JPH03139129A - Charger for portable apparatus - Google Patents

Charger for portable apparatus

Info

Publication number
JPH03139129A
JPH03139129A JP27395189A JP27395189A JPH03139129A JP H03139129 A JPH03139129 A JP H03139129A JP 27395189 A JP27395189 A JP 27395189A JP 27395189 A JP27395189 A JP 27395189A JP H03139129 A JPH03139129 A JP H03139129A
Authority
JP
Japan
Prior art keywords
loss
power
power loss
power source
exceed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP27395189A
Other languages
Japanese (ja)
Inventor
Ken Haniyuda
Yoshifumi Toda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP27395189A priority Critical patent/JPH03139129A/en
Publication of JPH03139129A publication Critical patent/JPH03139129A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the size and weight of a charger by comparing detected power loss with preset reference power loss, and reducing the output current of a charging power source if the power loss of a stabilized power control element is increased larger than the reference loss.
CONSTITUTION: The loss of a power control element 3 of an apparatus driving power source 1 is increased in power loss during speaking from a base station, and particularly in the state of speaking with remote base station, the power loss might exceed the preset reference value. In this case, the output current of a charging power source 2 is reduced according to a control signal from a comparison controller 7 to control the power loss of the element 4, thereby so regulating the total power loss of the elements 3, 4 not to substantially vary from that at the time of normal state. Accordingly, the total loss does not exceed the reference set value, and it is not necessary to increase a heat sink fin or the thermal capacity of a power transistor.
COPYRIGHT: (C)1991,JPO&Japio
JP27395189A 1989-10-20 1989-10-20 Charger for portable apparatus Pending JPH03139129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27395189A JPH03139129A (en) 1989-10-20 1989-10-20 Charger for portable apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27395189A JPH03139129A (en) 1989-10-20 1989-10-20 Charger for portable apparatus

Publications (1)

Publication Number Publication Date
JPH03139129A true JPH03139129A (en) 1991-06-13

Family

ID=17534845

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27395189A Pending JPH03139129A (en) 1989-10-20 1989-10-20 Charger for portable apparatus

Country Status (1)

Country Link
JP (1) JPH03139129A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012227983A (en) * 2011-04-15 2012-11-15 Konica Minolta Medical & Graphic Inc Charging system, electronic device and charging device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012227983A (en) * 2011-04-15 2012-11-15 Konica Minolta Medical & Graphic Inc Charging system, electronic device and charging device

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