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SOLAR USB/5 V SUPPLY

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This is a simple project to get a power supply or charger for most of the usb devices or cell phones .

I used a 18 volts solar panel , though many people here will recomend you to use 9 volts solar panel
Advantage of 18volts panel is that you will get the voltage and required charging current even in the dim light ,(if you use smaller voltage panels , though you get voltage , the current may be too less)


 
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Step 1: CIRCUIT DIAG

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BEST AND EASIES WAY TO HAVE T REGULATED 5 VOLTS , IS TO USE A CHEAP 7805 VOLT REG 

Step 2:

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things required are
1. 7805 ic------------1    cost about 0.4 usd
2. 10mf cap --------2    
3. soldering iron and plain solder board  ,cost about 3 usd
 
If you like to add a LED , then one led and 3k ohm resistor 1/4w. 
Please take care of the polarity , ie , positive of capacitor connected to + of supply .same for LED too.

Step 3:

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Mount the devices on the solder board , so that you can adjust and re position the devices for proper gap and soldering as per circuit.

Step 4:

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Solder the devices , and then cut the excess solder board

Step 5:

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Finally cut the other part of solder board , just by bending on the table sharp edge

Step 6:

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Bottom of the soldered circuit will look some thing like this ,
Note , i made a small loop so that i can hook the wire to it , so that i need not have to solder and de solder again.
Hook I made from LED wire , which is very strong , and easy to solder . 

Step 7:

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Now your circuit is ready and will look similar to this ,
you can keep this in a small box or on a wooden board  to be safe .
Igor225 months ago

I have a 7805CT,can i use it for this project?

BLR_RAVI (author)  Igor225 months ago
YES , any ic with 78xx can be used
wilgubeast7 months ago
Excellent macro photography. Your images are clear and easy to follow, especially the annotations you made on the bottom view of the circuit.
BLR_RAVI (author)  wilgubeast7 months ago
Thanks Wil, for your nice words.
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