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

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

2006-09-30

2009-06-30

Pham, Ly D (Department: 2827)

Static information storage and retrieval

Systems using particular element

Semiconductive

C365S072000, C365S189060, C327S310000

Reexamination Certificate

active

07554839

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: 2006/0066408 (2006-03-01), Fang et al.
patent: 2007/0279824 (2007-12-01), Mallikararjunaswamy

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