Although there are several ways to sense current flowing from a source such as a battery, or to a load such as a motor, the current-sense resistor is among the most widely used approaches. There are ...

Resistor: A passive chunk of material that resists the flow of electrical current. A terminal is connected to each end you’re done. What could be simpler? It turns out it’s not so simple at all.

Power resistors come in all shapes, sizes, resistances and power ratings. Power ratings of discrete power resistors range from about 1W to 2.5kW. Resistances generally range from 0.01Ω to 100K. They ...