor devices. There is also a triode, called an electron triode, or a triode tube. It is a kind of electron tube that has been eliminated. It is rarely used n…

How to choose an air switch The general principle of air switch selection: The rated voltage of the air switch must be greater than or equal to the rated voltage of the line; The rated current of the air switch and the rated current of the…

How to repair the circuit board?Online measurementStep 1: Power on the board. In this step, it should be noted that some boards are not single, they may need 5V, and they need positive and negative 12V, 24V, etc. Don't add the added power.…

3.2.5 layout and wiring of componentsIt is the first step to design the printed circuit board by placing the electronic device and its connection on a certain panel area, which determines the neat appearance of the board and the length and…

Assembly welding sequenceWhen welding and inserting the components, the identification of the components should be guaranteed to be easy to identify, and the mounting parties of the components on the printed circuit board should be ensured…

FluxFlux is one of the most important materials in tin welding. The melting point of the coal flux is lower than that of the solder, and its relative density drilling degree is smaller than that of the solder. The use of welding aid can im…

Design of anti-electromagnetic interference In order to minimize the interaction and interference of the components on the printed circuit board, the high-frequency circuit and low-frequency circuit, high-potential and low-potential compon…

matters needing attention in the selection and use of Integrated CircuitsIn the selection of integrated circuits, the device manual should be consulted according to the actual situation. On the premise of satisfying the functional dynamic …

The benefits of home automation revolve around savings, efficiency, comfort, security, and control. With a home automation system in your mind, not only will you have an easier time controlling your devices but also peace of mind. Among th…

The regular inspection of an inverter is preferably performed twice a year. When using the air compressor to clean the frequency converter, a moisture separator should be installed to prevent the moisture in the compressed air from being s…

Rectifier transformer and power transformerPower transformers generally refer to transformers powered by electric traction systems. Most of the transformers in the power grid are power transformers.The rectifier transformer is a transforme…

DC resistance and insulation resistanceThe purpose of measuring DC resistance is to check the quality of the windings or coils of electrical equipment and the integrity of the circuit to find the wire breakage, joint welding, poor contact,…

Self-resetting switch and self-locking switchThe power switch button of the computer case is a self-resetting switch. Its function is to turn on the start circuit at the time of pressing, and give the motherboard a start signal, and then d…

What is the relationship between the chip and the discrete device? What is the relationship between discrete devices and integrated circuits?A chip is a general term for an integrated circuit. A discrete device refers to a device other tha…

XC3S400-4FG320C Adhering to the goal of "first-class enterprise, first-class product, first-class reputation and first-class service", and adhering to the development idea of "brand, scale and industrialization". ALLICDATA ELECTRONICS LIMI…

XC2S200-6FGG456C ALLICDATA ELECTRONICS LIMITED is an enterprise engaged in selling electronic components for many years. In line with the concept of "people, quality, service and innovation" to provide customers with high-quality electroni…

XA3S500E-4FT256Q ALLICDATA ELECTRONICS LIMITED is a professional electronic components distributor.The company has a number of professional technical personnel, excellent technical level, positive production staff, humanized management and…

GRM0225C1E2R9BA03L GRM0225C1E2R9BA03L ALLICDATA ELECTRONICS LIMITED Since the establishment of our company, we have followed the development policy of “first-class talents, first-class management, first-class service”, with the business ph…