As mentioned i have a circuit that transmits data through light(VLC) and receives it through phototransistor. The aim is to transfer a file from one PC to another PC hence we used a serial port DB9 ...
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 ...
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