Portable compact multiple-outlet power supply with circuit for supplying device-specific charging profiles to mobile telephones

1. A device for conveniently charging multiple electronic devices atop a table or countertop, comprising in combination:

a generally cube-shaped electrically non-conducting housing;

a power supply, wherein the power supply functions as an AC step transformer and as a rectifier to supply a DC voltage;

a circuit board electrically connected to the power supply;

at least one USB circuit operationally connected to the circuit board;

at least one USB outlet, wherein each respective at least one USB outlet is electrically connected to a respective at least one USB circuit;

a plurality of three-prong power outlets electrically connected to the power supply;

wherein the at least one USB circuit further comprises:

a voltage source;

a first node electrically connected to the voltage source;

a second node;

a first resistor electrically connected to the first node and to the second node;

a third node electrically connected to ground;

a second resistor electrically connected to the second node and to the third node;

a fourth node;

a third resistor electrically connected to the third node and to the fourth node;

a first test point electrically connected to the fourth node;

a fourth resistor electrically connected to the first node and to the fourth node;

a second test point electrically connected to the second node;

a USB connector defining the at least one USB outlet and having a first pin, a second pin, a third pin, a fourth pin, a fifth pin and a sixth pin;

wherein the first pin is electrically connected to the voltage source;

wherein the second pin is electrically connected to the fourth node;

wherein the third pin is electrically connected to the second node;

wherein the fourth, the fifth and the sixth pins are electrically connected to ground;

wherein the voltage source is a 5V DC output from the power supply; and

wherein a USB male connector is engagable with the at least one USB outlet to receive power therefrom.

2. An apparatus for providing electrical power, the apparatus comprising:

an electrically non-conductive generally cube-shaped housing consisting of a base and cover;

an electrical power supply operationally connected and positioned in the housing;

a circuit board positioned within the housing and connected to the power supply;

a first plurality of power outlets electrically connected to the power supply for connecting three-prong plugs;

a second plurality of power outlets for connecting male USB connectors;

a power cord operationally connected to the power supply and containing a distal end for engaging a wall outlet to conduct electricity to the power supply and supplies DC power to second plurality of power outlets;

wherein the power cord has a proximal end and wherein the power supply has a connector for receiving the proximal end in electric communication;

wherein the generally cube-shaped housing consisting of a base and cover is around 4.5 inches by about 2.75 inches;

wherein the power supply functions as a transformer and rectifier for converting AC input to lower voltage DC output;

wherein the circuit board is operationally connected to the power supply to receive transformed and rectified power;

wherein the circuit board further comprises at least one USB power circuit; and

wherein the at least one USB power circuit further comprises:

a voltage source;

a first node electrically connected to the voltage source;

a second node;

a first resistor electrically connected to the first node and to the second node;

a third node electrically connected to ground;

a second resistor electrically connected to the second node and to the third node;

a fourth node;

a third resistor electrically connected to the third node and to the fourth node;

a first test point electrically connected to fourth node;

a fourth resistor electrically connected to the first node and to the fourth node;

a second test point electrically connected to the second node;

a USB connector having a first pin, a second pin, a third pin, a fourth pin, a fifth pin and a sixth pin;

wherein the first pin is electrically connected to the voltage source;

wherein the second pin is electrically connected to the fourth node;

wherein the third pin is electrically connected to the second node;

wherein the fourth, the fifth and the sixth pins are electrically connected to ground;

wherein the voltage source is a 5V DC output from the power supply; and

wherein USB male connectors are engagable with the USB connector to receive power therefrom.

3. The device of claim 2 , wherein the first resistor has a resistance of about 75K Ohms; wherein the second resistor has a resistance of about 50K Ohms; wherein the third resistor has a resistance of about 50K Ohms; and wherein the fourth resistor has a resistance of about 38K Ohms.