first of all please sorry if my question would sound dumb, I'm new to electrical engineering I've did my first soldering of two wires just yesterday. So here goes the question: I have 5V 60A LED DC power supply (also I have lab. i.e. variable voltage dc power supply which I use for testing things).
I'd like to adapt my 5V 60A power supply to a general purpose USB charger station with multiple USB docks, I have several female USB wires. And I guess that making a USB charger out of 5V supply is something more than just soldering plus to plus (red to red wire) and minus to minus (black to black), which I already did and it didn't worked.
What has to be done in order to make a USB charger out of 5V power supply and a female USB cable.
Thank you in advance
Best Answer
There is nothing more than just soldering 5V(+) to 5V(+) and GND(-) to GND(-) .
USB uses also 5V so there is no need for any aditional circuitry.
The only thing you may want to do (which isnt necessary) is to use pullup or pulldown resistors on the data lines because many smartphones uses this to detect how much current they can draw from the power adapter.
Using pullup or pulldown resistors means that you connect a resistor from 5V(+) or GND(-) to one of the data pins (Usually they are white and green when you use an old USB Cable). But you would need to search online for the resistor value. But that is not necessary, just optional