GB1521310A - Test circuit arranged to test one or more pairs of incandescent lamps working in parallel for example in motor vehicle lighting installations - Google Patents
Test circuit arranged to test one or more pairs of incandescent lamps working in parallel for example in motor vehicle lighting installationsInfo
- Publication number
- GB1521310A GB1521310A GB5107175A GB5107175A GB1521310A GB 1521310 A GB1521310 A GB 1521310A GB 5107175 A GB5107175 A GB 5107175A GB 5107175 A GB5107175 A GB 5107175A GB 1521310 A GB1521310 A GB 1521310A
- Authority
- GB
- United Kingdom
- Prior art keywords
- test
- switch
- parallel
- pairs
- motor vehicle
- 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
-
- 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
-
- 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)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
1521310 Lamp testing circuit BAYERISCHE MOTOREN WERKE AG 12 Dec 1975 [14 Dec 1974] 51071/75 Heading G1U A pair of lamps 1, 2, Fig. 1, for example in a car, normally energized in parallel from a supply 16 under the control of a switch 11 (a switch 10 being normally closed), are tested when they are otherwise not in use by opening the switch 10 and applying power to the lamps from a supply 16a via a test switch 15. If either lamp is open circuit the base of a transistor 13 is raised sufficiently so that the transistor 13 conducts and a warning lamp 17 is lit. A second pair of lamps 18, 19 may be associated with the same warning lamp 17 via a second transistor 24, and many such double pairs may be associated with the same test switch 15, as shown. In a modification, Fig. 2 (not shown), switches 10 and 11 are controlled by a single relay so arranged that when the test switch 15 is closed the relay is made to drop out.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742459268 DE2459268C3 (en) | 1974-12-14 | Test circuit for at least one pair of incandescent lamps connected in parallel, in particular for vehicle lighting |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1521310A true GB1521310A (en) | 1978-08-16 |
Family
ID=5933456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5107175A Expired GB1521310A (en) | 1974-12-14 | 1975-12-12 | Test circuit arranged to test one or more pairs of incandescent lamps working in parallel for example in motor vehicle lighting installations |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR2294608A1 (en) |
GB (1) | GB1521310A (en) |
IT (1) | IT1049957B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2441515A2 (en) * | 1975-11-11 | 1980-06-13 | Bayerische Motoren Werke Ag | Test system for motor vehicle circuit operations - has monitoring switches in parallel with test switch in series with indicating lamp, typically LED |
-
1975
- 1975-12-05 IT IT3000575A patent/IT1049957B/en active
- 1975-12-12 FR FR7538175A patent/FR2294608A1/en active Granted
- 1975-12-12 GB GB5107175A patent/GB1521310A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2441515A2 (en) * | 1975-11-11 | 1980-06-13 | Bayerische Motoren Werke Ag | Test system for motor vehicle circuit operations - has monitoring switches in parallel with test switch in series with indicating lamp, typically LED |
Also Published As
Publication number | Publication date |
---|---|
DE2459268A1 (en) | 1976-11-04 |
FR2294608A1 (en) | 1976-07-09 |
FR2294608B3 (en) | 1979-10-05 |
DE2459268B2 (en) | 1977-06-02 |
IT1049957B (en) | 1981-02-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |