Title:
SUPPLY VOLTAGE CONTROL SYSTEM
Document Type and Number:
Japanese Patent JP3287904
Kind Code:
B2
Abstract:
PURPOSE: To obtain a small-sized reliable system by improving voltage precision of power for transmission to be supplied to an outdoor device and eliminating a voltage stabilizing circuit and a voltage conversion circuit within the outdoor device.
CONSTITUTION: An indoor device 10 prepares power for reception in a power source device 15a and supplies it to an outdoor device 20 via a cable 19a for reception and a supply power receiver 21. The outdoor device 20 drives controllers such as a microcomputer 24 and a modem 23, etc., by using this power for reception. The indoor device 10 prepares power for transmission in the power source device 15b, controls the power to set voltage in a voltage variable device 16 and supplies it to the outdoor device 20 via a cable 19 for transmission and a supply power receiver 25. This supply voltage is monitored by a voltage monitoring device 26 and voltage information is reported to the indoor device 10 from the microcomputer 24 via the modem 23 and the cable 19a for reception. The indoor device 10 decides transmission voltage from this report information and performs a voltage control so as to coincide with a control specification.
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Inventors:
Tomohiro Motegi
Hirofumi Higuchi
Norio Etchu
Tatsuo Togasaki
Hirofumi Higuchi
Norio Etchu
Tatsuo Togasaki
Application Number:
JP7585393A
Publication Date:
June 04, 2002
Filing Date:
April 01, 1993
Export Citation:
Assignee:
株式会社日立国際電気
株式会社日立製作所
株式会社日立製作所
International Classes:
H04B7/155; (IPC1-7): H04B7/155
Domestic Patent References:
| JP4326628A | ||||
| JP3145225A | ||||
| JP263326A | ||||
| JP62127138U | ||||
| JP62127139U |
Attorney, Agent or Firm:
Takehiko Suzue