GB8512424D0 - Operation & control of light emitting diodes - Google Patents

Operation & control of light emitting diodes

Info

Publication number
GB8512424D0
GB8512424D0 GB858512424A GB8512424A GB8512424D0 GB 8512424 D0 GB8512424 D0 GB 8512424D0 GB 858512424 A GB858512424 A GB 858512424A GB 8512424 A GB8512424 A GB 8512424A GB 8512424 D0 GB8512424 D0 GB 8512424D0
Authority
GB
United Kingdom
Prior art keywords
light emitting
control
emitting diodes
diodes
light
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.)
Pending
Application number
GB858512424A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dewhurst and Partner PLC
Original Assignee
Dewhurst and Partner PLC
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 Dewhurst and Partner PLC filed Critical Dewhurst and Partner PLC
Priority to GB858512424A priority Critical patent/GB8512424D0/en
Publication of GB8512424D0 publication Critical patent/GB8512424D0/en
Priority to GB08611525A priority patent/GB2175465A/en
Pending legal-status Critical Current

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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/59—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits for reducing or suppressing flicker or glow effects
GB858512424A 1985-05-16 1985-05-16 Operation & control of light emitting diodes Pending GB8512424D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB858512424A GB8512424D0 (en) 1985-05-16 1985-05-16 Operation & control of light emitting diodes
GB08611525A GB2175465A (en) 1985-05-16 1986-05-12 Light emitting diode operating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB858512424A GB8512424D0 (en) 1985-05-16 1985-05-16 Operation & control of light emitting diodes

Publications (1)

Publication Number Publication Date
GB8512424D0 true GB8512424D0 (en) 1985-06-19

Family

ID=10579241

Family Applications (2)

Application Number Title Priority Date Filing Date
GB858512424A Pending GB8512424D0 (en) 1985-05-16 1985-05-16 Operation & control of light emitting diodes
GB08611525A Withdrawn GB2175465A (en) 1985-05-16 1986-05-12 Light emitting diode operating circuit

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB08611525A Withdrawn GB2175465A (en) 1985-05-16 1986-05-12 Light emitting diode operating circuit

Country Status (1)

Country Link
GB (2) GB8512424D0 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2218283B (en) * 1988-04-13 1992-09-30 Square D Co Pilot light assembly
DE19533116A1 (en) * 1995-09-07 1997-03-13 Siemens Ag Driver circuit for a light emitting diode
DE19802895A1 (en) * 1998-01-21 1999-07-22 Siemens Ag Circuit for operating LED light display e.g. for traffic control lighting
DE102009050203B4 (en) * 2009-10-21 2012-05-03 Osram Ag Device with a suppression circuit of a residual light
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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3801866A (en) * 1972-12-11 1974-04-02 P Schmidgall Flashing novelty device
DE2364301A1 (en) * 1973-12-22 1975-06-26 Itt Ind Gmbh Deutsche LIGHT DIODE SWITCHED WITH A COIL
GB1543722A (en) * 1976-06-11 1979-04-04 Ferranti Ltd Display device energisation circuits
NL8300449A (en) * 1983-02-07 1984-09-03 Philips Nv OPTICAL INDICATOR.

Also Published As

Publication number Publication date
GB2175465A (en) 1986-11-26
GB8611525D0 (en) 1986-06-18

Similar Documents

Publication Publication Date Title
GB2161021B (en) Light emitting diode array
GB8521503D0 (en) Holder for light emitting diode
GB2104266B (en) Control of a light emitting diode array
GB2192268B (en) Light source unit
EP0424359A3 (en) Device for emitting multislit lights
GB8630856D0 (en) Semiconductor light emitting device
GB8323243D0 (en) Light emitting diode
EP0170481A3 (en) Semiconductor light emitting device
GB2178892B (en) Light emitting device
GB8609691D0 (en) Attachment member for light bulb
GB8622871D0 (en) Emergeny light
GB8512424D0 (en) Operation & control of light emitting diodes
GB8812496D0 (en) Light emitting devices
AU3098284A (en) Light emitting diode lamp assembly
GB2173039B (en) Light emitting element
GB8613660D0 (en) Driving light source
GB2178867B (en) A light source assembly
DK164680C (en) CONTROL CLUTCH FOR LIGHT-EMITTING DIODE
GB8721491D0 (en) Light emissive diode
GB8423544D0 (en) Control of light emitting diode array
GB8715536D0 (en) Light emitting diode device
GB8505117D0 (en) Light emitting diode compensation
GB2189898B (en) Light valve
GB8513434D0 (en) Light control
GB8404590D0 (en) Light emitting diode compensation