JPS5752930A - Alarm display system for power supply voltage drop - Google Patents

Alarm display system for power supply voltage drop

Info

Publication number
JPS5752930A
JPS5752930A JP55126581A JP12658180A JPS5752930A JP S5752930 A JPS5752930 A JP S5752930A JP 55126581 A JP55126581 A JP 55126581A JP 12658180 A JP12658180 A JP 12658180A JP S5752930 A JPS5752930 A JP S5752930A
Authority
JP
Japan
Prior art keywords
power supply
voltage drop
circuit
frequency
voltage
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
JP55126581A
Other languages
Japanese (ja)
Inventor
Yoshinori Sato
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 General Electronics Ltd
Original Assignee
General Denshi Kogyo KK
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 General Denshi Kogyo KK filed Critical General Denshi Kogyo KK
Priority to JP55126581A priority Critical patent/JPS5752930A/en
Publication of JPS5752930A publication Critical patent/JPS5752930A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Sources (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

PURPOSE:To enable the common use with a display means, by displaying the voltage drop of cells through flickering of frequency display. CONSTITUTION:It is detected that a terminal voltage of a memory backup power supply is a specified voltage or less, so that the display means such as frequency can be flickered with this detection signal. For example, to a power supply 1, a voltage drop detection circuit 2, Schmitt trigger circuit 3, and astable multivibrator 4 are connected in series, and a pulse signal is outputted if the voltage drops. On the other hand, the power supply 1 is connected to a control and storage circuit 6 via a diode 5. The pulse signal and the control signal are applied to a frequency indicator 10 via a buffer circuit 8 with a segment recorder 7. Further, a scanning signal is applied from the storage circuit 6 via a buffer circuit 9. Thus, the frequency indicator 10 cause flickering.
JP55126581A 1980-09-11 1980-09-11 Alarm display system for power supply voltage drop Pending JPS5752930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55126581A JPS5752930A (en) 1980-09-11 1980-09-11 Alarm display system for power supply voltage drop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55126581A JPS5752930A (en) 1980-09-11 1980-09-11 Alarm display system for power supply voltage drop

Publications (1)

Publication Number Publication Date
JPS5752930A true JPS5752930A (en) 1982-03-29

Family

ID=14938708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55126581A Pending JPS5752930A (en) 1980-09-11 1980-09-11 Alarm display system for power supply voltage drop

Country Status (1)

Country Link
JP (1) JPS5752930A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61269718A (en) * 1985-05-24 1986-11-29 Canon Inc Battery-driven electronic appliance
CN104459288A (en) * 2014-12-05 2015-03-25 中国电信股份有限公司南通分公司 Telecommunication terminal power supply low-voltage alarm

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61269718A (en) * 1985-05-24 1986-11-29 Canon Inc Battery-driven electronic appliance
CN104459288A (en) * 2014-12-05 2015-03-25 中国电信股份有限公司南通分公司 Telecommunication terminal power supply low-voltage alarm

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