Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1996-06-28
1997-12-23
Gaffin, Jeffrey A.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
361656, H01C 712
Patent
active
057012270
ABSTRACT:
An electrically powered annunciating system, for use in electrical panel boxes, having a sensing circuit including a first acoustical transducer to transmit a sonic signal to an annunciating circuit baring a second acoustical transducer at a spaced distance from the first transducer to operate the annunciating circuit responsive to a sonic signal received from the first transducer. The sensing circuit powers the first acoustical transducer to produce a sonic signal responsive to a sensed electrical event such as termination of power to an electrical component. The annunciating circuit includes a tuned amplifier for signal purification and amplification, a time delay integrator to prevent accidental circuit operation caused by noise and an annunciator and a communication interface activated responsive to a sonic signal received by the second transducer. The annunciating system is particularly adapted for use in electrical panel boxes having multiple electrical components that are coupled by post and bus bar type connects, to alleviate the use of flexible wiring in the box for annunciating circuits.
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A.C. Data Systems of Idaho, Inc.
Gaffin Jeffrey A.
Sherry Michael J.
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