JPS5638621A - Control system for electric power supply - Google Patents

Control system for electric power supply

Info

Publication number
JPS5638621A
JPS5638621A JP11447479A JP11447479A JPS5638621A JP S5638621 A JPS5638621 A JP S5638621A JP 11447479 A JP11447479 A JP 11447479A JP 11447479 A JP11447479 A JP 11447479A JP S5638621 A JPS5638621 A JP S5638621A
Authority
JP
Japan
Prior art keywords
power supply
power
switch
case
cell
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.)
Granted
Application number
JP11447479A
Other languages
Japanese (ja)
Other versions
JPS5837573B2 (en
Inventor
Teruo Sato
Kazuyuki Nakano
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP54114474A priority Critical patent/JPS5837573B2/en
Publication of JPS5638621A publication Critical patent/JPS5638621A/en
Publication of JPS5837573B2 publication Critical patent/JPS5837573B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Power Sources (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

PURPOSE: To prevent the leaked liquid and explosion of the primary cell, by providing the switch which turns on in case of the secondary cell and turns off in case of the primary cell, with the electric power supply for the equipment driven with the two power supplies; external and internal power supplies (the primary and secondary cells).
CONSTITUTION: In the equipment in which the power is supplied through the selection of the switch 2 by either one of the external power supply 1 or the internal cell power supply 11, the power is supplied through the selection of the load into the one less comparatively in the power consumption (power supply regulator 4, C-MOS LSI5, and liquid level display unit 6 etc.) and the other comparatively much in the power consumption (printer 8). In this case, for the load comparatively less in the power consumption power is supplied from the external power supply 1 via the switch 19 which turns off under the presence of the internal cell 11, that is, the secondary cell. In this case, to increase the current flowing to the switch 19 over a specified value, the dummy load 20 is provided for the external power supply 1.
COPYRIGHT: (C)1981,JPO&Japio
JP54114474A 1979-09-05 1979-09-05 Power control method Expired JPS5837573B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54114474A JPS5837573B2 (en) 1979-09-05 1979-09-05 Power control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54114474A JPS5837573B2 (en) 1979-09-05 1979-09-05 Power control method

Publications (2)

Publication Number Publication Date
JPS5638621A true JPS5638621A (en) 1981-04-13
JPS5837573B2 JPS5837573B2 (en) 1983-08-17

Family

ID=14638634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54114474A Expired JPS5837573B2 (en) 1979-09-05 1979-09-05 Power control method

Country Status (1)

Country Link
JP (1) JPS5837573B2 (en)

Also Published As

Publication number Publication date
JPS5837573B2 (en) 1983-08-17

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