Semiconductor device

Details Semiconductor device Semiconductor device

2010-03-02

2010-12-28

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including protection means

Reexamination Certificate

active

07859341

ABSTRACT:
A current limiting circuit is connected to the gate (input terminal) of an amplifying transistor. The current limiting circuit includes a protecting transistor, a first protecting resistor connecting the drain to the gate of the protecting transistor, and a second protecting resistor connecting the source to the gate of the protecting transistor. The current limiting circuit limits current, so that electric power larger than the maximum electric power allowable for the amplifying transistor does not pass.

REFERENCES:
patent: 5268649 (1993-12-01), Jones
patent: 7388429 (2008-06-01), Ui
patent: 7701296 (2010-04-01), Inoue et al.
patent: 2007/0052481 (2007-03-01), Newman et al.
patent: 1 764 713 (1971-10-01), None
patent: 4-31782 (1992-02-01), None

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