HOLDING CIRCUIT, ELECTROMAGNETIC VALVE, VALVE SELECTOR, AND FLOW CONTROLLER

Relating to a solenoid used as a solenoid valve, a holding circuit and the like for suppressing the occurrence of back electromotive force, and preventing magnetic flux density from deterioration, without a major change of the conventional circuit constitution, is provided. A capacitor is connected...

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Bibliographic Details
Main Authors SAKAMOTO KAZUHIRA, KAWAGUCHI TOSHIKAZU, TERAMOTO YOUICHI
Format Patent
LanguageEnglish
Published 19.09.2013
Subjects
ACTUATING-FLOATS
BASIC ELECTRIC ELEMENTS
BLASTING
COCKS
DEVICES FOR VENTING OR AERATING
ELECTRICITY
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
INDUCTANCES
LIGHTING
MAGNETS
MECHANICAL ENGINEERING
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TAPS
THERMAL INSULATION IN GENERAL
TRANSFORMERS
VALVES
WEAPONS
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Summary:Relating to a solenoid used as a solenoid valve, a holding circuit and the like for suppressing the occurrence of back electromotive force, and preventing magnetic flux density from deterioration, without a major change of the conventional circuit constitution, is provided. A capacitor is connected in parallel with a resistance which is connected in series to a solenoid. The solenoid is driven at rated voltage by making a first switch and a second switch ON state and the solenoid is kept at holding voltage by making the first switch OFF state. The capacitor slows down the speed of change of applied voltage to the solenoid from the rated voltage to the holding voltage so that the back electromotive force of the solenoid is absorbed, which prevents the extinguishment of magnetic flux density.
Bibliography:Application Number: US201113885521