ES347650A1 - Lamp Failure Warning Circuit - Google Patents
Lamp Failure Warning CircuitInfo
- Publication number
- ES347650A1 ES347650A1 ES347650A ES347650A ES347650A1 ES 347650 A1 ES347650 A1 ES 347650A1 ES 347650 A ES347650 A ES 347650A ES 347650 A ES347650 A ES 347650A ES 347650 A1 ES347650 A1 ES 347650A1
- Authority
- ES
- Spain
- Prior art keywords
- lamp
- transistor
- switch
- lights
- illuminate
- 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
- 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
-
- 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
- H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
- H05B39/10—Circuits providing for substitution of the light source in case of its failure
-
- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/20—Responsive to malfunctions or to light source life; for protection
- H05B47/21—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Audible And Visible Signals (AREA)
Abstract
A lamp failure warning circuit comprises a plurality of series circuits each including a resistor 13, 13a . . ., and a lamp 14, 14a . . ., e.g. the lamps on a road vehicle, the junction of the resistor and lamp in each circuit being connected to operate warning apparatus in the event of any one of the lamps failing. When a lamp fails, its respective diode 16, 16a . . . conducts to switch off transistor 17 and hence switch on transistor 22 and illuminate warning light 23. Further means may be provided, as shown, to indicate failure of the warning light: the currents provided to warning light 23 and further light 23a through 24, 25 and 24a, 25a are normally insufficient to illuminate the lights, but should one of these lights fail, the associated diode 27 or 27a conducts to switch off transistor 17 and switch on transistor 22 and thus illuminate whichever of lamps 23, 23a is still intact. The circuit of Fig. 3 (not shown) is modified to monitor the stop lights, in addition to the other lights, of the vehicle.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB51140/66A GB1195689A (en) | 1966-11-15 | 1966-11-15 | Lamp Failure Warning Circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES347650A1 true ES347650A1 (en) | 1969-02-16 |
Family
ID=10458801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES347650A Expired ES347650A1 (en) | 1966-11-15 | 1967-11-15 | Lamp Failure Warning Circuit |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS4421144B1 (en) |
| ES (1) | ES347650A1 (en) |
| GB (1) | GB1195689A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2129633A (en) * | 1982-09-28 | 1984-05-16 | Electronic Components Ltd | Lamp monitoring circuit |
| CN104290651B (en) * | 2014-09-29 | 2016-09-14 | 马瑞利汽车零部件(芜湖)有限公司 | A kind of steering indicating light failure detector circuit |
-
1966
- 1966-11-15 GB GB51140/66A patent/GB1195689A/en not_active Expired
- 1966-11-15 JP JP7331067A patent/JPS4421144B1/ja active Pending
-
1967
- 1967-11-15 ES ES347650A patent/ES347650A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4421144B1 (en) | 1969-09-10 |
| GB1195689A (en) | 1970-06-17 |
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