Using a MEMS-based parallel-plate capacitor arrangement, NIST researchers devised a way to measure mid-range laser power via the radiation pressure exerted on the mirrored top plate and the resulting change in capacitance between plates.
After initial setup of your cell tester, or when it undergoes repairs, it’s important to make sure the tester delivers the proper results and that its safe by troubleshooting not only the fixture, but also the wiring.
The physical kilogram, the last of the physical primary-standard artifacts, has been made obsolete. The world’s metrology and standards organization voted to define all physical standards in terms of just seven universal constants.
Inductors and transformers serve key roles in switch-mode power supplies. Ensuring they perform as expected requires thorough in-circuit measurements performed under operating conditions. Here’s what you need to know.