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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Application filed by Matsushita Electric Works LtdfiledCriticalMatsushita Electric Works Ltd
Priority to JP13885876ApriorityCriticalpatent/JPS5362550A/en
Publication of JPS5362550ApublicationCriticalpatent/JPS5362550A/en
PURPOSE: To increase the detection region and moving object measuring distance of an ultrasonic alarm by providing such circuit configurations wherein the adder which makes phase control loop unstable where outputs are small is removed.