Last month's Code Calculations article covered transformer calculation definitions and some specifics of delta transformer calculations. This month we turn our attention to the differences between ...

A farmer is watering an alfalfa field 24 hours a day using a 3-phase 100-hp electric motor and adjustable speed drive (ASD). The farmer checks on his field to find the water not flowing and the pump ...

In the original version of this article, the second figure contained an error. The image has been updated. It’s important for engineers to have a good, working ...

The ADE7880 is a high accuracy, 3-phase electrical energy measurement IC with serial interfaces and three flexible pulse outputs. The ADE7880 device incorporates second order sigma-delta (Σ-Δ) ...

This product is featured in EDN's Hot 100 products of 2015. See all 100 here. The ADE7933/ADE7932 are isolated, 3-channel sigma-delta analogue-to-digital converters (S-? ADCs) for polyphase energy ...

One of the hidden complications of upgrading grain drying and handling systems is providing enough electricity to power the new larger electric motors. Electric motors that are larger than 15 hp ...

One of the more popular three-phase electrical services supplied to medium-size commercial buildings is the Wye or Star configuration transformer. The name comes from the transformer’s secondary ...