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FI101187B1 - With the measurement of lamp power, an adjustable electronic connection means is provided - Google Patents

With the measurement of lamp power, an adjustable electronic connection means is provided

Info

Publication number
FI101187B1
FI101187B1 FI970017A FI970017A FI101187B1 FI 101187 B1 FI101187 B1 FI 101187B1 FI 970017 A FI970017 A FI 970017A FI 970017 A FI970017 A FI 970017A FI 101187 B1 FI101187 B1 FI 101187B1
Authority
FI
Finland
Prior art keywords
measurement
connection means
lamp power
electronic connection
adjustable electronic
Prior art date
Application number
FI970017A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI101187B (en
FI970017A0 (en
Inventor
Erkki Ahonen
Jari Heine
Hannu Vihinen
Teijo Viljanen
Original Assignee
Helvar Oy
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 Helvar Oy filed Critical Helvar Oy
Priority to FI970017A priority Critical patent/FI101187B1/en
Publication of FI970017A0 publication Critical patent/FI970017A0/en
Priority to EP97660148A priority patent/EP0853445A1/en
Application granted granted Critical
Publication of FI101187B publication Critical patent/FI101187B/en
Publication of FI101187B1 publication Critical patent/FI101187B1/en

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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3925—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by frequency variation
FI970017A 1997-01-03 1997-01-03 With the measurement of lamp power, an adjustable electronic connection means is provided FI101187B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI970017A FI101187B1 (en) 1997-01-03 1997-01-03 With the measurement of lamp power, an adjustable electronic connection means is provided
EP97660148A EP0853445A1 (en) 1997-01-03 1997-12-19 Controllable or dimmable electronic ballast provided with a lamp power measurement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI970017A FI101187B1 (en) 1997-01-03 1997-01-03 With the measurement of lamp power, an adjustable electronic connection means is provided
FI970017 1997-01-03

Publications (3)

Publication Number Publication Date
FI970017A0 FI970017A0 (en) 1997-01-03
FI101187B FI101187B (en) 1998-04-30
FI101187B1 true FI101187B1 (en) 1998-04-30

Family

ID=8547417

Family Applications (1)

Application Number Title Priority Date Filing Date
FI970017A FI101187B1 (en) 1997-01-03 1997-01-03 With the measurement of lamp power, an adjustable electronic connection means is provided

Country Status (2)

Country Link
EP (1) EP0853445A1 (en)
FI (1) FI101187B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110761262B (en) * 2019-10-14 2020-09-11 浙江大学 Self-powered high-speed railway foundation monitoring system and monitoring method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0422255B1 (en) * 1989-10-09 1994-03-02 Siemens Aktiengesellschaft Electronic ballast
DE4018127A1 (en) * 1990-06-06 1991-12-12 Zumtobel Ag METHOD AND CIRCUIT FOR CONTROLLING THE BRIGHTNESS (DIMMING) OF GAS DISCHARGE LAMPS
US5424611A (en) * 1993-12-22 1995-06-13 At&T Corp. Method for pre-heating a gas-discharge lamp
US5656891A (en) * 1994-10-13 1997-08-12 Tridonic Bauelemente Gmbh Gas discharge lamp ballast with heating control circuit and method of operating same
EP0779016B1 (en) * 1995-06-29 2001-10-31 Koninklijke Philips Electronics N.V. Circuit arrangement
US5612595A (en) * 1995-09-13 1997-03-18 C-P-M Lighting, Inc. Electronic dimming ballast current sensing scheme

Also Published As

Publication number Publication date
EP0853445A1 (en) 1998-07-15
FI101187B (en) 1998-04-30
FI970017A0 (en) 1997-01-03

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Legal Events

Date Code Title Description
FG Patent granted

Owner name: OY HELVAR

MA Patent expired