Three-Day Test for the 2026 IMSA Rolex 24 Begins Today

A total of 38 cars are expected for this weekend’s IMSA WeatherTech SportsCar Championship test, to be held at Daytona ...
IEEE

Equivalent Circuit Model for Simulating ESD Discharge Current in ESD Damage Test

Abstract: Electrostatic discharge (ESD) damage evaluation methods for common mode choke (CMC) and ESD suppression devices are standardized in IEC 62228-5 Annex E and Annex F, respectively. The ...

This Is the Second-Most-Expensive Vintage Wristwatch Ever Sold at Auction

Take a closer look at the record-setting Patek Philippe 1518—plus four more winners from the biggest auction weekend of 2025.

Inside the Highest-Grossing Watch Auction in History

Phillips's Decade One earned $83 million this weekend, with a Patek Philippe ref. 1518 helping to make it the ...
IEEE

Improved Model-Free Predictive Current Control for Suppressing Inverter Nonlinearity and Parametric Time-Varying of PMSM Drive Systems

Abstract: To improve the control performance of permanent magnet synchronous motor (PMSM) drive systems, an improved model-free predictive current control based on extended state observer (ESO) with ...