Abstract: Historically, analog null meters have been used to determine zero voltage conditions in metrological applications. When digital multimeters (DMMs) became available with resolution comparable ...

We earn commissions from purchases you make using links in our articles. Learn more. Anyone who works on their car should have a multimeter, but they come in handy around the house too. Whether you ...

Discover how to make a homemade battery capable of charging your smartphone using simple materials like copper foil, aluminum foil, and saltwater. This step-by-step DIY battery project demonstrates ...

Learn how to create a simple DIY electrical generator using a few easy-to-find materials. This step-by-step video guides you through making a homemade generator, including winding a copper coil, ...

Abstract: In many industrial applications, digits on instrument display need to be automatically identified. In this paper, we propose a new feature extraction method based on non-luminous digital ...

School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, People’s Republic of China ...