fresh bytes
Subscribe Now

South Korea’s magnet-powered bullet train has taken its first ride

train.jpg

To get up to top speed, bullet trains have to pull a huge amount of electrical current from the grid. typically through unsightly overhead power lines. But this newly debuted train prototype from South Korea sucks up electricity invisibly from the tracks below.

Developed through a collaboration of the Korea Advanced Institute of Science and Technology and The Korea Railroad Research Institute, this bullet train is the first rail vehicle utilize wireless power transmission…

And though it only topped out at a pokey 4 km/h (that’s about 2.5 mph, slower than most folks walk) along a 492-foot long track in Uiwang, Gyeonggi last Tuesday, the prototype train could one day hit speeds of 400 km/h (250 mph). Researchers also estimate that such a system could reduce maintenance costs by more than half by eliminating the tangled web of existing overhead power lines.
via Gizmodo

Continue reading 

Image:  JoongAng Daily

Leave a Reply

featured blogs
Apr 24, 2026
A thought experiment in curiosity, confusion, and cosmic consequences....

featured paper

Quickly and accurately identify inter-domain leakage issues in IC designs

Sponsored by Siemens Digital Industries Software

Power domain leakage is a major IC reliability issue, often missed by traditional tools. This white paper describes challenges of identifying leakage, types of false results, and presents Siemens EDA’s Insight Analyzer. The tool proactively finds true leakage paths, filters out false positives, and helps circuit designers quickly fix risks—enabling more robust, reliable chip designs. With detailed, context-aware analysis, designers save time and improve silicon quality.

Click to read more

featured chalk talk

GaN for Humanoid Robots
Sponsored by Mouser Electronics and Infineon
In this episode of Chalk Talk, Eric Persson and Amelia Dalton explore why power is the key driver for efficient and reliable robot movements and how GaN technologies can help motor control solutions be more compact, integrated and efficient. They also investigate the role of field-oriented control in humanoid robotic applications and why the choice of a GaN power transistor can make all the difference in your next humanoid robot project!
Apr 20, 2026
9,964 views