Power transmission line equipped with a protection circuit

• US 20060291118A1
• Filed: 06/28/2005
• Published: 12/28/2006
• Est. Priority Date: 06/28/2005
• Status: Abandoned Application

• Current Assignee: Topower Computer Industrial Company Limited (Topower Computer)
• Original Assignee: Topower Computer Industrial Company Limited (Topower Computer)
• Inventors: Chen, Michael
• Application Number:
  US11/167,199
• Publication Number:
  US 20060291118A1
• Time in Patent Office: Days
• US Class Current: 361/91.1
• CPC Class Codes: H02H 9/042 comprising means to limit the absorbed power or indicate damaged over-voltage protection device

Abstract

A power transmission line equipped with a protection circuit includes a power transmission line bridging a power supply to provide DC and a load driven by the DC. The power transmission line has a power line equipped with a protection circuit. The protection circuit can open the power line or interrupt a closed circuit or temporarily suspend power supply to the load when an over-current or over-voltage condition occurred to the DC so that the load is protected from being overloaded and damaged.

Claims

1. A power transmission line equipped with a protection circuit comprising a power transmission line between a power supply to provide DC and a load driven by the DC, wherein:

the power transmission line has a protection circuit on a power line, the protection circuit opening the power line or interrupting a closed circuit or temporarily suspending electric supply to the load when a DC over-current or over-voltage condition occurs to prevent the load from being overloaded and damaged.

2. The power transmission line equipped with a protection circuit of claim 1, wherein the protection circuit has at least one over-current protection element coupled in series with the power line.

3. The power transmission line equipped with a protection circuit of claim 2, wherein the over-current protection element is a fuse.

4. The power transmission line equipped with a protection circuit of claim 1, wherein the over-current protection element is a PolySwitch.

5. The power transmission line equipped with a protection circuit of claim 1, wherein the protection circuit has an over-voltage protection element coupled with two electric conductive lines of the power line in series.

6. The power transmission line equipped with a protection circuit of claim 5, wherein the over-voltage protection element is a Varistor.

7. The power transmission line equipped with a protection circuit of claim 5, wherein the over-voltage protection element is a ZNR.

8. The power transmission line equipped with a protection circuit of claim 5, wherein the over-voltage protection element includes a Zener and a SCR.