CURRENT DETECTOR

PROBLEM TO BE SOLVED: To obtain a current detector which makes it possible to accurately control with a small size by providing a Hall element, a differential amplifier, a full-wave rectifier, a smoothing unit, and a non-inverting amplifier. SOLUTION: A motor 1 and a power source 2 are connected the...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUMOTO SUEO, URA AKIHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	AMPLIFIERS BASIC ELECTRONIC CIRCUITRY CONTROLLING ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS REGULATING SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain a current detector which makes it possible to accurately control with a small size by providing a Hall element, a differential amplifier, a full-wave rectifier, a smoothing unit, and a non-inverting amplifier. SOLUTION: A motor 1 and a power source 2 are connected therebetween with a power control element 3, and further a coil 4 is provided so that the resistance value of the element 5 is varied by the magnetic flux. A differential amplifier 6 is connected to the output of the element 5, a full-wave rectifier 7 is connected to its output, a smoothing capacitor 8 is connected to its output, a non-inverting amplifier 9 is connected to the output of the capacitor 8, and further an output terminal 10 is connected to its output. A resistor 13 and a constant-voltage element 14 are connected between the terminal 11 and an earth terminal 12. That is, a constant current flows to the element 5 through the amplifier 15. With the configuration, the resistance value of the element 5 is changed by the current flowing to the coil 4, i.e., the current flowing to the motor 1.