# US 8,149,570 B2 · Universal power supply system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,149,570 B2 - Document ID: US8149570B2 - Status: Granted - Kind: B2 - Application number: 12/726,630 - Filed: 2010-03-18 - Published: 2011-09-22 - Granted: 2012-04-03 - Earliest claimed: 2010-03-18 - Inventors: John C. Keebler; C. Stephen Keebler - Web page: https://patentgrep.com/patent/US8149570B2 ## CPC - H02J 1/102: being switching converters (H02J1/108, H02J1/12 take precedence) - H02J 1/08: Three-wire DC power distribution systems; Systems having more than three wires - H02J 2105/44: Portable electronic devices - H02J 2207/40: adapted for charging from various sources, e.g. AC, DC or multivoltage - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract A universal power supply system having a power supply configured to generate a predetermined direct current output sufficient to simultaneously power a plurality of direct current powered devices connected thereto. A plurality of identical sockets are electrically coupled in parallel with the direct current output of the power supply. Individual power cables having a standardized first plug which fits into the sockets at one end and a device specific second plug at an opposing end. A voltage regulating circuit is operatively disposed in either the standardized first plug or device specific second plug which converts the intermediate direct current voltage generated by the power supply to a direct current voltage required by a particular direct current powered device. ## Claims ### Claim 1 A universal power supply system comprising: a power supply configured to generate a predetermined direct current output sufficient to simultaneously power a plurality of direct current powered devices coupled thereto; a plurality of sockets electrically coupled in parallel with the direct current output of the power supply; a plurality of power cables, each power cable having a first plug and a second plug connected at opposing ends; the first plug adapted to couple with at least a portion of the plurality of sockets; the second plug adapted to be received by a socket specific to at least one of the plurality of direct current powered devices; a voltage regulating circuit disposed in either the first or second plug, the voltage regulating circuit adapted to provide an output voltage compatible with the at least one direct current powered device. ### Claim 2 (depends on 1) The universal power supply system of claim 1 wherein the power supply outputs a uniform direct current voltage to each of the plurality of sockets. ### Claim 3 (depends on 1) The universal power supply system of claim 1 wherein the voltage regulating circuit is configured to adjust the voltage generated by the power supply to the compatible voltage of the direct current powered device. ### Claim 4 (depends on 1) The universal power supply system of claim 1 wherein each of the plurality of sockets are identical. ### Claim 5 (depends on 1) The universal power supply system of claim 1 wherein one of the first or second plug is color-coded to correspond with a particular voltage output. ### Claim 6 (depends on 5) The universal power supply system of claim 5 wherein one of the first or second plug is further color-coded to correspond with a particular voltage polarity. ### Claim 7 (depends on 1) The universal power supply system of claim 1 wherein one of the first or second plug is marked with indicia of a particular output voltage. ### Claim 8 (depends on 1) The universal power supply system of claim 1 wherein the direct current power supply receives an input voltage from an external source. ### Claim 9 (depends on 1) The universal power supply system of claim 1 wherein the external source is an alternating current outlet. ### Claim 10 (depends on 1) The universal power supply system of claim 1 wherein the external source is a vehicular battery. ### Claim 11 A universal power supply system comprising: a housing containing a power supply configured to generate a predetermined direct current output sufficient to simultaneously power a plurality of direct current powered devices coupled thereto; a plurality of uniformly dimensioned sockets disposed in a wall of the housing and electrically coupled in parallel with the direct current output of the power supply; a plurality of power cables, each power cable having a first plug and a second plug connected at opposing ends; the first plug adapted to couple with any of the plurality of sockets; the second plug adapted to be received by a socket specific to at least one of the plurality of direct current powered devices; a voltage regulating circuit disposed in either the first or second plug, the voltage regulating circuit adapted to provide an output voltage compatible with the at least one direct current powered device. ### Claim 12 (depends on 11) The universal power supply system of claim 11 wherein the second plug is dimensioned to correspond with a particular voltage output. ### Claim 13 (depends on 11) The universal power supply system of claim 11 wherein the power supply includes a electrical load sensing circuit for adjusting output power in dependence on electrical demand. ### Claim 14 (depends on 11) The universal power supply system of claim 11 wherein the power supply generates a voltage at least two volts greater than any voltage required to power the at least one direct current powered device. ### Claim 15 (depends on 13) The universal power supply system of claim 13 wherein the electrical load sensing circuit reduces power generated by the power supply to minimize wasted energy generation. ### Claim 16 (depends on 11) The universal power supply system of claim 11 wherein one of the first or second plug is marked with indicia specific to the at least one direct current powered device. ### Claim 17 (depends on 11) The universal power supply system of claim 11 wherein the plurality of sockets are arranged in an array. ### Claim 18 A universal power supply system comprising: a regulated switching power supply for generating a predetermined direct current output sufficient to simultaneously power a plurality of direct current powered devices coupled thereto; a plurality of uniformly dimensioned sockets electrically coupled in parallel with the direct current output of the power supply; a plurality of power cables, each power cable having a first plug and a second plug connected at opposing ends; the first plug adapted to couple with any of the plurality of sockets; the second plug adapted to be received by a socket specific to at least one of the plurality of direct current powered devices; a voltage regulating circuit disposed in either the first or second plug, the voltage regulating circuit adapted to provide an output voltage compatible with the at least one direct current powered device; a electrical load sensing circuit coupled to the regulated switching power supply for adjusting output power in dependence on electrical demand. ### Claim 19 (depends on 18) The universal power supply system of claim 18 wherein the powers cables convey only electrical power to the at least one direct current powered device. ### Claim 20 (depends on 18) The universal power supply system of claim 18 wherein the number of uniformly dimensioned sockets exceeds five. ### Claim 21 (depends on 18) The universal power supply system of claim 18 wherein the universal power supply system operates without a separate feedback line.