AC voltage adapter with integrated DC voltage power supply connector

• US 6,172,891 B1
• Filed: 03/26/1999
• Issued: 01/09/2001
• Est. Priority Date: 03/26/1999
• Status: Expired due to Term

• Current Assignee: Dell USA LP (Dell Technologies Inc.)
• Original Assignee: Dell USA LP (Dell Technologies Inc.)
• Inventors: Liao, Reynold, OʼNeal, Sean P.
• Primary Examiner(s): NGUYEN, MATTHEW VAN
• Application Number:
  US09/277,863
• Time in Patent Office: 655 Days
• Field of Search: 363/142, 363/143, 363/146, 307/116, 307/125, 307/128, 307/130
• US Class Current: 363/146
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: H02M 1/10 Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc

Abstract

A computer system operable on a DC voltage is provided. The computer system includes a microprocessor, a system memory coupled to the microprocessor, a bus coupled to the microprocessor, an input device coupled to the bus, and a voltage adapter system for providing a DC voltage to the computer system. The voltage adapter system includes a voltage modifying device adapted for converting an AC voltage to a DC voltage. A first cable assembly is electrically connected to supply the AC voltage from an AC power supply to the voltage modifying device. A second cable assembly is provided for selectively supplying the DC voltage to the system from the voltage modifying device or from a remote DC voltage power supply. The second cable assembly is connectable at a first end to the system and connectable at a second end to the voltage modifying device and to the remote DC voltage power supply.

Claims

1. A voltage adapter system for use with a DC voltage operable device and a remote DC voltage power supply, comprising:

a voltage modifying device for converting an AC voltage to a DC voltage;

a first cable assembly for electrically coupling an AC power supply to the voltage modifying device;

a second cable assembly having a first connector for being electrically coupled to the DC voltage operable device and a second connector for being electrically coupled to the remote DC voltage power supply, the first connector being electrically coupled to the second connector and to the voltage modifying device; and

a voltage switch electrically coupled between the first and second connectors and being responsive to the AC voltage to electrically decouple the first connector from the second connector.

5. The voltage adapter system of claim 1 wherein the second cable assembly includes a first cable and a second cable.

6. The voltage adapter system of claim 5 wherein the first connector is electrically coupled to the first cable and the second connector is electrically coupled to the second cable.

7. The voltage adapter system of claim 5 wherein the first and second cables are electrically coupled to the voltage modifying device.

2. A voltage adapter system for use with a DC voltage operable device and a remote DC voltage power supply, comprising:

a voltage modifying device for converting an AC voltage to a DC voltage;

a first cable assembly for electrically coupling an AC power supply to the voltage modifying device;

a second cable assembly having a first connector for being electrically coupled to the DC voltage operable device and a second connector for being electrically coupled to the remote DC voltage power supply, the first connector being electrically coupled to the second connector and to the voltage modifying device; and

the voltage modifying device including a voltage regulating portion for maintaining the DC voltage supplied to the DC voltage operable device at a prescribed voltage level and wherein the first connector is electrically coupled to the second connector through the voltage regulating portion.

14. The voltage adapter system of claim 2 wherein the first and second cables are electrically coupled to the voltage modifying device.

3. A voltage adapter system for use with a DC voltage operable device and a remote DC voltage power supply, comprising:

a voltage modifying device for converting an AC voltage to a DC voltage;

a first cable assembly for electrically coupling an AC power supply to the voltage modifying device;

second cable assembly having a first connector for being electrically coupled to the DC voltage operable device and a second connector for being electrically coupled to the remote DC voltage power supply, the first connector being electrically coupled to the second connector and to the voltage modifying device; and

the voltage modifying device including a voltage switch, the voltage switch being electrically coupled between the first and second connectors and being responsive to the AC voltage to electrically decouple the first connector from the second connector.

4. A voltage adapter system for use with a DC voltage operable device and a remote DC voltage power supply, comprising:

a voltage modifying device for converting an AC voltage to a DC voltage;

a first cable assembly for electrically coupling an AC power supply to the voltage modifying device;

a second cable assembly having a first connector for being electrically coupled to the DC voltage operable device and a second connector for being electrically coupled to the remote DC voltage power supply, the first connector being electrically coupled to the second connector and to the voltage modifying device; and

the voltage modifying device including a voltage converting portion and a voltage regulating portion, the voltage regulating portion being electrically coupled between the voltage switch and the second connector and being adapted to maintain the DC voltage supplied to the DC voltage operable device at a prescribed voltage level.

8. A computer system operable on a DC voltage, said computer system comprising:

a microprocessor;

a system memory coupled to the microprocessor;

a bus coupled to the microprocessor;

an input device coupled to the bus; and

a voltage adapter system for providing a DC voltage to the computer system, the voltage adapter system, comprising;

a voltage modifying device for converting an AC voltage to a DC voltage;

a first cable assembly for electrically coupling an AC power supply to the voltage modifying device;

a second cable assembly having a first connector for being electrically coupled to the DC voltage operable device and a second connector for being electrically coupled to the remote DC voltage power supply, the first connector being electrically coupled to the second connector and to the voltage modifying device; and

a voltage switch electrically coupled between the first and second connectors and being responsive to the AC voltage to electrically decouple the first connector from the second connector.

12. The voltage adapter system of claim 8 wherein the second cable assembly includes a first cable and a second cable.

13. The voltage adapter system of claim 12 wherein the first connector is electrically coupled to the first cable and the second connector is electrically coupled to the second cable.

9. A computer system operable on a DC voltage, said computer system comprising:

a microprocessor;

a system memory coupled to the microprocessor;

a bus coupled to the microprocessor;

an input device coupled to the bus; and

a voltage adapter system for providing a DC voltage to the computer system, the voltage adapter system, comprising;

a voltage modifying device for converting an AC voltage to a DC voltage;

a first cable assembly for electrically coupling an AC power supply to the voltage modifying device;

a second cable assembly having a first connector for being electrically coupled to the DC voltage operable device and a second connector for being electrically coupled to the remote DC voltage power supply, the first connector being electrically coupled to the second connector and to the voltage modifying device; and

the voltage modifying device including a voltage regulating portion for maintaining the DC voltage supplied to the DC voltage operable device at a prescribed voltage level and wherein the first connector is electrically coupled to the second connector through the voltage regulating portion.

10. A computer system operable on a DC voltage, said computer system comprising:

a microprocessor;

a system memory coupled to the microprocessor;

a bus coupled to the microprocessor;

an input coupled to the bus; and

a voltage adapter system for providing a DC voltage to the computer system, the voltage adapter system, comprising;

a voltage modifying device for converting an AC voltage to a DC voltage;

a first cable assembly for electrically coupling an AC power supply to the voltage modifying device;

second cable assembly having a first connector for being electrically coupled to the remote DC voltage power supply, the first connector being electrically coupled to the second connector and to the voltage modifying device; and

the voltage modifying device further including a voltage switch, the voltage switch being electrically coupled between the first and second connectors and being responsive to the AC voltage to electrically decouple the first connector from the second connector.

11. A computer system operable on a DC voltage, said computer system comprising:

a microprocessor;

a system memory coupled to the microprocessor;

a bus coupled to the microprocessor;

an input coupled to the bus; and

a voltage adapter system for providing a DC voltage to the computer system, the voltage adapter system, comprising;

a voltage modifying device for converting an AC voltage to a DC voltage;

a first cable assembly for electrically coupling an AC power supply to the voltage modifying device;

a second cable assembly having a first connector for being electrically coupled to the DC voltage operable device and a second connector for being electrically coupled to the second connector and to the voltage modifying device; and

the voltage modifying device further including a voltage converting portion and a voltage regulating portion, the voltage regulating portion being electrically coupled between the voltage switch and the second connector and being adapted to maintain the DC voltage supplied to the DC voltage operable device at a prescribed voltage level.

15. A voltage adapter system for use with a DC voltage operable device and a remote DC voltage power supply, comprising:

a voltage modifying device for converting an AC voltage to a DC voltage, the voltage modifying device having a mating socket electrically coupled thereto;

a first cable assembly for coupling an AC voltage power supply to the voltage modifying device;

a second cable assembly having a first connector for being electrically coupled to the DC voltage operable device and having a second connector removably coupled to the mating socket of the voltage modifying device, the second connector being connectable to a respective mating socket of the remote DC voltage power supply; and

a voltage switch electrically coupled between the first and second connectors and being responsive to the AC voltage to electrically decouple the first connector from the second connector.

16. A computer system operable on a DC voltage, said computer system comprising:

a microprocessor;

a system memory coupled to the microprocessor;

a bus coupled to the microprocessor;

an input coupled to the bus; and

voltage adapter system for providing a DC voltage to the computer system, the voltage adapter system, comprising;

a voltage modifying device for converting an AC voltage to a DC voltage, the voltage modifying device having a mating socket electrically coupled thereto;

a first cable assembly for coupling an AC voltage power supply to the voltage modifying device;

a second cable assembly having a first connector for being electrically coupled to the DC voltage operable device and having a second connector removably coupled to the mating socket of the voltage modifying device, the second connector being connectable to the respective mating socket of the remote DC voltage power supply; and

a voltage switch electrically coupled between the first and second connectors and being responsive to the AC voltage to electrically decouple the first connector from the second connector.

17. A voltage adapter system for use with a DC voltage operable device and an in seat power supply in an aircraft, comprising:

a voltage modifying device for converting an AC voltage to a DC voltage, the voltage modifying device including a voltage regulating portion maintaining the DC voltage supplied to the DC voltage operable computing device at a prescribed voltage level;

a first cable assembly for electrically coupling an AC power supply to the voltage modifying device;

a second cable assembly having a first connector for being electrically coupled to the DC voltage operable device and a second connector for being electrically coupled to the in-seat power supply, the first connector being electrically coupled to the second connector and to the voltage modifying device, the first connector being electrically coupled to the second connector through the voltage regulating portion; and

a voltage switch electrically coupled between the first and second connectors and being responsive to the AC voltage to electrically decouple the first connector from the second connector.

18. The voltage adapter system of claim 17 wherein the second cable assembly includes a first cable and a second cable.

19. The voltage adapter system of claim 18 wherein the first connector is electrically coupled to the first cable and the second connector is electrically coupled to the second cable.

20. The voltage adapter system of claim 18 wherein the first and second cables are electrically coupled to the voltage modifying device.