DE3002435A1 - Dimmer circuit for fluorescent lamp - conducts phase or pulse width or frequency of DC=AC converter to modify intensity - Google Patents
Dimmer circuit for fluorescent lamp - conducts phase or pulse width or frequency of DC=AC converter to modify intensityInfo
- Publication number
- DE3002435A1 DE3002435A1 DE19803002435 DE3002435A DE3002435A1 DE 3002435 A1 DE3002435 A1 DE 3002435A1 DE 19803002435 DE19803002435 DE 19803002435 DE 3002435 A DE3002435 A DE 3002435A DE 3002435 A1 DE3002435 A1 DE 3002435A1
- Authority
- DE
- Germany
- Prior art keywords
- converter
- circuit according
- circuit
- fluorescent lamp
- frequency
- 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.)
- Withdrawn
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
- H05B41/3924—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by phase control, e.g. using a triac
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
Schaltung zum stufenlosen Regulieren der Hellig- Circuit for stepless regulation of the brightness
keit (Dimmer) von Leuchtstofflampen Es ist bekannt, die Helligkeit von Leuchtstofflampen durch Phasenanschnittsteuerung zu regulieren. Diese Methode weist eine Reihe von Nachteilen auf: Die Elektroden müssen ständig geheizt werden, die Phasenanschnittsteuerung muß ständig eine Grundbelastung aufweisen, die Regelung läßt sich nur in einem relativ kleinen Bereich durchführen, der Wirkungsgrad ist schlecht und bei kleinen Leuchtstärken wird das 50 Hz-Flimmern stärker. speed (dimmer) of fluorescent lamps It is known the brightness to regulate fluorescent lamps through phase control. This method has a number of disadvantages: The electrodes must be constantly heated, the phase control must always have a basic load, the regulation can only be carried out in a relatively small area, which is the degree of efficiency bad and at low luminosities the 50 Hz flicker becomes stronger.
All diese Nachteile werden mit der erfindungsgemäßen Schaltung vermieden.All these disadvantages are avoided with the circuit according to the invention.
Diese Schaltung wirkt folgendermaßen: Die Netzspannung (üblicherweise 220 V, 50 Hz) wird gleichgerichtet. Die Gleichspannung wird einem an sich bekannten statischen Wechselrichter zugeführt, der eine Wechselspannung von 10 - 100 kHz erzeugt. Dieser Wechselrichter kann z.B. ein Flußwandler sein. Mit diesem Wandlertyp ist es möglich, die transformierte Leistung ohne großen Aufwand zu regulieren, indem man entweder die Speisegleichspannung, die Frequenz, die Impulsdauer und/ oder die Impulshöhe reguliert. Weiterhin hat dieser Wandlertyp den Vorteil, daß bei jedem Impuls eine Spannungsspitze entsteht, die die Ionisierung in der Leuchtstofflampe aufrechterhält bzw. einleitet. Dadurch ist es auch nicht notwendig, die Elektroden der Leuchtstofflampen ständig zu heizen.This circuit works as follows: The mains voltage (usually 220 V, 50 Hz) is rectified. The DC voltage is known per se static inverter which generates an alternating voltage of 10 - 100 kHz. This inverter can e.g. be a flux converter. With this type of converter is it possible to regulate the transformed power without much effort by either the DC supply voltage, the frequency, the pulse duration and / or the Pulse height regulated. Furthermore, this type of converter has the advantage that each Impulse creates a voltage spike that causes ionization in the fluorescent lamp maintains or initiates. As a result, it is also not necessary to use the electrodes of the fluorescent lamps constantly heating.
Es können auf Grund dieser Schaltung somit sogenannte "Kaltkathoden-Leuchtstofflampen" Verwendung finden. Weiterhin ist es möglich, durch eine geeignete Rückkopplung in dem Wandler den Brennstrom konstant zu halten, was bei den normal betriebenen Leuchtstofflampen durch eine Vorschaltdrossel bzw. -kondensator bewirkt wird. Der gleiche Effekt wird auch erreicht, wenn der Wandler als Streuflußwandler ausgebildet ist.Due to this circuit, so-called "cold cathode fluorescent lamps" can be used. Find use. It is also possible to use suitable feedback in the converter to keep the burning current constant, which is the case with normally operated fluorescent lamps is effected by a series choke or capacitor. The same effect will also achieved when the converter is designed as a leakage flux converter.
Die erfindungsgemäße Schaltung weist gegenüber den bisher bekannten folgende Vorteile auf: Betr.: Patentanmeldung: Schaltung zurd stv nlc--en Pegulieren der Helligkeit.....The circuit according to the invention has compared to the previously known the following advantages: Re: patent application: switching to the deputy nlc - en leveling the brightness .....
Sofortiger Start der Leuchtstofflampe ohne Starter, ohne Flackern, Regelbarkeit der Helligkeit von ca. 10 bis 1002; Hoher Wirkungsgrad, kein Flimmern, Brummfreiheit; Betrieb der Lampe mit Wechselstrom höherer Frequenz.Immediate start of the fluorescent lamp without starter, without flickering, Adjustability of the brightness from approx. 10 to 1002; High efficiency, no flicker, Hum-free; Operation of the lamp with alternating current of higher frequency.
In der beigefügten Zeichnung bedeuten: (1) der steuerbare Gleichrichter, der durch das Phasenschieberglied (6) mit Steller (7) geregelt wird.In the accompanying drawing: (1) the controllable rectifier, which is controlled by the phase shifter element (6) with actuator (7).
(2) der gemäß den Ansprüchen steuerbare DC/AC-Wandler; (3) der Transformator, der ggf. als Streutransformator ausgebildet sein kann; (4) eine handelsübliche Leuchtstofflampe; (5) der Stromwiderstand, der das Signal für die Stromgegenkopplung in den DC/AC-Wandler liefert.(2) the controllable DC / AC converter according to the claims; (3) the transformer, which can optionally be designed as a leakage transformer; (4) a commercially available fluorescent lamp; (5) the current resistance, which is the signal for the current negative feedback in the DC / AC converter supplies.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803002435 DE3002435A1 (en) | 1980-01-24 | 1980-01-24 | Dimmer circuit for fluorescent lamp - conducts phase or pulse width or frequency of DC=AC converter to modify intensity |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803002435 DE3002435A1 (en) | 1980-01-24 | 1980-01-24 | Dimmer circuit for fluorescent lamp - conducts phase or pulse width or frequency of DC=AC converter to modify intensity |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3002435A1 true DE3002435A1 (en) | 1981-08-06 |
Family
ID=6092809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19803002435 Withdrawn DE3002435A1 (en) | 1980-01-24 | 1980-01-24 | Dimmer circuit for fluorescent lamp - conducts phase or pulse width or frequency of DC=AC converter to modify intensity |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3002435A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0098285A1 (en) † | 1982-01-15 | 1984-01-18 | Minitronics Pty Ltd | Electronic high frequency controlled device for operating gas discharge lamps. |
EP0143884A1 (en) * | 1983-11-02 | 1985-06-12 | Arex Industries, Inc. | Energy-saving apparatus for dimming discharge lamps |
DE10253245A1 (en) * | 2002-11-15 | 2004-05-27 | Abb Patent Gmbh | Method and device for generating a supply voltage for lamps |
-
1980
- 1980-01-24 DE DE19803002435 patent/DE3002435A1/en not_active Withdrawn
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0098285A1 (en) † | 1982-01-15 | 1984-01-18 | Minitronics Pty Ltd | Electronic high frequency controlled device for operating gas discharge lamps. |
US5192897A (en) * | 1982-01-15 | 1993-03-09 | Minitronics Pty. Ltd. | Electronic high frequency controlled device for operating gas discharge lamps |
EP0098285B2 (en) † | 1982-01-15 | 1993-11-03 | Minitronics Pty. Ltd. | Electronic high frequency controlled device for operating gas discharge lamps |
EP0143884A1 (en) * | 1983-11-02 | 1985-06-12 | Arex Industries, Inc. | Energy-saving apparatus for dimming discharge lamps |
DE10253245A1 (en) * | 2002-11-15 | 2004-05-27 | Abb Patent Gmbh | Method and device for generating a supply voltage for lamps |
DE10253245B4 (en) * | 2002-11-15 | 2009-03-05 | Abb Ag | Method and device for generating a supply voltage for lighting means |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |