GB983858A - An improved electrical signalling circuit - Google Patents
An improved electrical signalling circuitInfo
- Publication number
- GB983858A GB983858A GB23383/61A GB2338361A GB983858A GB 983858 A GB983858 A GB 983858A GB 23383/61 A GB23383/61 A GB 23383/61A GB 2338361 A GB2338361 A GB 2338361A GB 983858 A GB983858 A GB 983858A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- relay
- switch
- energized
- standby
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/26—Rotor cores with slots for windings
- H02K1/265—Shape, form or location of the slots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/12—Visible signals
- B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
- B61L5/1809—Daylight signals
- B61L5/1881—Wiring diagrams for power supply, control or testing
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/16—Security signalling or alarm systems, e.g. redundant systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Audible And Visible Signals (AREA)
Abstract
983,858. Automatic alarms. SVENSKA A.B. GASACCUMULATOR. June 28, 1961 [July 11, 1960], No. 23383/61. Heading G4N. A lamp 7, Fig. 1, is lit on the failure of a lamp 3, by the de-energization of a relay 6, current flowing in the relay winding 6 as long as lamp 3 operates normally. The lamp 3, for example, that of a flashing beacon, is energized by A.C. or D.C. and is flashed by a periodically operated switch 4. The relay is energized via switch 4 and impedance 8, or over impedance 9 and lamp 3, in the closed and open positions of the switch 4, respectively. On failure of lamp 3, no current will flow in winding 6 in the open position of switch 4, the relay will be de-energized and its contact will put the standby lamp 7 into circuit with switch 4. In another embodiment (Fig.2,not shown) the impedances 8, 9 are replaced by oppositely poled rectifiers. In the embodiment of Fig. 3 the impedances are replaced by the primary windings of transformers 16, 17 and the relay winding 6 is series connected with their opposed secondaries. Several similar arrangements to that of Fig. 3 may be arranged in cascade, Fig. 4 (not shown) to connect a series of standby lamps into circuit successively as the preceding main or standby lamp fails.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE678560 | 1960-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB983858A true GB983858A (en) | 1965-02-17 |
Family
ID=20269605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23383/61A Expired GB983858A (en) | 1960-07-11 | 1961-06-28 | An improved electrical signalling circuit |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3197674A (en) |
| GB (1) | GB983858A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982001781A1 (en) * | 1980-11-14 | 1982-05-27 | John Nipper | Security alarm systems |
| GB2287309A (en) * | 1994-03-09 | 1995-09-13 | Forest City Signs Limited | Lighting unit |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3825769A (en) * | 1972-06-23 | 1974-07-23 | R Alford | Alternate light lighting fixture |
| US4222047A (en) * | 1978-11-06 | 1980-09-09 | Finnegan George E | Lamp failure detection apparatus |
| US5068570A (en) * | 1989-01-26 | 1991-11-26 | Koito Manufacturing Co., Ltd. | Lamp lighting circuit with an overload protection capability |
| JP2587710B2 (en) * | 1990-04-28 | 1997-03-05 | 株式会社小糸製作所 | Lighting circuit for vehicle discharge lamps |
| JP2678405B2 (en) * | 1991-02-13 | 1997-11-17 | 株式会社小糸製作所 | Lighting device for automobile discharge lamp |
| CN108390667B (en) * | 2018-04-30 | 2024-06-04 | 魏展生 | Indicating circuit for light-operated automatic switching on/off |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2197700A (en) * | 1937-02-04 | 1940-04-16 | Union Switch & Signal Co | Light signal for railways and the like |
-
1961
- 1961-06-23 US US119097A patent/US3197674A/en not_active Expired - Lifetime
- 1961-06-28 GB GB23383/61A patent/GB983858A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982001781A1 (en) * | 1980-11-14 | 1982-05-27 | John Nipper | Security alarm systems |
| GB2287309A (en) * | 1994-03-09 | 1995-09-13 | Forest City Signs Limited | Lighting unit |
| GB2287309B (en) * | 1994-03-09 | 1998-05-06 | Forest City Signs Limited | Lighting unit |
Also Published As
| Publication number | Publication date |
|---|---|
| US3197674A (en) | 1965-07-27 |
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