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GB1370089A - Electrical testing devices - Google Patents

Electrical testing devices

Info

Publication number
GB1370089A
GB1370089A GB6097970A GB6097970A GB1370089A GB 1370089 A GB1370089 A GB 1370089A GB 6097970 A GB6097970 A GB 6097970A GB 6097970 A GB6097970 A GB 6097970A GB 1370089 A GB1370089 A GB 1370089A
Authority
GB
United Kingdom
Prior art keywords
lamp
battery
voltage
circuit
dec
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
GB6097970A
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.)
Electric Power Storage Ltd
Original Assignee
Electric Power Storage 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 Electric Power Storage Ltd filed Critical Electric Power Storage Ltd
Priority to GB6097970A priority Critical patent/GB1370089A/en
Priority to DE19712163366 priority patent/DE2163366C3/en
Publication of GB1370089A publication Critical patent/GB1370089A/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
    • 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

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Tests Of Electric Status Of Batteries (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Secondary Cells (AREA)

Abstract

1370089 Testing battery voltage ELECTRIC POWER STORAGE Ltd 20 Dec 1971 [22 Dec 1970] 60979/70 Heading G1U If the voltage at the terminals 14, 15 of a battery is low a small current will flow through a green lamp 17, the current being too small to illuminate the lamp but sufficient to render a transistor 11 conductive so that a red lamp 10 is illuminated, but if the battery voltage is sufficiently high a voltage threshold circuit 27 - which may be simply a Zener diodefires a thyristor 18 causing the green lamp to be fully illuminated and the red lamp to be extinguished. An input diode 16, provided to protect the circuit against incorrectly connected batteries, may be replaced by a full-wave bridge so that the circuit will operate correctly however the battery is connected.
GB6097970A 1970-12-22 1970-12-22 Electrical testing devices Expired GB1370089A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB6097970A GB1370089A (en) 1970-12-22 1970-12-22 Electrical testing devices
DE19712163366 DE2163366C3 (en) 1970-12-22 1971-12-21 Test device for accumulators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6097970A GB1370089A (en) 1970-12-22 1970-12-22 Electrical testing devices

Publications (1)

Publication Number Publication Date
GB1370089A true GB1370089A (en) 1974-10-09

Family

ID=10486403

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6097970A Expired GB1370089A (en) 1970-12-22 1970-12-22 Electrical testing devices

Country Status (2)

Country Link
DE (1) DE2163366C3 (en)
GB (1) GB1370089A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147969A (en) * 1977-10-03 1979-04-03 Med General, Inc. Battery pack charger and tester

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147969A (en) * 1977-10-03 1979-04-03 Med General, Inc. Battery pack charger and tester

Also Published As

Publication number Publication date
DE2163366B2 (en) 1973-07-26
DE2163366C3 (en) 1974-03-14
DE2163366A1 (en) 1972-06-29

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees