Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1996-01-10
1998-09-29
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327 78, 327170, 327379, 348623, H02N 5217, H03K 1716
Patent
active
058150110
ABSTRACT:
A circuit provides an output signal having a portion with a constant maximum amplitude, followed by a portion decreasing down to a constant zero value when an input voltage increases from zero. The circuit includes an asymmetrical differential stage having a low gain branch and a high gain branch, respectively controlling two branches of a symmetrical differential stage. The current of the asymmetrical differential stage corresponds to the end of the decreasing portion. The current of the symmetrical differential stage corresponds to the maximum amplitude of the signal which is provided by one of the branches of the symmetrical differential stage. The high gain branch and low gain branch are respectively controlled by the input voltage and by a voltage corresponding to the beginning of the decreasing portion.
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Callahan Timothy P.
Carlson David V.
Donohue Michael J.
Englund Terry L.
SGS-Thomson Microelectronics S.A.
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