The warping or bending of PCB boards is usually caused by one or several of the following reasons: 1. Temperature changes: Variations in temperature can cause thermal expansion or contraction of the PCB board. If the two sides of the board are not subjected to the same thermal influence, it can lead to warping or … Read more
The PCB (Printed Circuit Board) is the core carrier of electronic devices, and soldering is the key process that fixes components such as resistors, capacitors, and chips, ensuring circuit connectivity, which directly determines the performance and reliability of the device. Mainstream Soldering Processes 1. Wave Soldering: Suitable for through-hole components (THD). The PCB passes through … Read more
The most challenging aspect of handcrafted circuit boards lies in the wiring of the circuits. Most existing technologies can only utilize planar wiring principles, making it difficult to adopt three-dimensional wiring, indicating that this is also a direction for development. Below is a sound-controlled clap switch circuit, which can be constructed with just thirty components. … Read more
As we all know, a fully functional electrical device requires a good circuit board, quality components, and a plastic or metal casing, along with switches, etc. Today, we will hand-wire a PCB layout ourselves. This circuit is quite simple, requiring only basic series and parallel connections, along with a four-transistor microphone amplifier, which does not … Read more
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This article includes how to use jumpers for repairs/modifications on printed circuit boards and electronic components to achieve electrical connectivity between two points. The article aims to lay the foundation for adding jumpers during the repair/modification process. Tools, materials, and supplies: PCB support Cleaner Precision tool set Soldering iron Wiping cloth Wire Wire points Wire … Read more
Nash Bell President of BEST, Inc. Since the late 1990s, Ball Grid Array (BGA) packaging has become the preferred packaging method for electronic devices. Compared to high-density ultra-fine pitch Quad Flat Packs (QFP), BGA packaging can significantly reduce the footprint required on the PCB by approximately 50%. Integrating standard BGA and its stacked counterparts, known … Read more
▼Click the card below to follow our public account ▼Although online PCB manufacturing has become very fast and inexpensive, with some manufacturers offering free test board production, sending out for board fabrication still takes too long compared to making test circuit boards in “one minute”.For circuits that need testing, rapid prototyping allows for quick iterations … Read more
Analysis: If there is no WiFi, first measure the voltage at C5202_RF; it should be 3.8V. If not, connect a wire from another point to C5202_RF, then measure C5204_RF for 1.8V. If that is also absent, short R5208_RF, check and replace L5201_RF, and replace the WiFi module at C5202_RF! If the WiFi signal is weak, … Read more
Click on the title below “Yingchuangli” to quickly follow Air bubbles generated during PCBA soldering, commonly referred to as voids, typically occur during the reflow soldering and wave soldering processes in PCBA manufacturing. So, how can we prevent air bubbles during PCBA soldering? 1. Baking Bake PCBs and components that have been exposed to air … Read more