Computational circuit for transforming an analog input voltage into attenuated output current proportional to a selected transfer function
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United States of America Patent
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Jul 14, 1992
Grant Date -
N/A
app pub date -
Apr 9, 1990
filing date -
Apr 9, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An analog computational circuit, for transforming an input voltage into an output voltage or current variable according to a selected transfer function, including a plurality of current sources having a common input and a common current output. Each of the current sources is energizable in response to an input voltage as it exceeds a selected input voltage threshold associated with each of the current sources. There are means coupled to the current sources for establishing the input voltage threshold associated with each of the current sources. Also included are means coupled to each of the current sources for establishing the selected transfer function of the computational circuit. Each of the current sources is adapted to begin conducting current in response to an input voltage which exceeds its associated input voltage threshold, and to provide an attenuated output current proportional to the input voltage, the proporation established by the selected transfer function. The analog computational circuit is integratable into other circuits.
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