Symmetric blocking transient voltage suppressor (TVS) using...

Details Symmetric blocking transient voltage suppressor (TVS) using... Symmetric blocking transient voltage suppressor (TVS) using...

2011-08-16

2011-08-16

Pham, Ly D (Department: 2827)

Static information storage and retrieval

Interconnection arrangements

Transistors or diodes

C365S177000, C365S189060

Reexamination Certificate

active

08000124

ABSTRACT:
A symmetrical blocking transient voltage suppressing (TVS) circuit for suppressing a transient voltage includes an NPN transistor having a base electrically connected to a common source of two transistors whereby the base is tied to a terminal of a low potential in either a positive or a negative voltage transient. The two transistors are two substantially identical transistors for carrying out a substantially symmetrical bi-directional clamping a transient voltage. These two transistors further include a first and second MOSFET transistors having an electrically interconnected source. The first MOSFET transistor further includes a drain connected to a high potential terminal and a gate connected to the terminal of a low potential and the second MOSFET transistor further includes a drain connected to the terminal of a low potential terminal and a gate connected to the high potential terminal.

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patent: 2007/0279824 (2007-12-01), Mallikararjunaswamy
patent: 2008/0048215 (2008-02-01), Davies

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