Smartphone's battery durability is always the user's problem, many users love machine is equipped with a mobile power for himself, to solve the power shortage problem. Mobile power when the battery runs out, if away from home is not charging what should I do? Little thought is solar power, but little wants to play the spirit of DIY, solar panels with side into things together, charge the phone in times of emergency. Do it, mark? Michael Kors case for Note 4
Small selection of Shenzhen Tong carried out every day, solar panels can be found on Taobao, won't go into detail here.
Dimensions and as a normal bank card for Shenzhen Tong, is standard 85x54mm, small selection of solar panels come in two widths, a 26mm, a 52mm. Each solar cell voltage 0.5V, to reach the phone needs 5V voltage output at least 10 blocks of solar panels in series, divided into two rows. Following are small drawings of the machine before you start drawing:
Shenzhen Tong affixed with double-sided adhesive foil on the back, and then on the solar panels a drop 502 glue, to be posted on the Shenzhen Tong (Note location of drops of glue do not hinder the panels and copper contacts), first completed panels:
Solar panels are blue positive is negative, the back is positive, measuring voltage with multimeter try:
0.381V, 0.5V rated voltage output had not been met, it seems one or two more blocks.
Then other panels put up a piece on the positive pressure in the first negative, tiles like a piece, the first row a total of 5 blocks, measuring a voltage (next to the strip of panels are used to connect the first and second rows):
2.06V, average per 0.4V.
Then put the rest of the tail stuck panels, with a total of 11 panels.
Another problem is that post to generate the electric field will affect the induction of Shenzhen Tong? So to the next subway station tried it, and found to be normal:
USB connector to do next, a small hand on without a USB HUB, have plenty of joints can be broken down by:
Sub HUB by small, small iron undersized, split when some trouble:
Checked the USB interface definition, only on the edge of two-pin plug in the power supply, left-right, wiring not connected backwards:
Removed the USB interface to handle, cut the middle two pins, saw out a slot happened to be on the Shenzhen Tong card:
Plug the USB interface on the Shenzhen Tong card, defined by the USB interface, cathode and copper connections.
Then you can use off-the-shelf USB cable connection, a voltage measurement, standard 5.00V:
Then there's the film, PE film is photo laminator, cut a mouth, through copper foil, just on the negative in a few films.
Pressure effect of film:
In theory, at this point, the card can be a temporary power for mobile power supply. But in fact this "DIY solar mobile power" also has two flaws:
1. the current smaller, indoor photography the light of measured current is 20mA or so, so full now of about 2000mAh mobile takes 100 hours;
2. There is no backflow, you should also add a diode prevents current to flow back into the batteries in the battery on board not only fully into the power but battery is less and less. Michael Kors Note 4
Due to the time constraint, small machine "Shenzhen Tong mobile power" has to end here. Would also like to say a small machine, such a transformation in the DIY spirit of fun, really useful and mobile power supply. However, if you are interested in it, may wish to follow the steps above to make small, maybe when can use it!
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