Title:
センサ付き軸受及び電源回路
Document Type and Number:
Japanese Patent JP6816632
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a bearing with a sensor that can suppress a possibility that the sensor operates not normally.SOLUTION: A bearing with a sensor comprises the sensor, an electric power generator, and a power circuit which outputs electric power generated by the electric power generator to the sensor. The power circuit comprises: a step-up circuit; a step-down circuit; a decoupling capacitor connected between a step-down voltage and a reference potential; a transistor having its source-drain path inserted into a low potential-side output line or high potential-side output line; and a step-up voltage threshold comparison part which outputs a signal for controlling the transistor into an ON state to the gate of the transistor when the step-up voltage is equal to or larger than the step-up voltage threshold, and also outputs a signal for controlling the transistor into an OFF state to the gate of the transistor when the step-up voltage is smaller than the step-up voltage threshold.SELECTED DRAWING: Figure 9
Inventors:
Toshihiko Okamura
Tomoyuki Yanagisawa
Hideki Kobayashi
Tomoyuki Yanagisawa
Hideki Kobayashi
Application Number:
JP2017090430A
Publication Date:
January 20, 2021
Filing Date:
April 28, 2017
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
F16C41/00; G05F1/67; H02M3/155
Domestic Patent References:
JP10042553A | ||||
JP10098872A | ||||
JP9149631A | ||||
JP2007249812A | ||||
JP2009240025A | ||||
JP2003269477A |
Attorney, Agent or Firm:
Sakai International Patent Office