JPS57169680A - Alarming device for battery voltage drop - Google Patents

Alarming device for battery voltage drop

Info

Publication number
JPS57169680A
JPS57169680A JP56054404A JP5440481A JPS57169680A JP S57169680 A JPS57169680 A JP S57169680A JP 56054404 A JP56054404 A JP 56054404A JP 5440481 A JP5440481 A JP 5440481A JP S57169680 A JPS57169680 A JP S57169680A
Authority
JP
Japan
Prior art keywords
comparator
battery
voltage
capacitor
battery 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
JP56054404A
Other languages
Japanese (ja)
Inventor
Shigeaki Kutonai
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Fuji Electric Manufacturing Co 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 Fuji Electric Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP56054404A priority Critical patent/JPS57169680A/en
Publication of JPS57169680A publication Critical patent/JPS57169680A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16504—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed
    • G01R19/16519—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed using FET's
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
    • G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
    • G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Tests Of Electric Status Of Batteries (AREA)

Abstract

PURPOSE:To generate an alarm signal which appeals easily to man's sensation with low electric power consumption by flickering a pilot lamp at the repetitive periods of charging and discharging of a capacitor which is charged by the electric current flowing therein from a battery. CONSTITUTION:When a switch 2 connecting in series to a battery 1 is turned on, electric power is supplied to load 15, and the electric current corresponding to a battery voltage EB is flowed through a resistace 3 and a diode 4 into a capacitor 5. When the output voltage V1 of an error amplifier 9 drops below the noninverted input terminal voltage Vr', a comparator 10 inverts and a switching element 11 conducts, then the electric charge of the capacitor 5 discharges. Thereafter, when the output voltage V1 of the amplifier 9 rises higher than the non- inverted input terminal voltage Vr'+DELTAVr' of the comparator 10, the comparator 10 inverts again. Thereafter, this operation is reiterated, and a lamp 14 connected to the output terminal of the comparator 10 flickers at the frequency corresponding to the battery voltage.
JP56054404A 1981-04-13 1981-04-13 Alarming device for battery voltage drop Pending JPS57169680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56054404A JPS57169680A (en) 1981-04-13 1981-04-13 Alarming device for battery voltage drop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56054404A JPS57169680A (en) 1981-04-13 1981-04-13 Alarming device for battery voltage drop

Publications (1)

Publication Number Publication Date
JPS57169680A true JPS57169680A (en) 1982-10-19

Family

ID=12969751

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56054404A Pending JPS57169680A (en) 1981-04-13 1981-04-13 Alarming device for battery voltage drop

Country Status (1)

Country Link
JP (1) JPS57169680A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6088281U (en) * 1983-11-24 1985-06-17 デイエツクスアンテナ株式会社 Voltage drop detection device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6088281U (en) * 1983-11-24 1985-06-17 デイエツクスアンテナ株式会社 Voltage drop detection device
JPH0526539Y2 (en) * 1983-11-24 1993-07-05

Similar Documents

Publication Publication Date Title
GB1437025A (en) Method and device for determining the state of charge of galvanic energy sources
JPS6447276A (en) Electric source circuit
GB1357409A (en) Battery charging circuit
CS65390A3 (en) Device for storage battery charging
JPS57169680A (en) Alarming device for battery voltage drop
GB1347818A (en) Storage battery charging device
JPS5644868A (en) Residual amount indicating device of battery
GB1163377A (en) Control of Battery Charging
EP0047183A1 (en) A dry cell battery re-activator
JPS6485539A (en) Back-up power circuit
CN220797858U (en) Battery charging connection control circuit and charger
GB1157129A (en) Battery Charging System
JPS6439235A (en) Battery charging equipment
JP3219498B2 (en) Rechargeable battery charging circuit
SU677036A1 (en) Load power supplying device
ES8304717A1 (en) Battery charging system
SU997179A1 (en) Device for mantaining continuity of dc supply
SU1686605A1 (en) Discharging-and-charging set
SU790140A1 (en) Device for charging reservoir capacitor
JPS5732427A (en) Camera circuit
JPS5612860A (en) Chopper circuit
JPS56137406A (en) Extension system of switch function
SU871261A1 (en) Device for protecting power source with genegator and rechargeable battery
JPS57187724A (en) Controller for copying machine
JPS59109875A (en) Recognizing device of residual of battery capacity