The antenna’s design was largely based on trial-and-error; the current setup with a 7 cm x 3 cm piece of aluminium sheet seemed to work well.

The small meter, an upgrade from a previous Arduino version that is now based on the ESP32, is capable of assessing root mean square (RMS) voltage, RMS current, active power, power factor, and ...

December 23, 2013. Onset has announced a series of high-performance, split-core current transformers for measuring AC current and amperage in commercial building energy audits ...