Martin Lorton] has a vintage Harmon 4200B selective voltmeter that needed repair. He picked it up on eBay, and he knew it wasn’t working, but it was in good condition, especially for the ...

Explore the world of RF directional couplers and their role in precise microwave measurements for engineers and designers.

Abstract: The equivalent circuit model (ECM) is widely used in lithium-ion battery management systems because of its well-balanced simplicity and accuracy. However, it remains unclear whether the ECM ...