Title:
DC VOLTAGE CONTROLLER FOR REFRIGERATOR
Document Type and Number:
Japanese Patent JP3318173
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent the input of voltage higher than needed by detecting the voltage fluctuation of power to be supplied to a DC load and regulating the secondary side output voltage of transformer based on this detected fluctuation.
SOLUTION: A primary side voltage V0 detection circuit 11 is provided on the primary side of transformer 2, and the fluctuation of DC voltage is detected by inputting a detecting signal to a microcomputer 6. When fluctuating such as lowering the voltage to the DC load, for example, the microcomputer 6 performs control so that the voltage on a secondary side 22 of transformer 2 can become V1 before the electrification of AC load or the other DC load. Afterwards, in the state of turning the secondary side voltage of transformer 2 to V2 based on the output of fluctuation detecting means for detecting the fluctuation of DC load voltage, the microcomputer 6 performs regulation for switching the voltage to V2. Thus, the constant voltage can be supplied to the DC load.
Inventors:
Yoshiyuki Ogura
Satoru Hasegawa
Junji Miyagami
Satoru Hasegawa
Junji Miyagami
Application Number:
JP29854695A
Publication Date:
August 26, 2002
Filing Date:
November 16, 1995
Export Citation:
Assignee:
Sharp Corporation
International Classes:
F25D11/00; G05F1/20; H02J1/00; (IPC1-7): G05F1/20; F25D11/00; H02J1/00
Domestic Patent References:
| JP7298673A | ||||
| JP7139863A | ||||
| JP6288388A | ||||
| JP63318463A | ||||
| JP7250481A |
Attorney, Agent or Firm:
Eisuke Fujimoto