Dual power supply system
AssigneeHon Hai Precision Industry Co., Ltd.
InventorHENG-CHEN KUO
Life of this patent
Estimating the term…
Abstract
An exemplary dual power supply system includes a first sensor connected to a first power supply, a second sensor connected to a second power supply, a selection switch, a control circuit, and a relay switch. Each of the output terminals of the first sensor, the second sensor, and the selection switch are connected to a corresponding input terminal of the control circuit. The first and the second power supplies are connected to an electronic device via the relay switch. A control terminal of the relay switch is coupled to an output terminal of the control circuit for selectively coupling the first or the second power supply to the electronic device according to a control signal generated by the control circuit.
Claims12
A dual power supply system comprising:
- a first sensor having a detecting terminal connected to a first power supply and an output terminal to send a first power signal;
- a second sensor having a detecting terminal connected to a second power supply and an output terminal to send a second power signal;
- a selection switch having an output terminal to send a selection signal;
- a control circuit having three input terminals connected to the output terminals of the first sensor, the second sensor, and the selection switch respectively, and an output terminal to send a control signal;
- and
- a relay switch having two throws connected to the first and the second power supplies respectively, a pole connected to an electronic device, and a control terminal connected to the output terminal of the control circuit for selectively coupling the pole to one of the throws thereby coupling the first or second power supply to the electronic device according to the control signal.
A dual power supply system comprising:
- a main power supply and a backup power supply;
- a control circuit comprising a first input terminal connected to the main power supply via a first sensor and configured to receive a status signal of the main power supply from the first sensor, a second input terminal connected to the backup power supply via a second sensor and configured to receive a status signal of the backup power supply from the second sensor, a third input terminal connected to a selection switch for receiving a selection signal from the selection switch, and an output terminal to output a control signal, the control signal being achieved by arithmetic performed on the status signals of the main and backup power supplies and the selection signal;
- and
- a relay switch configured to receive the control signal from the output terminal of the control circuit, and select the main power supply or the backup power supply to supply power to an electronic device according to the control signal.
A dual power supply system comprising:
- a first power supply and a second power supply;
- a control circuit comprising a plurality of logical gates, a first input terminal connected to the first power supply via a first sensor and configured to receive a status signal of the first power supply from the first sensor, a second input terminal connected to the second power supply via a second sensor and configured to receive a status signal of the second power supply from the second sensor, a third input terminal connected to a selection switch for receiving a selection signal therefrom, and an output terminal configured to output a control signal achieved by arithmetic performed on the status signals of the power supplies and the selection signal by the gates;
- and
- a relay switch having two throws connected to the first and the second power supplies respectively, a pole connected to an electronic device, and a control terminal connected to the output terminal of the control circuit for selectively coupling the pole to one of the throws thereby coupling the first or second power supply to the electronic device according to the control signal.
Dependencies are inferred from the claim text.