MONITORING UNIT FOR SIGNALLING A SPECIFIC CONDITION IN THE CIRCUITRY SUPPLYING POWER TO AN ELECTRICAL DEVICE
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Abstract
A MONITORING UNIT FOR SIGNALLING A SPECIFIC CONDITION IN THE POWER SUPPLY CIRCUITRY FOR AN ELECTRICAL DEVICE. THE UNIT HAS THREE TERMINALS. A FIRST SIGNALLING DEVICE IS CONNECTED BETWEEN THE FIRST AND THIRD TERMINALS. A SECOND SIGNALLING DEVICE IS CONNECTED BETWEEN THE SECOND AND THIRD TERMINALS. A THIRD SIGNALLING DEVICE IS CONNECTED BETWEEN THE FIRST AND SECOND TERMINALS. A BIASING CIRCUIT IS CONNECTED BETWEEN THE FIRST AND THIRD TERMINALS SO THAT THE MONITORING UNIT WILL ISSUE A SIGNAL INDICATING ONLY A SPECIFIC CONDITION IN THE POWER SUPPLY CIRCUITRY. THE MONITORING UNIT IS HOUSED IN A HOUSING.
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Current AssigneeNole L. Walters
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Original AssigneeNole L. Walters
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InventorsWalters, Nole L.
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Application NumberUS04/704,176Time in Patent Office1,083 DaysField of SearchUS Class Current340/649CPC Class CodesG01R 19/16547 voltage or current in AC su...
