The Sonoff doesn’t use the ESP’s ADC pins, so he’s broken one of them out on a lead to a current transformer which captures the power level being consumed by the washing machine. The Sonoff ...

and for AC you could use a current transformer. But the advent of the Hall-effect sensor has provided us a much better way of measuring currents. Hall sensors offers several advantages over shunts ...

With electrical load expected to skyrocket, two transformer manufacturers are combining forces to meet the growing demand for ...

Transformers will only work with an alternating current (ac) input. This transformer steps up the voltage by reducing the current. Step-down transformers are used to decrease or 'step down' voltages.