GB1213386A - Battery condition indicator - Google Patents
Battery condition indicatorInfo
- Publication number
- GB1213386A GB1213386A GB37960/68A GB3796068A GB1213386A GB 1213386 A GB1213386 A GB 1213386A GB 37960/68 A GB37960/68 A GB 37960/68A GB 3796068 A GB3796068 A GB 3796068A GB 1213386 A GB1213386 A GB 1213386A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- battery
- capacitor
- lamp
- charge
- 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
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
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/04—Voltage dividers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
- G01R31/3646—Constructional arrangements for indicating electrical conditions or variables, e.g. visual or audible indicators
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
Abstract
1,213,386. Testing batteries. WARWICK ELECTRONICS Inc. Aug. 8, 1968 [Aug. 8, 1967 (2)], No. 37960/68. Heading G1U. A battery condition indicator comprises a lightemitting device, e.g. neon 20, which, provided the battery voltage is above a certain minimum, flickers at a rate dependant on the battery voltage. In Fig. 1 an oscillator 12 is energized by the battery 10 and thus supplies oscillations whose magnitude is proportional to the battery voltage. These oscillations are stepped-up by transformer 23, rectified by diode 13 and used to charge a capacitor 17 through resistors 15, 16. When the capacitor voltage reaches the ignition voltage of neon lamp 20 the latter momentarily lights and discharges the capacitor, which starts to charge again, repeating the cycle. The lamp thus flickers at a rate dependant on the time taken to charge the capacitor, which in turn is dependant on the battery voltage. By adjusting resistor 15 the lamp is made to appear, to the human eye, continuously energized when the battery is fresh. As the voltage drops the flicker becomes more noticeable, the rate of the flicker decreasing until the voltage is so low that the lamp cannot light at all.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US68374167A | 1967-08-08 | 1967-08-08 | |
US65921967A | 1967-08-08 | 1967-08-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1213386A true GB1213386A (en) | 1970-11-25 |
Family
ID=27097776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB37960/68A Expired GB1213386A (en) | 1967-08-08 | 1968-08-08 | Battery condition indicator |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE1763784A1 (en) |
FR (1) | FR1578364A (en) |
GB (1) | GB1213386A (en) |
NL (1) | NL6811147A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4225514A1 (en) * | 1992-08-01 | 1994-02-03 | Bayerische Motoren Werke Ag | Indication method for state of battery charge in stored motor vehicles - is based on encoded flashes of radio theft-warning LED driven by comparator of battery voltage with full-charge and partial-charge thresholds |
DE10122767A1 (en) * | 2001-05-10 | 2002-11-14 | Volkswagen Ag | On-board electrical system stabilization and battery diagnosis arrangement for motor vehicle has capacitor connected in parallel with battery or batteries, device for measuring capacitor current |
-
1968
- 1968-08-06 NL NL6811147A patent/NL6811147A/xx unknown
- 1968-08-08 FR FR1578364D patent/FR1578364A/fr not_active Expired
- 1968-08-08 GB GB37960/68A patent/GB1213386A/en not_active Expired
- 1968-08-08 DE DE19681763784 patent/DE1763784A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
NL6811147A (en) | 1969-02-11 |
FR1578364A (en) | 1969-08-14 |
DE1763784A1 (en) | 1972-01-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |