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This is a charger for lithium ion batteries which takes its power from the USB port of a computer. It uses the MCP73861 or MCP73863 Li-ion battery charger ...
A piece of edge connector hacked off an ancient ethernet board serves as the power connector. To make it, cut off a piece that includes four edge fingers, ...
The circuit board is a piece of single sided copper clad board. A hole is cut inside it so that it will accommodate the integrated circuit. The MCP73861 ...
The area around the ic is tinned and the solder pads joined to the board with bits of wire. I find it helpful to flatten the wire with ...
The various components, as detailed in the data sheet for the ic (available from the web site of Microchip Technology) was then soldered in position. The two LEDs ...
It is attached to the USB plug so that it can be plugged as a unit into the USB port of a computer, and the battery connected with ...
The charger is shown attempting to charge a mobile phone battery.Li-ion batteries come in various flavours - single cell, double cell, coke anode, graphite anode etc. Each has ...
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