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 ...

AEMC's Sentinel Current Data Loggers are a new line of loggers that record true RMS measurements of current parameters. The current loggers include integral flexible current probes for three-phase ...

Murata Power Solutions has introduced the DATEL DMS-20RM series of voltmeters that can measure the true-rms value of complex ac voltages and, with an input frequency range of 47 - 1kHz. It is ideal ...

The circuit in Figure 1 measures both the true-rms value and the rectified average value of an ac signal. This design uses two low-cost ICs in SOIC packages and consumes only 180 µA of quiescent ...

Said to be accurate, fast, and rugged enough for field applications, the MA24106A, USB-powered sensor measures true-RMS power, regardless of the input signal or bandwidth, over a dynamic range of 63 ...