Definition: Voids in solder joint, refers to holes, bubbles, gaps, open pockets, empty spaces, inside of the solder joint. Solder void is typically generated by entrapped gasses/vapour or paste flux residues, that were not able to emit/release from solder joint during the reflow process.   What factors might cause solder voiding: ● Solder Paste ● Stencil ● PCB Surface Finish ●...

Abstract In response to a ground power-off fault in the AC power supply system of a certain type of aircraft, the macroscopic morphology of the printed circuit boards inside the AC generator controller was examined. SEM and EDS analyses, as well as ion chromatography tests, were carried out to determine the fault location and cause. Through principle review and fault...

In today’s world, television is more than just a screen—it’s part of daily life. Whether you’re streaming your favourite series, engaging in remote work, helping children with online classes or simply relaxing after a long day, how the screen affects your eyes matters. The 40-inch version of the Metz MQF7000 2K QLED TV offers more than just strong...

In the competitive world of modern television technology, not every viewer needs a massive 75-inch 4K display or a home theater setup that costs thousands. Sometimes, the smartest choice lies in balance—a TV that blends high-quality visuals, immersive sound, and smart functionality at an affordable price. That’s exactly what the Metz MQF7000 2K QLED TV 40 Inch achieves....

Introduction: Why Substrate Choice Defines PCB Performance The performance, reliability, and lifespan of modern electronics depend heavily on one foundational choice—the PCB substrate material. While FR4 remains the most widely used material for general-purpose circuit boards, it faces limitations in high-power, high-temperature, and high-frequency environments. In...

Contents: Abstract 0. Introduction 1. Related Work 2. System Design and Implementation 3. Experimental Results and Analysis 4. Conclusion References     Abstract To address the challenges of high computational cost and poor adaptability in complex environments when detecting printed circuit board (PCB) defects on edge devices, a lightweight automatic detection...

When shopping for a new TV, it’s easy to get lost in technical jargon—resolution numbers, HDR standards, color gamuts. But the Metz MQF7000 2K QLED TV goes beyond being just a screen in your living room. Designed under the idea of “4K Look, 2K Price”, it combines Quantum Dot visuals, Dolby-enhanced sound, Google TV smart features, and eye-care...

On June 10, the Hami–Chongqing ±800kV ultra-high-voltage direct current (UHVDC) transmission project — a key component of China's national energy strategy — was officially put into operation. As one of the 102 major projects outlined in the 14th Five-Year Plan and a vital part of the "Xinjiang electricity to Chongqing" initiative, the project plays a significant role in...

In the world of high-precision metalworking and industrial machining, the efficiency and durability of cutting tools are vital to ensuring quality, speed, and cost-effectiveness. One critical innovation that significantly enhances tool performance is the coolant hole rod—particularly the straight coolant hole rod, a key component used in the production of advanced cutting tools such...

In the world of high-precision manufacturing, tool performance is everything. Whether it's aerospace components, medical instruments, or automotive parts, efficiency, accuracy, and durability are non-negotiable. One innovation that has played a pivotal role in improving machining performance is the straight coolant hole rod—a vital feature in modern carbide tooling.As a highly specialized...