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how do I diy my own solar charger without a battery? Answered

I would like to build my own small  solar charger but I don't want to have a solar panel charge a battery and have that battery charge my phone. I want just the panel>buck converter>iPhone charger all in one.

Tags:solar

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Downunder35m

3 years ago

Check Wiki for the USB charging standards.
Get a solar panl that fits your needs.
Connect and setup the electronics.
Place in direct sun and connect phone.

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scout0001 Downunder35m

Answer 3 years ago

Thanks but not what I'm looking for. imagine if you just have an iphone cord right and instead of the outlet end you replace that with the solar panel. Can that done

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Downunder35mscout0001

Answer 3 years ago

Ok, more specific, but still you can do the actual detail search (easy) :
Check the Wiki pages for the USB charging standards - or do a Google search for the voltages on the Data lines for proper Apple charging.
Get a good quality 12V panel that is capable of at least 1A if you are happy with a slow charge - 2.5A should be enough for quite a quick charge in full sun.
Get a quality step down converter 12V to 5V.
Connect converter and panel with a suitable fuse.
On the output of the converter goes the circuit that provides the correct voltages on the Data lines for you rotten fruit - if you don't do this it will only charge with 100mA!
The output of this circuit connects to your USB cable connecting the phone with power ;)
If you want to use the solar panel more usable provide a switchable output for 12V (charging car battery, campnig equippment...) and two USB ports.
One USB port with the electronics on the Data lines for Apple, the other to the normal USB charging specs.
Both can be powered by the same step down converter.
This way you have an universal solar powered charger ;)

Using the 12V output and a solar charge controller you can even charge a 12V deep cycle battery and use it for a more powerful USB charging.
It also prevents the loss of charging when there is a cloud ;)
To do this you simply go this way:
Solar panel, Solar Batter Charge controller, battery.
And instead of connecting the above directly to the panel you connect the stepdown converter and electronics to the battery ;)

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scout0001 Downunder35m

Answer 3 years ago

you guys have been super helpful I got about 85% of my question answered but that small component is with the usb output. Can you hard wire just my apple cord straight to the converter. so the only thing at the end is a apple lightning connector to charge the phone? Where can I find good website to find super super small step down converters and diode?

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icengscout0001

Answer 3 years ago

Hey guy ... that is what Downunder said.

The phone plugs into a solar panel .... its that easy !

The only thing, you don't need a Huge house panel but one only 15% more then what your phone needs.

BTW in case you don't understand .... your phone wont charge when a cloud blocks the sun or at night. Solar panel uses Sun light to make the electricity, so less sun less electricity !

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Josehf MurchisonDownunder35m

Answer 3 years ago

+1 but add a storage capacitor for surges in start up and shut down of the charging process.