Primary/secondary wireless protector
AssigneeIllinois Tool Works Inc.
InventorMohammad Masghati
Life of this patent
Estimating the term…
Abstract
A primary/secondary surge protector circuit for protecting telecommunications equipment from power and surge transients includes a printed circuit board and a surge protector circuit. The surge protector circuit is mounted on the printed circuit board. The printed circuit board has tip and ring conductive traces formed on its top surface. The surge protector circuit includes a voltage suppressor operatively coupled to the tip and ring conductive traces. The tip and ring conductive traces define fusible links which are opened when an excessive current is passed through so as to meet the specifications set forth by UL Standards 497 and 497A.
Claims17
A primary/secondary surge protector circuit for protecting telecommunications equipment and the like from power and transient surges, comprising:
- a printed circuit board;
- surge protector means;
- said surge protector means being mounted on said printed circuit board;
- said printed circuit board having at least one tip conductive trace formed on its surface and extending between an input terminal pin and a first internal node and having at least one ring conductive trace formed on its surface and extending between an input ring terminal pin and a second internal node;
- said surge protector means including voltage suppressor means operatively connected to said tip conductive trace at said first node and to said ring conductive trace at said second node;
- said tip and ring conductive traces defining fusible links which are opened when an excessive current is passed therethrough;
- and
- each of said tip and ring conductive traces having a first wider section, a second narrow section, and a third wider section, said second narrow section being interconnected between said first and third wider sections.
A primary/secondary surge protector circuit for protecting telecommunications equipment and the like from power and transient surges, comprising:
- a printed circuit board;
- surge protector means;
- said surge protector means being mounted on said printed circuit board;
- said printed circuit board having at least one tip conductive trace formed on its surface and extending between an input terminal pin and a first internal node and having at least one ring conductive trace formed on its surface and extending between an input ring terminal pin and a second internal node;
- said surge protector means including voltage suppressor means operatively connected to said tip conductive trace at said first node and to said ring conductive trace at said second node;
- said surge protector means further including a first heat coil operatively connected also to said first internal node downstream of said tip conductive trace and a second heat coil operatively connected also to said second internal node downstream of said ring conductive trace;
- said tip and ring conductive traces defining fusible links which are opened when an excessive current is passed therethrough;
- and
- each of said tip and ring conductive traces having a first wider section, a second narrow section, and a third wider section, said second narrow section being interconnected between said first and third wider sections.
A primary/secondary surge protector circuit for protecting telecommunications equipment and the like from power and transient surges, comprising:
- a tip conductive trace formed on a surface of a printed circuit board;
- a ring conductive trace formed also on the surface of the printed circuit board;
- voltage suppressor means operatively connected between said tip and ring conductive traces for conducting in response to an excessive voltage applied across said tip and ring conductive traces;
- said tip and ring conductive traces defining fusible links which are opened when an excessive current is passed therethrough;
- and
- each of said tip and ring conductive traces having a first wider section, a second narrow section, and a third wider section, said second narrow section being interconnected between said first and third wider sections.
Dependencies are inferred from the claim text.