If you're looking to take the plunge into the world of ESP32 devices, then here's a basic overview of what you need to know.

This paper presents SD-card-size wireless power transfer system for large-volume contactless memory cards. Voltage is boosted simultaneously with power transfer, which eliminates the dc-dc converter ...

Due to the significance of extracting the grid voltage information, the grid synchronization system plays an important role in the control of grid-connected power converters, and various grid voltage ...

I test portable power stations, and this Jackery model is perfect for emergencies and power outages or camping trips -- and it's on sale for Amazon Prime Day.