GB1402253A - Lamp failure warning circuits - Google Patents

Lamp failure warning circuits

Info

Publication number
GB1402253A
GB1402253A GB4337871A GB4337871A GB1402253A GB 1402253 A GB1402253 A GB 1402253A GB 4337871 A GB4337871 A GB 4337871A GB 4337871 A GB4337871 A GB 4337871A GB 1402253 A GB1402253 A GB 1402253A
Authority
GB
United Kingdom
Prior art keywords
lamp
transistor
failure
energized
resistor
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
GB4337871A
Other languages
English (en)
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.)
Lucas Electrical Co Ltd
Original Assignee
Lucas Electrical 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 Lucas Electrical Co Ltd filed Critical Lucas Electrical Co Ltd
Priority to GB4337871A priority Critical patent/GB1402253A/en
Priority to FR7232912A priority patent/FR2153069B1/fr
Publication of GB1402253A publication Critical patent/GB1402253A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q11/00—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00
    • B60Q11/005—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00 for lighting devices, e.g. indicating if lamps are burning or not

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
GB4337871A 1971-09-17 1971-09-17 Lamp failure warning circuits Expired GB1402253A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4337871A GB1402253A (en) 1971-09-17 1971-09-17 Lamp failure warning circuits
FR7232912A FR2153069B1 (cg-RX-API-DMAC10.html) 1971-09-17 1972-09-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4337871A GB1402253A (en) 1971-09-17 1971-09-17 Lamp failure warning circuits

Publications (1)

Publication Number Publication Date
GB1402253A true GB1402253A (en) 1975-08-06

Family

ID=10428507

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4337871A Expired GB1402253A (en) 1971-09-17 1971-09-17 Lamp failure warning circuits

Country Status (2)

Country Link
FR (1) FR2153069B1 (cg-RX-API-DMAC10.html)
GB (1) GB1402253A (cg-RX-API-DMAC10.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129633A (en) * 1982-09-28 1984-05-16 Electronic Components Ltd Lamp monitoring circuit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452229A1 (fr) * 1979-03-19 1980-10-17 Jaeger Detecteur de defaut de feux de stop de vehicules
US4593233A (en) * 1981-07-24 1986-06-03 Lucas Industries Public Limited Company Lamp drive circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129633A (en) * 1982-09-28 1984-05-16 Electronic Components Ltd Lamp monitoring circuit

Also Published As

Publication number Publication date
FR2153069A1 (cg-RX-API-DMAC10.html) 1973-04-27
FR2153069B1 (cg-RX-API-DMAC10.html) 1975-03-14

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Legal Events

Date Code Title Description
49R Reference inserted (sect. 9/1949)
PS Patent sealed
PE20 Patent expired after termination of 20 years