Hello everyone, I am Engineer Wang. Today, let’s learn about a company, named: Rockchip Electronics Co., Ltd. (“Rockchip”, stock code: 603893). The reason for introducing this company is that their chips are widely used, and in the embedded field, there are very few hardware engineers who are unaware of them. 011 Introduction Our daily routine … Read more
Another Breakthrough: Successful Tape-Out of 2nm Chip In this rapidly evolving technological era, every step of innovation has the potential to change the landscape of the entire industry. Recently, a groundbreaking achievement by World Semiconductor has undoubtedly injected a shot of adrenaline into the global semiconductor industry — they have successfully tape-out the world’s first … Read more
The image below marks the position of the DDR2 chips that were cut open. We can see that there are dense traces inside the new foam. The BGA solder balls are marked in red. This is a 6-layer board, with the positions of the TOP, BOTTOM, and the four internal electrical layers already indicated. Since … Read more
Can you believe it? A fist-sized mesh bag, when placed in a pool of gold salt solution overnight, can absorb dozens or even hundreds of grams of gold, and the secret lies in the specially made mesh bag. Astonishingly, seven workers stole 8 kilograms of gold over a year, netting over 2 million yuan. This … Read more
PCB Thermal Design: A Comprehensive Analysis from Theory to Practice Thermal issues are often the “Achilles’ heel” of many electronic products, especially in modern PCB designs with high integration and high power consumption. I remember a project I took on last year for an industrial control board, where the main chip had a power consumption … Read more
Metal is applied to exposed pads using an organic coating, known as surface treatment. The surface finish protects copper pads from scratches and oxidation while facilitating soldering in a reflow oven. Although there are various types of surface treatments, ENIG and ENEPIG are two common types. Manufacturers typically use them for ceramicPCBs, flexible boards, and … Read more
1: By Layer Count Circuit boards can be classified by layer count into three main categories: single-sided boards, double-sided boards, and multi-layer boards. First, single-sided boards have components concentrated on one side and traces on the other. Since traces only appear on one side, this type of PCB is called a single-sided circuit board. Single-sided … Read more
The charging pile circuit board is the core component of the charging pile, responsible for functions such as power conversion, control, communication, and safety protection. Below is a detailed analysis of the charging pile circuit board:1. Main Functional ModulesPower Module (AC/DC or DC/DC conversion):Converts grid AC power (AC) to DC power (DC) for battery charging … Read more
Recently, our mine’s self-developed voice circuit board has broken the technical barrier that prevented the free recording of voice warning messages in the mine, enabling personalized recording of various voice warning messages, effectively enhancing the safety of the mine. Voice warnings are an important technical means for preventing safety accidents in mines. Previously, the content … Read more
