NO20003778L - Circuit for operation of an LED light signal - Google Patents

Circuit for operation of an LED light signal

Info

Publication number
NO20003778L
NO20003778L NO20003778A NO20003778A NO20003778L NO 20003778 L NO20003778 L NO 20003778L NO 20003778 A NO20003778 A NO 20003778A NO 20003778 A NO20003778 A NO 20003778A NO 20003778 L NO20003778 L NO 20003778L
Authority
NO
Norway
Prior art keywords
light emitting
emitting diodes
diodes
light
electronic switches
Prior art date
Application number
NO20003778A
Other languages
Norwegian (no)
Other versions
NO20003778D0 (en
NO325779B1 (en
Inventor
Dirk Zimmermann
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of NO20003778D0 publication Critical patent/NO20003778D0/en
Publication of NO20003778L publication Critical patent/NO20003778L/en
Publication of NO325779B1 publication Critical patent/NO325779B1/en

Links

Classifications

    • 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
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L2207/00—Features of light signals
    • B61L2207/02—Features of light signals using light-emitting diodes (LEDs)

Abstract

The breaking distances of electronic switches (T) are parallel connected in relation to the light emitting diodes (LD) of a luminous signal, by means of which they are short circuited when no supply voltage (U=) is available. The interference voltage coupled to the light diodes approximately on the supply lines (L1, L2) cannot light the luminous diodes. Once the supply voltage for the light emitting diodes exceeds a given threshold value, the short circuits are eliminated and the light emitting diodes activated. The electronic switches are preferably embodied as self-conductive field effect transistors whose source gate distances are parallel connected to the series resistors that are series connected to the corresponding series resistors (R).
NO20003778A 1998-01-21 2000-07-21 Circuit for operation of an LED light signal NO325779B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19802895A DE19802895A1 (en) 1998-01-21 1998-01-21 Circuit for operating LED light display e.g. for traffic control lighting
PCT/DE1999/000180 WO1999038361A1 (en) 1998-01-21 1999-01-15 Circuit for operating an led luminous signal

Publications (3)

Publication Number Publication Date
NO20003778D0 NO20003778D0 (en) 2000-07-21
NO20003778L true NO20003778L (en) 2000-09-20
NO325779B1 NO325779B1 (en) 2008-07-14

Family

ID=7855707

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20003778A NO325779B1 (en) 1998-01-21 2000-07-21 Circuit for operation of an LED light signal

Country Status (5)

Country Link
EP (1) EP1051882B1 (en)
AT (1) ATE205997T1 (en)
DE (2) DE19802895A1 (en)
NO (1) NO325779B1 (en)
WO (1) WO1999038361A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19846753A1 (en) * 1998-10-07 2000-04-13 Siemens Ag Circuit arrangement for operating a light sign
NL1014865C2 (en) * 2000-04-07 2001-10-09 Nma Railway Signalling B V Signal comprises light-emitting unit in housing with number of light sources, which by means of conduits are connected to external feed source and also incorporates a light source activator
DE10164561B4 (en) * 2001-12-14 2004-03-04 Siemens Ag Circuit arrangement for operating an LED signal
DE102004033070B3 (en) * 2004-07-08 2006-01-12 Theben Ag Circuit arrangement for half-wave detection of a 230 V AC voltage
DE102014101421B3 (en) * 2014-02-05 2015-07-02 Gira Giersiepen Gmbh & Co. Kg Electrical circuit for the building system technology to avoid caused by capacitive coupling currents
DE102014203007A1 (en) * 2014-02-19 2015-08-20 Zumtobel Lighting Gmbh Circuitry and method for monitoring current flow through LEDs

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS556687A (en) * 1978-06-29 1980-01-18 Handotai Kenkyu Shinkokai Traffic use display
NL8300449A (en) * 1983-02-07 1984-09-03 Philips Nv OPTICAL INDICATOR.
GB8512424D0 (en) * 1985-05-16 1985-06-19 Dewhurst & Partner Plc Operation & control of light emitting diodes
FR2724749A1 (en) * 1994-09-15 1996-03-22 Sofrela Sa LED lamps with integral controller for road traffic control signals
DE19533116A1 (en) * 1995-09-07 1997-03-13 Siemens Ag Driver circuit for a light emitting diode
DE19627475C2 (en) * 1996-07-08 2000-12-07 Siemens Ag Circuit arrangement for signaling devices in road traffic systems

Also Published As

Publication number Publication date
DE59900274D1 (en) 2001-10-25
NO20003778D0 (en) 2000-07-21
DE19802895A1 (en) 1999-07-22
ATE205997T1 (en) 2001-10-15
NO325779B1 (en) 2008-07-14
EP1051882B1 (en) 2001-09-19
WO1999038361A1 (en) 1999-07-29
EP1051882A1 (en) 2000-11-15

Similar Documents

Publication Publication Date Title
US20090322252A1 (en) Led driving circuit and a mosfet switch module thereof
SG156523A1 (en) Signal line driver circuit, light emitting device and driving method thereof
DE60325042D1 (en) LED DIMMER CONTROL
ATE457527T1 (en) INTEGRATED POWER CIRCUIT WITH DISTRIBUTED GATE DRIVER
JP2007161012A (en) Vehicular light emission device
TW200618671A (en) LED driving semiconductor circuit and LED driving apparatus including the same
FR2864418B1 (en) POWER SUPPLY DEVICE FOR LIGHT EMITTING DIODES, AND LIGHT PROJECTOR COMPRISING SUCH A DEVICE
ATE399452T1 (en) VEHICLE LIGHTING DEVICE AND METHOD FOR CONTROLLING A VEHICLE LIGHTING DEVICE
NO20003778L (en) Circuit for operation of an LED light signal
ATA66699A (en) PROTECTIVE CIRCUIT FOR AN ELECTRONIC DEVICE
ATE395675T1 (en) HAZARD DETECTORS IN PARTICULAR FIRE OR BURGLAR DETECTORS
NO20042998L (en) Circuit device for operation of light signal
AU2003242770A1 (en) Light emitting device, in particular traffic signal light emitting device, which is composed of light emitting diodes
NO20045375L (en) Circuit for operation of a light signal
US10660169B1 (en) Digital standby control of a lighting driver using peak detection of pulse width modulated output reference control signal
CN219068417U (en) LED standby low-power-consumption circuit
US20230104593A1 (en) Light source module and lighting circuit
WO2023234210A1 (en) Vehicle lighting fixture lighting circuit and vehicle lighting fixture including same
KR960019047A (en) Indicator brightness control
SU1345319A1 (en) Schmitt flip-flop
SE9803473D0 (en) Process at a phosphorescent marker
TWI479943B (en) Input voltage transfer apparatus for light emitting diode lighting system
DE58906431D1 (en) Protection circuit for a switching transistor.
TW200741619A (en) Current control circuit device for LED module
DE502007001907D1 (en) DEVICE FOR CHECKING AN ELECTROTECHNICAL BOARD WITH A LADDER RAIL

Legal Events

Date Code Title Description
MM1K Lapsed by not paying the annual fees