A generator. This can replace a battery as a power source. A generator converts movement energy into electrical energy like a turbine. A circuit diagram helps electrical engineers know what to build.

This circuit diagram shows the same circuit ... can be used to measure the potential difference produced by a cell or battery. The potential difference across a component can be measured by ...

A researcher at the University of Wisconsin-Madison has developed a groundbreaking computational model that provides new insights into the causes of lithium-ion battery failure. “Fast-charging lithium ...

“No problem!” you exclaim. “I’ll just use a USB battery pack!” But the current draw is too low, and the pack won’t stay on. “Blast!” you exclaim, because you’ve been watching too ...