Electricity: electrical systems and devices – Safety and protection of systems and devices – Voltage regulator protective circuits
Patent
1996-04-26
1997-02-04
Gaffin, Jeffrey A.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Voltage regulator protective circuits
84 22, H02H 700
Patent
active
056005210
ABSTRACT:
An automatic performing apparatus that executes recording and reproduction of a performance includes a diagnostic signal generator for sending a power supply control circuit at least one of normal and abnormal diagnostic signals indicating whether a controller is normally executing a program. The power supply control circuit controls the power supplied to a drive circuit by interrupting the power or reducing the power to such a low level that the drive circuit is not damaged by a prolonged power supply if the operation of the controller is determined abnormal based on the diagnostic signal generated by the diagnostic signal generator.
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Gaffin Jeffrey A.
Kabushiki Kaisha Kawai Gakki Seisakusho
Medley Sally C.
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