Martin Lorton] has a vintage Harmon 4200B selective voltmeter that needed repair. He picked it up on eBay, and he knew it wasn’t working, but it was in good condition, especially for the ...

The 4200B is an RMS voltmeter and is selective because it has a tuned circuit to adjust to a particular frequency. The unit uses discrete components and has an analog meter along with an LCD counter.

Explore the world of RF directional couplers and their role in precise microwave measurements for engineers and designers.

If your car battery frequently drains without any apparent cause, it's probably down to faulty wiring or a component drawing ...

Discover why your battery keeps draining when not in use, common causes, and effective solutions. Learn how to diagnose, fix, ...

Assembly requires common maker tools such as a soldering iron, solder wire, pliers, a multimeter, safety goggles and gloves. Components attach securely ... build skills in electronics basics, ...

A manufacturer’s perspective on determining parts layout.

MIT researchers have physically demonstrated the strongest nonlinear light-matter interaction in a quantum system to date.

A team partially replaced lithium in a lithium antimonide compound with the metal scandium. This creates specific gaps, so-called vacancies, in the crystal lattice of the conductor material. These ...

Vishay Intertechnology, Inc. has introduced a new AEC-Q200 qualified thick film power resistor in the compact, low profile ...