System and method for providing surge protection

摘要

Methods and systems described herein provide protection for sensitive circuits against power surges on power lines. A surge protector for protecting a load coupled to a power source is provided. The surge protector includes an input having a first node, a second node and a third node to respectfully couple to line, neutral, and ground connections of a power source, an output having a fourth node, a fifth node, and a sixth node for respectfully coupling to line, neutral and ground connections of the load, a first voltage limiting circuit coupled between the fourth node and the fifth node, a first inductor coupled between the first node and the fourth node, and a second voltage limiting circuit coupled between the first node and the second node.

主权项

1. A surge protector for protecting a load coupled to a power source, the surge protector comprising:
an input having a first node, a second node and a third node to respectfully couple to line, neutral, and ground connections of a power source; an output having a fourth node, a fifth node, and a sixth node for respectfully coupling to line, neutral and ground connections of the load; a first voltage limiting circuit coupled between the fourth node and the fifth node; a first inductor coupled between the first node and the fourth node; and a second voltage limiting circuit coupled between the first node and the second node, the second voltage limiting circuit including a first gas discharge tube, and a resistive device coupled in series with the first discharge tube, wherein the resistive device comprises a positive temperature coefficient resistor.