GB1294698A - Circuit for monitoring faults in a signal lamp circuit - Google Patents
Circuit for monitoring faults in a signal lamp circuitInfo
- Publication number
- GB1294698A GB1294698A GB55996/69A GB5599669A GB1294698A GB 1294698 A GB1294698 A GB 1294698A GB 55996/69 A GB55996/69 A GB 55996/69A GB 5599669 A GB5599669 A GB 5599669A GB 1294698 A GB1294698 A GB 1294698A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- lamp
- circuit
- fault
- turn
- 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
- 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
-
- 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
- H05B47/22—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel with communication between the lamps and a central unit
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Control Of Stepping Motors (AREA)
Abstract
1294698 Lamp failure alarms HASLER AG 14 Nov 1969 [25 Nov 1968 7 May 1969] 55996/69 Heading G4N In a circuit for monitoring faults in a signal lamp control circuit having a transistor 5, controlled by a signal voltage E, a pulse transmitter 20 is arranged to deliver test pulses to transistor 5 and to a fault indicator circuit 22-26 which provides an indication if a voltage which does not correspond to the switched state of transistor 5, determined by the test pulse, occurs at the junction of transistor 5 and lamp 1. As shown, a signal at E may be passed by gates 3, 4 to turn on transistor 5 and operate lamp 1. Each test pulse A inhibits gate 3 so as to turn off transistor 5 and hence provide a pulse at the collector which is fed to a fault indicating circuit 23 . . . 26 which lights lamp 26 if lamp 1 is faulty or if transistor 5 fails to turn off. Pulses B are used in conjunction with a fault indicating circuit 33 ... 36 to light lamp 36 if an open-circuit fault should occur in gate 4 or transistor 5. AND gates 7, 8; 17, 18 couple a further lamp 11 (controlled by transistor 15) to the fault indicators. Lamp 39 indicates a fault of either type in circuits 2 and 12. The mark/space ratio of pulses A may be sufficiently small as to have no effect on the brightness of lamps 1, 11 or may be varied to provide a brightness control.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1749268A CH491452A (en) | 1968-11-25 | 1968-11-25 | Circuit for monitoring the operational readiness of at least one DC-fed signal lamp and the transistor controlling it |
CH690069A CH501285A (en) | 1968-11-25 | 1969-05-07 | Circuit for monitoring the operational readiness of at least one DC-fed signal lamp and the transistor controlling it |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1294698A true GB1294698A (en) | 1972-11-01 |
Family
ID=25700359
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB55996/69A Expired GB1294698A (en) | 1968-11-25 | 1969-11-14 | Circuit for monitoring faults in a signal lamp circuit |
Country Status (12)
Country | Link |
---|---|
JP (1) | JPS4844076B1 (en) |
BE (1) | BE741924A (en) |
CH (1) | CH501285A (en) |
CS (1) | CS178063B2 (en) |
DE (1) | DE1956560B2 (en) |
FR (1) | FR2024204A1 (en) |
GB (1) | GB1294698A (en) |
NL (1) | NL6917673A (en) |
PL (1) | PL72701B1 (en) |
RO (1) | RO58917A (en) |
SE (1) | SE344839B (en) |
YU (1) | YU32418B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112816804A (en) * | 2019-11-15 | 2021-05-18 | 中车株洲电力机车研究所有限公司 | High-integration pulse testing device |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3211251C2 (en) * | 1982-03-26 | 1985-09-26 | Steinbock Gmbh, 8052 Moosburg | Circuit arrangement for monitoring the degree of wear of commutator carbon brushes |
EP0264449B1 (en) * | 1986-04-24 | 1991-07-17 | Nauchno-Issledovatelsky I Experimentalny Institut Avtomobilnogo Elektroborudovania I Avtopriborov | Apparatus for measuring temporal parameters of light signalling devices |
JPS6376336U (en) * | 1986-11-04 | 1988-05-20 | ||
FR2675266B1 (en) * | 1991-04-10 | 1995-09-01 | Cheylus Jacques | FUNCTION DETECTOR WITH COUNTER. |
-
1969
- 1969-05-07 CH CH690069A patent/CH501285A/en not_active IP Right Cessation
- 1969-11-11 DE DE19691956560 patent/DE1956560B2/en not_active Withdrawn
- 1969-11-14 GB GB55996/69A patent/GB1294698A/en not_active Expired
- 1969-11-19 BE BE741924D patent/BE741924A/xx unknown
- 1969-11-21 CS CS7679A patent/CS178063B2/cs unknown
- 1969-11-21 PL PL1969137045A patent/PL72701B1/pl unknown
- 1969-11-24 YU YU2937/69A patent/YU32418B/en unknown
- 1969-11-24 JP JP44093684A patent/JPS4844076B1/ja active Pending
- 1969-11-24 SE SE16118/69A patent/SE344839B/xx unknown
- 1969-11-24 NL NL6917673A patent/NL6917673A/xx not_active Application Discontinuation
- 1969-11-25 RO RO61666A patent/RO58917A/ro unknown
- 1969-11-25 FR FR6940605A patent/FR2024204A1/fr not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112816804A (en) * | 2019-11-15 | 2021-05-18 | 中车株洲电力机车研究所有限公司 | High-integration pulse testing device |
CN112816804B (en) * | 2019-11-15 | 2024-04-26 | 中车株洲电力机车研究所有限公司 | Pulse testing device with high integration level |
Also Published As
Publication number | Publication date |
---|---|
BE741924A (en) | 1970-05-04 |
DE1956560A1 (en) | 1970-06-11 |
YU32418B (en) | 1974-10-31 |
PL72701B1 (en) | 1974-08-30 |
RO58917A (en) | 1976-01-15 |
YU293769A (en) | 1974-04-30 |
FR2024204A1 (en) | 1970-08-28 |
JPS4844076B1 (en) | 1973-12-22 |
NL6917673A (en) | 1970-05-27 |
SE344839B (en) | 1972-05-02 |
CH501285A (en) | 1970-12-31 |
DE1956560B2 (en) | 1977-11-17 |
CS178063B2 (en) | 1977-08-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1408763A (en) | Lamp failure sensing mechaism for navigational light | |
US3838339A (en) | Logic test probe and indicator circuit | |
GB1294698A (en) | Circuit for monitoring faults in a signal lamp circuit | |
US3633196A (en) | Signal lamp monitoring circuit | |
GB958096A (en) | Position indicating device, more particularly for monitoring the position of landinggear and landing gear doors of aircraft | |
US3688294A (en) | Display annunciator using scr memory and digital logic circuitry | |
ES448143A1 (en) | Safety circuit, especially for elevators and the like | |
US3447145A (en) | Constant surveillance alarm system for a plurality of remote locations | |
ES442426A1 (en) | Tow vehicle and trailer combination having an electrical warning device | |
US3484770A (en) | Malfunction alarm annunciator | |
FR2367401A1 (en) | Vehicle headlamp monitoring circuit - has threshold switch coupled to reference circuit which with differential amplifier is connected to alarm signal generator | |
US3961224A (en) | Transient-free isolation monitor | |
KR840007365A (en) | Fault diagnosis device of color sorter | |
SU729689A1 (en) | Device for indicating fuse blow-out | |
GB1397706A (en) | Indicating devices for indicating the working states of parts of a machine | |
GB2170068A (en) | Line break detector | |
GB1537535A (en) | Failure detect circuit | |
SU465643A1 (en) | Automatic Recorder of the Number of a Faulty Circuit of the Board | |
SU1267269A1 (en) | Device for checking voltage | |
GB1087478A (en) | Control device for signal lamps | |
SU372546A1 (en) | DEVICE FOR CHECKING CORRECTION OF SIGNAL LAMPS | |
JPS6037670Y2 (en) | alarm display device | |
SU1182559A1 (en) | Defice for indicating conditions of checked objects | |
GB728948A (en) | Improvements relating to lamp proving arrangements | |
GB1316269A (en) | Monitor for an automatic regulator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |