Title:
直流電動機の制御装置
Document Type and Number:
Japanese Patent JP4131588
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide control equipment, capable of reducing capacity and saving energy of a switching element constituting a drive means at the driving of a DC motor. SOLUTION: Control equipment is constituted of DC fan motors 7, 8 and a plurality of switching elements, and is provided with drive circuits 9, 10 which drive the DC fan motors, switching power source 3 which outputs and applies a DC voltage to the drive circuits, and a control circuit 4 for controlling the operation of the DC fan motors. At starting of DC fan motors 7, 8, the control circuit 4 keeps an output voltage of the switching power source 3 which is applied to the driving circuits 9, 10 low and thereafter increases the voltage.
Inventors:
Maekawa Katsumi
Application Number:
JP21410498A
Publication Date:
August 13, 2008
Filing Date:
July 29, 1998
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
F04D27/00; H02P7/06; F25D17/06; H02P1/46; H02P6/06; H02P6/08; H02P6/28
Domestic Patent References:
| JP59185186A | ||||
| JP2254998A | ||||
| JP58218881A |
Attorney, Agent or Firm:
Kei Amekasa