DE3338464C2 - - Google Patents
Info
- Publication number
- DE3338464C2 DE3338464C2 DE19833338464 DE3338464A DE3338464C2 DE 3338464 C2 DE3338464 C2 DE 3338464C2 DE 19833338464 DE19833338464 DE 19833338464 DE 3338464 A DE3338464 A DE 3338464A DE 3338464 C2 DE3338464 C2 DE 3338464C2
- Authority
- DE
- Germany
- 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
- 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
-
- 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
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
- H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
- H05B41/2986—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against internal abnormal circuit conditions
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833338464 DE3338464A1 (de) | 1983-10-22 | 1983-10-22 | Hochfrequenz-helligkeitssteuerung fuer leuchtstofflampen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833338464 DE3338464A1 (de) | 1983-10-22 | 1983-10-22 | Hochfrequenz-helligkeitssteuerung fuer leuchtstofflampen |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3338464A1 DE3338464A1 (de) | 1985-05-15 |
DE3338464C2 true DE3338464C2 (US20080094685A1-20080424-C00004.png) | 1987-03-05 |
Family
ID=6212527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19833338464 Granted DE3338464A1 (de) | 1983-10-22 | 1983-10-22 | Hochfrequenz-helligkeitssteuerung fuer leuchtstofflampen |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3338464A1 (US20080094685A1-20080424-C00004.png) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3709004A1 (de) * | 1987-03-19 | 1988-09-29 | Knobel Elektro App | Schaltungsanordnung zur speisung einer leuchtstofflampe |
US5493182A (en) * | 1994-02-24 | 1996-02-20 | Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen Mbh | Fluorescent lamp operating circuit, permitting dimming of the lamp |
DE10251504A1 (de) * | 2002-11-04 | 2004-05-19 | Endress + Hauser Flowtec Ag, Reinach | Verfahren und Vorrichtung zur Übertragung von digitalen Signalen über einen Optokoppler |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8402351A (nl) * | 1984-07-26 | 1986-02-17 | Philips Nv | Gelijkstroom-wisselstroomomzetter voor het voeden van een metaaldampontladingsbuis. |
US4933605A (en) * | 1987-06-12 | 1990-06-12 | Etta Industries, Inc. | Fluorescent dimming ballast utilizing a resonant sine wave power converter |
DE3910900A1 (de) * | 1989-04-04 | 1990-10-11 | Zumtobel Ag | Vorschaltgeraet fuer eine entladungslampe |
GB8910856D0 (en) * | 1989-05-11 | 1989-06-28 | Zetetic Design Ltd | Electronic ballast for discharge lamps |
FI98876C (fi) * | 1989-12-29 | 1997-08-25 | Zumtobel Ag | Kytkentälaite ja menetelmä kaasunpurkauslampun käyttämiseksi (ja sytytämiseksi) |
US5583402A (en) * | 1994-01-31 | 1996-12-10 | Magnetek, Inc. | Symmetry control circuit and method |
US5959408A (en) * | 1997-08-07 | 1999-09-28 | Magnetek, Inc. | Symmetry control circuit for pre-heating in electronic ballasts |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3266600D1 (en) * | 1981-02-21 | 1985-11-07 | Emi Plc Thorn | Lamp driver circuits |
AU555174B2 (en) * | 1981-09-18 | 1986-09-18 | Oy Helvar | Electronic ballast for a discharge lamp |
US4415839A (en) * | 1981-11-23 | 1983-11-15 | Lesea Ronald A | Electronic ballast for gaseous discharge lamps |
-
1983
- 1983-10-22 DE DE19833338464 patent/DE3338464A1/de active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3709004A1 (de) * | 1987-03-19 | 1988-09-29 | Knobel Elektro App | Schaltungsanordnung zur speisung einer leuchtstofflampe |
US5493182A (en) * | 1994-02-24 | 1996-02-20 | Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen Mbh | Fluorescent lamp operating circuit, permitting dimming of the lamp |
DE10251504A1 (de) * | 2002-11-04 | 2004-05-19 | Endress + Hauser Flowtec Ag, Reinach | Verfahren und Vorrichtung zur Übertragung von digitalen Signalen über einen Optokoppler |
Also Published As
Publication number | Publication date |
---|---|
DE3338464A1 (de) | 1985-05-15 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: BZ PLANKENHORN GMBH & CO KG, 7208 SPAICHINGEN, DE |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: ECKERT ELEKTRONIK GMBH, 78591 DURCHHAUSEN, DE |
|
8339 | Ceased/non-payment of the annual fee |