3C Electronics

Are You Using the Multimeter Correctly? Let This Guide Help Every Engineer!

by
Are You Using the Multimeter Correctly? Let This Guide Help Every Engineer!

Click Mechanical Frontier” Follow for Updates Leading the Mechanical Frontier, Mechanical Videos, Automotive, Processing Technology, 3D Printing, Automation, Robotics, Production Processes, Bearings, Molds, Machine Tools, Sheet Metal, and other industry frontiers await you here A multimeter, also known as a multi-tester, is a multifunctional and multi-range measuring instrument. Generally, a multimeter can measure DC current, … Read more

Post-95s Young Man Creates Affordable Drone Using Chopsticks!

by
Post-95s Young Man Creates Affordable Drone Using Chopsticks!

130,000 Likes! A Young Man Born After 1995 Creates an Affordable Drone Using Chopsticks‌When the creativity of a tech enthusiast meets takeout chopsticks, a wave of “imaginative innovation” brings laughter to the internet! A 28-year-old from Dezhou, Shandong, named Xiao Zhao, built a drone that can fly up to 70 meters high using disposable chopsticks, … Read more

How Beginners Can Quickly Understand Circuit Boards – A Share of Practical Experience

by
How Beginners Can Quickly Understand Circuit Boards - A Share of Practical Experience

When I first encountered electronic systems, I could only practice soldering and was eager to understand circuit boards, but I struggled to grasp the essentials. Later, in the lab and after starting my job, as I accumulated experience in hardware design and debugging, combined with guidance from experienced experts around me, I gradually understood circuit … Read more

The Secrets of Multimeters You Didn’t Know

by
The Secrets of Multimeters You Didn't Know

The reason a multimeter can measure current, voltage, and resistance lies in its use of a sensitive galvanometer. When a small current passes through the meter, the needle will indicate a value. However, the galvanometer cannot directly handle large currents, so it is necessary to connect some resistors in parallel or series with the galvanometer … Read more

Modifying the Universal Multimeter

by
Modifying the Universal Multimeter

This is a new model of the Nanjing Kehua MF47-F multimeter. Upon opening the back cover, it is easy to notice that compared to the old model, the most obvious difference is that the function switch section has adopted a rotating buckle design. After a thorough examination, I recently made a few modifications to achieve … Read more

Comparative Analysis of PCB Ceramic Circuit Boards: ENIG vs ENEPIG

by
Comparative Analysis of PCB Ceramic Circuit Boards: ENIG vs ENEPIG

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

Young Innovator Creates Affordable Drone Using Chopsticks, Receives 130,000 Likes!

by
Young Innovator Creates Affordable Drone Using Chopsticks, Receives 130,000 Likes!

Reporter: Liang YajiaNews Hotline: 0771-5690127Tip-off Email: [email protected] Recently, A young man from Dezhou, Shandong, born in the 1990s, named Zhao posted a video of a drone he made using chopsticks as the body, which attracted the attention of netizens. The drone costs only a few dozen yuan, and Zhao completed it in just 3 days … Read more

Creating an Oscilloscope Using a Television

by
Creating an Oscilloscope Using a Television

Back in 1989, when I couldn’t afford an oscilloscope but really wanted one, I searched through all the bookstores in the county and finally found a schematic for making an oscilloscope using a television. After building it, I used it for many years. Now, finished oscilloscopes are everywhere, and I don’t know which mouse has … Read more

Summary of National Standards for Printed Circuit Boards (PCBs) in China

by
Summary of National Standards for Printed Circuit Boards (PCBs) in China

Printed circuit boards (PCBs) are the core components of electronic products, and their manufacturing and quality control are crucial for the healthy development of the entire electronics industry. To better regulate the PCB market, the Chinese government has established a series of relevant national standards. Below is a list of common PCB national standards, which … Read more