Test & Measurement World now has a LinkedIn group. Yesterday, John Kirk, Research Engineer at Raymond Corporation posted the following question. Here’s my problem: measuring voltage accurately. That ...

For the first time researchers have run an electrical circuit entirely off power in trees. The findings suggest a new power source for wireless sensors -- and a way to monitor tree health.

The custom boost converter works for input voltages of as little as 20 millivolts and produces an output voltage of 1.1 volts, enough to run low-power sensors.

They inserted an aluminum-nitride insulating layer into a conventional energy-harvesting chip based on ZnO and found that the added layer increased the output voltage a whopping 140 to 200 times (from ...

A description of the electronics in an electrocardiograph and what signals they measure to produce the “leads” on an ECG strip chart or video display.

In fact, researchers at the Massachusetts Institute of Technology found that plants can pack up to 200 millivolts of electrical power. A millivolt is one-thousandth of a volt.