High voltage protection circuit

Details High voltage protection circuit High voltage protection circuit

2006-05-18

2008-08-05

Richards, N. Drew (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C327S308000, C333S08100R, C361S088000, C361S091100

Reexamination Certificate

active

07408396

ABSTRACT:
Disclosed is a circuit to provide protection from an over voltage signal. The circuit protects against load dumps or positive transients applied to any electronic unit. The circuit isolates the protected circuitry from the transient voltage by two ways. The circuit limits the current flow and clamping the voltage using a small package zener diode. Additionally, the circuit causes a specific voltage drop between the applied transient and the protected circuit.

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patent: 6670724 (2003-12-01), Ely et al.
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patent: 6882513 (2005-04-01), Laraia
patent: 7250804 (2007-07-01), Brindle
patent: 2004/0052022 (2004-03-01), Laraia

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