[Renaud] built a AC power meter from scratch. While commercial power meters like the Kill A Watt are available [Renaud’s] build gives an interesting insight into the methods used. At the heart of ...

Utility power meters often must rely on a current transformer for polyphase applications. Current transformers have drawbacks: They are relatively expensive, require additional copper wiring, and can ...

GE Digital Energy announces a new family of ITI Outdoor Medium Voltage (MV) Instrument Transformers that includes voltage and current instrument transformers in the 15kV, 25kV, and 34.5kV class GE ...

Smart power meters can be used to show your real time electricity consumption, help with load management and transformer monitoring, and power monitoring. Smart power meters can save you time and ...

If your goal is to save on electricity, you must first measure the ac current flowing through your appliances. The formula for power is the product of the ac line voltage and the measured current.

The Tegam Gemini 5540A achieves two-sigma accuracy of ±0.5% + 0.5 W for precise in-line RF power measurement and control. Integrating a power sensor and meter into a single instrument, the Gemini ...

As USB-C PD becomes more and more common, it’s useful to have a tool that lets you understand exactly what it’s doing—no longer is it limited to just 5 V. This DIY USB-C PD tool, sent in by [ludwin], ...