0
votes
3answers
112 views

Three-prong / USB power outlets in wooden desk [closed]

I am trying to mount a strip of three-prong outlets and a strip of USB charging outlets on an old wooden desk. I can handle the carpentry aspect, but I am struggling with the electrical aspect. I ...
-1
votes
2answers
103 views

Multiple 2A USB Mains powered chargers [closed]

I'd like to know why there are no mains-powered chargers that can charge multiple usb devices at, say, 2A and 1A? I'm after something that can charge 2 tablets that ask for 2A and 2 phones on 1A, so ...
3
votes
1answer
719 views

3.3V Power Failover Supply with USB Li-Ion Charger

I am currently designing a "3.3V@500mA Power Failover Supply with Integrated USB Li-Ion Charger" for a uC project. I want the circuit to draw power straight from USB power when available & switch ...
0
votes
0answers
285 views

Can anyone recommend aUSB charging circuit that gives 600mA charge rate for a mobile device?

I need to build a 5V 600mA USB charge circuit for a device I want to build for my hobby project. Does anyone have a simple circuit design I can use to do this? It will be charging a Lithium cell with ...
4
votes
3answers
817 views

What happens if you charge a laptop using it's USB power?

To play a joke on this question, we came up with the following image on the Super User Chat. Of course this will not work, but now my question is: What happens if you charge a laptop using it's ...