Here is the indicative schematic circuit diagram of the usb charger doctor, drawn by me. Voltage measured at various points, when powered by my lab power supply (dialed to 5.0 Vdc), is also included ...

Here is a tried and tested sample circuit of a Li-Ion battery charger that can be used to charge any 3.7V Li-Ion battery using a 5VDC (USB, Solar Panel…) power supply. At the heart of the circuit is ...

Jaymi Heimbuch is a writer and photographer specializing in wildlife conservation, technology, and food. She is the author of "The Ethiopian Wolf: Hope at the Edge of Extinction." The craftster ...

The charger's single-input interface selects ... Integrated 50-mA LDO supplies power to external circuits, such as a USB transceiver 4. Production test mode regulates 4.2-V output without battery ...