H - Electricity – 03 – C
Patent
H - Electricity
03
C
328/166
H03C 1/00 (2006.01) H02J 13/00 (2006.01) H03K 5/24 (2006.01)
Patent
CA 1082781
WINDOW COMPARATOR Abstract of the Disclosure The present invention relates to a window comparator. The comparator is comprised of a first circuit which has a pair of differential circuits interconnected at their inputs and outputs and interconnected with a pair of current sources and responsive to a differential input signal for conducting two dependently variable currents through different sides to an output circuit. The current sources each conduct I units of current to a different one of the pair of differential circuits a different voltage dropping element is connected to each current source in the input circuit for establishing two limits of the window comparator. An output circuit is comprised of a current mirror which has a pair of conducting paths, each respectively one of the variable currents from the input circuit. The output circuit is responsive to one side of the input circuit conducting more than a predetermined multiple of the current from the other side for indicating that the magnitude of the differential input signal exceeds one of the two limits.
338247
Kirby Eades Gale Baker
Western Electric Company Incorporated
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