USB Charging Circuit
$6.00 Regular price
A handy DC to USB assembled circuit that we use to make our Altoids USB chargers. You can use it too. Takes DC power from as low as 2V and bumps it up to the 5V USB needs at around 600mA (0.6A) of current.
This circuit works fine with most USB products out there. While we can't test out every USB product in the world we can say with some confidence that it works with the these products below.
- Apple Products (we don't recommend using it with iPads)
- Garmin GPS
- Android Phones
- Arduino and Arduino Clones
- To be honest, most anything that charges with USB
- Note: While it will send power to a tablet, it'll be too slow to make much of a difference. You won't be happy with outcome.
This is the same circuit we use with our various Solar USB kits. For practical uses, you'll need at a minimum a 3AA battery pack. Using a 3.7V Lithium Battery is a far better option, however you will need a charge controller.