Title:
LOAD DETECTION CIRCUIT
Document Type and Number:
Japanese Patent JP3684353
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a circuit capable of detecting the work amount of the load of a motor, etc., so that it does not become excessive, regardless of the change in output voltage with a simple circuit configuration.
SOLUTION: A load detection circuit comprising a detection means of an input voltage to a control circuit or a detection means of an output voltage from the control circuit, a conversion means for converting a load current into a voltage signal and a comparison circuit for comparing a value corresponding to the voltage detected by the detection means of the voltage with the voltage signal, wherein an excessive load is detected by using a value corresponding to the input voltage or output voltage as a threshold.
Inventors:
Hideya Nakamura
Application Number:
JP2002021174A
Publication Date:
August 17, 2005
Filing Date:
January 30, 2002
Export Citation:
Assignee:
Ekusen Co., Ltd.
International Classes:
G05F1/10; H02M7/48; (IPC1-7): G05F1/10; H02M7/48
Domestic Patent References:
| JP63080779A | ||||
| JP60084972A | ||||
| JP7007953A | ||||
| JP5219759A | ||||
| JP5122945A | ||||
| JP5076185A | ||||
| JP4021185U |
Attorney, Agent or Firm:
Tadao Mine