FR-4 is a glass epoxy laminate, most commonly used in PCBs (printed circuit boards). It is used in various flexible printed circuit boards and other semi-rigid variants. It shows excellent high strength and flame retardancy. The easy integration of applications and the allowable component mounting make it the material ...

We will encounter various safety spacing issues in ordinary PCB design, such as the spacing between vias and pads, the spacing between traces and traces, etc., which should be considered. . So today we will divide these spacing requirements into two categories, one is: electrical safety spacing; the other is: non-elect...

The manufacture of flexible PCBs involves several complicated steps, and extreme care must be taken. Some design or manufacturing defects can cause the entire circuit board to fail. During the PCB manufacturing process, please follow the precautions listed below: 1. Use the right type and quantity of materials to maint...

The choice of components and the size of the PCB are interdependent. Therefore, when choosing the right components for rigid flexible printed circuit boards (PCBs) or other types of PCBs, the footprint of the PCB must also be considered. The package is the basic layout of the PCB. It includes electrical and mechanical ...

Learning to contact a new technology will always encounter various problems, and learning EMC is no exception. EMC includes two parts: EMS and EMI. Generally speaking, solving the EMC problem is actually solving the external radiation interference of electronic equipment, or how to prevent the equipment and electronic ...

White light LED is a voltage-sensitive device. In actual work, the current is 20mA as the upper limit, but the current will often increase due to various reasons in use. If no protective measures are taken, this increased current The LED will be damaged after a certain time and range. The main reasons for LED damage ar...

History has fixed in the minds of membrane-switch engineers the belief that 100 ohms is the maximum circuit resistance they should build into their products. The ability to achieve this low level of circuit resistance was made possible through the availability of highly conductive silver inks with volume resistivities ...

The more mechanical items like wires, cable, conenctors and switches also require circuit symbols. Although, in some respects they do not always contribute to the circuit operation in the same way as resistors, capacitors and active devices, they are nevertheless equally important and have their circuit symbols. There ...

This articles shows how to read circuit diagrams for beginners in electronics. Learn to read electrical and electronic circuit diagrams or schematics. A drawing of an electrical or electronic circuit is known as a circuit diagram, but can also be called a schematic diagram, or just schematic. Circuit or schematic diagr...