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Title:
CONFIRMING METHOD OF ATTRACTIVE CONDITION IN ELECTROMAGNETIC EQUIPMENT
Document Type and Number:
Japanese Patent JPH10332030
Kind Code:
A
Abstract:

To provide an inspecting method of an electromagnetic equipment of high general usability, whereby an attractive condition of an attractive member of the electromagnetic equipment of a solenoid valve or the like to an electromagnet can be easily surely inspected for multifarious electromagnetic equipment, and confirmation thereof can be continuously performed during carrying of a current in a coil of the electromagnet.

In this confirming method of an attractive condition in an electromagnetic equipment, in a coil 4 of an electromagnet in the electromagnetic equipment, from a constant current carrying circuit 9, while carrying a current formed by synthesizing a DC constant current and a fine square wave current (AC current), an AC component of applied voltage to the coil 4 is extracted by a capacitor 10, by comparing a level thereof with a prescribed reference level in a comparator 13, an attractive condition (whether attracted or not) to the electromagnet of attracting member of the electromagnetic equipment is confirmed.


Inventors:
TAKAHASHI SADAMU
IRITANI NOBUHIRO
Application Number:
JP13670397A
Publication Date:
December 15, 1998
Filing Date:
May 27, 1997
Export Citation:
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Assignee:
RINNAI KK
NIPPON DENSHI DEVICE KK
International Classes:
F16K31/06; (IPC1-7): F16K31/06
Attorney, Agent or Firm:
Tatsuhiko Sato (1 outside)



 
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