Title:
SECONDARY BATTERY CHARGING SYSTEM FOR RADIO TRANSMITTER-RECEIVER
Document Type and Number:
Japanese Patent JPH09284167
Kind Code:
A
Abstract:
To provide the charging system for a secondary battery whose cost is reduced by making the size of an external power supply time division multiple access(TDMA) system transmitter-receiver small.
A switch 9 is provided to a charging current path of a secondary battery 6 in which a current from an external power supply 8 is branched. The switch 9 is on/off-controlled with a control signal from a control section 3 to control the operation of a radio section 2 corresponding to a transmission/ reception slot of the TDMA so as to open the switch 9 for the transmission slot and to close the switch 9 for other periods thereby stopping charging at a transmission state requiring a large current consumption.
Inventors:
KISHINE TOSHIYUKI
Application Number:
JP11117396A
Publication Date:
October 31, 1997
Filing Date:
April 09, 1996
Export Citation:
Assignee:
KOKUSAI ELECTRIC CO LTD
International Classes:
H02J7/00; H04B1/04; H04B1/16; H04B1/3822; H04B1/40; (IPC1-7): H04B1/40; H02J7/00; H04B1/04; H04B1/16
Attorney, Agent or Firm:
大塚 学