On infrequent occasions, I am asked to design a circuit to measure the RMS value of a current or voltage for some kind of power measurement. Since the work I do is hardly unique, I thought some of you ...

Application note 1392 will help you understand the different techniques a DMM uses to make RMS measurements, how the signal affects the quality of your measurements, and how to avoid common ...

If you mostly deal with DC current, you might not think much of root mean square or RMS measurements. Sure, you’ve seen meters that have “true RMS” settings, but what does it mean? If you don’t know — ...

Directional couplers are used in a wide variety of applications to sense RF power, and they may appear at multiple points in a signal chain. In this article, we will explore Analog Devices’ ADL5920, ...

Models 670 and 675 true-rms clamp-on meters are designed to measure and display amps and volts simultaneously. The meters also feature auto-ranging capability and provide enhanced measurement range ...

Extech Instruments has introduced the MA620 (AC) and MA640 (AC/DC) 600 A true RMS clamp meters. The affordable new clamp meters are compact and easy to hold while offering an ample 1.5" (40 mm) jaw ...