GB1512221A - Voltage monitoring device - Google Patents

Voltage monitoring device

Info

Publication number
GB1512221A
GB1512221A GB31972/75A GB3197275A GB1512221A GB 1512221 A GB1512221 A GB 1512221A GB 31972/75 A GB31972/75 A GB 31972/75A GB 3197275 A GB3197275 A GB 3197275A GB 1512221 A GB1512221 A GB 1512221A
Authority
GB
United Kingdom
Prior art keywords
volts
zener
transistor
lamp
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.)
Expired
Application number
GB31972/75A
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.)
INT DE MEC IND SOC
Original Assignee
INT DE MEC IND SOC
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
Priority claimed from FR7426549A external-priority patent/FR2280905A2/en
Application filed by INT DE MEC IND SOC filed Critical INT DE MEC IND SOC
Publication of GB1512221A publication Critical patent/GB1512221A/en
Expired 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
    • G01R19/16533—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
    • 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
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • H02H3/202—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage for dc systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00308—Overvoltage protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Tests Of Electric Status Of Batteries (AREA)

Abstract

1512221 Monitoring battery voltage SOC INTERNATIONALE DE MECANIQUE INDUSTRIELLE 31 July 1975 [31 July 1974] 31972/75 Heading G1U [Also in Division H3] A battery voltage monitor for a motor vehicle has an alarm indicator operative below 13À5 volts and above 16 volts for an increasing battery voltage (e.g. after switch on) but which remains off unless the battern voltage falls below 11À5 volts indicating discharge. At low voltage, none of Zener diodes 116, 115, 124 conducts thus transistor 126 is on, lamp 114 is illuminated and the setting point of the potentiometer 122, 123 is grounded. Thus above 13À5 volts, Zener 115 conducts turning 105 on and extinguishing the lamp 114. Above 16 volts Zener 116 conducts and the conditions are reversed. If the voltage falls below 13À5 volts, Zener 124 remains conducting since transistor 126 is off and thus transistor 105 is held on, keeping the lamp off, until the voltage falls below 11À5 volts. Diodes 121, 120, 125, 124 provide thermal drift compensation.
GB31972/75A 1974-07-31 1975-07-31 Voltage monitoring device Expired GB1512221A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7426549A FR2280905A2 (en) 1969-10-24 1974-07-31 Surveillance circuit for a voltage - uses load resistance in series with transistor controlled power transistor

Publications (1)

Publication Number Publication Date
GB1512221A true GB1512221A (en) 1978-05-24

Family

ID=9141923

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31972/75A Expired GB1512221A (en) 1974-07-31 1975-07-31 Voltage monitoring device

Country Status (9)

Country Link
AR (1) AR203800A1 (en)
BE (1) BE831859A (en)
BR (1) BR7504820A (en)
DE (1) DE2533577C3 (en)
ES (1) ES439656A1 (en)
GB (1) GB1512221A (en)
IT (1) IT1046905B (en)
LU (1) LU73091A1 (en)
NL (1) NL7509022A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931063A1 (en) * 1989-09-14 1991-03-28 Siemens Ag CIRCUIT ARRANGEMENT FOR MONITORING A POWER SUPPLY DEVICE FOR LOW VOLTAGE

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4225513A1 (en) * 1992-08-01 1994-02-03 Bayerische Motoren Werke Ag Switching control of vehicle battery charge monitoring lamps - involves already incorporated systems in comparison of battery voltage with overload threshold value increasing stepwise with temp.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931063A1 (en) * 1989-09-14 1991-03-28 Siemens Ag CIRCUIT ARRANGEMENT FOR MONITORING A POWER SUPPLY DEVICE FOR LOW VOLTAGE

Also Published As

Publication number Publication date
LU73091A1 (en) 1976-03-02
BE831859A (en) 1975-11-17
AR203800A1 (en) 1975-10-15
BR7504820A (en) 1976-07-13
DE2533577C3 (en) 1979-07-05
ES439656A1 (en) 1977-03-16
DE2533577A1 (en) 1976-02-12
IT1046905B (en) 1980-07-31
NL7509022A (en) 1976-02-03
DE2533577B2 (en) 1978-11-02

Similar Documents

Publication Publication Date Title
GB1459601A (en) Battery voltage monitor
GB853034A (en) Improvements in or relating to visual indicators
GB1485656A (en) Multiplexed instrumentation with priority logic
GB1513930A (en) Battery voltage detecting device
GB1465358A (en) Power source checking device
FR2297740A1 (en) WARNING DEVICE FOR THE STATE OF PRESSURE OF A VEHICLE'S TIRE
GB1512221A (en) Voltage monitoring device
GB1524373A (en) Electrical switch
ES8308079A1 (en) Operating, security and diagnostic device for the electrical system of a vehicle.
GB1524131A (en) Motor vehicle display instruments
GB958793A (en) Traffic density meter
GB1252904A (en)
GB1509589A (en) Switching circuit for a detonator or other load
US3936799A (en) Automotive vehicle rotary display and warning device
GB1397706A (en) Indicating devices for indicating the working states of parts of a machine
ES8500546A1 (en) Lamp monitoring circuits.
JPS5351772A (en) Watch with battery life warning indicator
JPS56131440A (en) Indicator for vehicle
GB1070468A (en) Improvements in or relating to alarm annunciators
JPS5216199A (en) Liquid crystal indicator with illuminator
JPS55101811A (en) Measuring indicator for automobile
JPS5229198A (en) Gas leakage alarm unit
GB1058367A (en) Improvements in or relating to levelling staffs
JPS51114165A (en) Device for a clock with an alarm indicator for the life of a battery
JPS5351773A (en) Watch with battery life warning indicator

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee