Combining Cor Van Rij's JFET test socket with two DMMs, a current limiter, switches and a wall wart yield a simple, accurate ...

Car batteries often appear to fail without warning because the early stages of deterioration do not produce symptoms that ...

A power monitor is a great way to find out what sent your electric bill through the roof, but it has limitations. Here's how ...

When three resistors are connected in series to a battery, they form a simple yet fundamental circuit that demonstrates key ...

Scientists have directly measured the minuscule electron sharing that makes precious-metal catalysts so effective. Their new technique, IET, reveals how molecules bind and react on metal surfaces with ...

A 94-year-old female with history of hypertension, chronic kidney disease, and hyperlipidemia presents to the emergency ...

Battery testers are among the most valuable tools in any automotive repair shop, whether it’s work at a dealership service department, an independent repair facility, or maintaining a fleet. They help ...

Power strips are convenient when you’re short on wall outlets, but there are some things you should never plug into one.