POWER CONTROL SIGNAL DETECTOR

PURPOSE:To prevent a control section of a drive source from being malfunctioned due to an electromagnetic interference. CONSTITUTION:An output current I from a power control element 54 is led to a current path of a magneto-optical element 56, into which a linearly polarized light outputted from a lu...

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Bibliographische Detailangaben
Hauptverfasser:	FUKUNIWA KAZUSHI, SEO NOBUHIDE, KUROTAKI HIROKAZU, OKADA SEIJI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS BASIC ELECTRONIC CIRCUITRY CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROL OR REGULATION THEREOF CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS PULSE TECHNIQUE TESTING
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Beschreibung
Zusammenfassung:	PURPOSE:To prevent a control section of a drive source from being malfunctioned due to an electromagnetic interference. CONSTITUTION:An output current I from a power control element 54 is led to a current path of a magneto-optical element 56, into which a linearly polarized light outputted from a luminous source 55 is made in a direction orthogonal to the current I. When the magnetizing state of the magneto-optical element 56 is changed by the current I, the rotation angle of the polarized plane of the linearly polarized light to the magnetooptical element 56 is changed in response to the magnetizing state of the magneto-optical element 56 by the magneto-optical effect, and its rotary angle is converted into an optical signal representing the luminous intensity to control a current flowing to the power control element 54 by ON/OFF of a photo transistor(TR) 59.