Static electricity protective circuit and high-frequency...

Details Static electricity protective circuit and high-frequency... Static electricity protective circuit and high-frequency...

2008-09-30

2008-09-30

Jackson, Stephen W (Department: 2836)

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

C361S056000

Reexamination Certificate

active

10937490

ABSTRACT:
A static electricity protective circuit for use in a high-frequency apparatus for protecting, against static electricity, an internal circuit connected to a signal terminal through which a high-frequency signal and a DC signal are superimposed and transmitted, comprises a high-frequency cut-off element having one end thereof connected to the signal terminal, and a Schottky barrier diode having a cathode thereof connected to other end of the high-frequency cut-off element and an anode thereof connected to ground, wherein the high-frequency cut-off element and the Schottky barrier diode cut off the high-frequency signal and the DC signal respectively and lead static electricity applied to the signal terminal to ground so as to protect the internal circuit against the static electricity.

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