Spring is coming to the northern hemisphere, and soon it’ll be nice enough outside to tool around town on your bicycle. But bikes don’t have power outlets, so phone charging on the go will require ...

Figure 8 depicts an electrical vehicle climbing an incline moving forward (top) or in reverse (bottom). When the vehicle rolls downhill it will turn the motor pressed by the force of gravity so the ...

In a powertrain fitted with eTorque, a belt-driven motor-generator unit replaces the conventional alternator on the engine. This motor-generator unit performs several functions in addition to the ...

Many cars will soon have 48-volt electrical systems. They'll power stop-start motors, hybrid motors, and turbochargers, allowing for smaller engines with better fuel economy and performance. They'll ...

The word "hybrid" means many things. It can be interpreted as "high gas mileage," or "annoying leftie smugmobile," or--by engineers--an automotive powertrain that uses two different sources to ...

Any stepper motor can be used as a generator. In contrast to other generators, a stepper motor produces a large induced voltage even at low rotational speeds. The type used here, with a DC resistance ...