Unlock instant, AI-driven research and patent intelligence for your innovation.

Circuit arrangement and method for igniting a discharge lamp

A circuit device, discharge lamp technology, applied in lighting devices, electric light sources, electrical components, etc., can solve the problems of ignition energy fluctuation, small ignition pulse, low primary current, etc.

Inactive Publication Date: 2011-01-26
OSRAM GMBH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spark gap has the disadvantage that the breakdown voltage has a large tolerance and the ignition energy present in the primary circuit by charging the ignition capacitor C1 thus also fluctuates strongly
However, semiconductor switches have the disadvantage of a high internal resistance compared to spark gaps, which leads to significantly lower primary currents and thus also significantly smaller ignition pulses

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Circuit arrangement and method for igniting a discharge lamp
  • Circuit arrangement and method for igniting a discharge lamp
  • Circuit arrangement and method for igniting a discharge lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] figure 2 A first embodiment is shown of a circuit arrangement according to the invention for starting a discharge lamp with a diode D1 as decoupling element and with a spark gap SG as a first switch. Via diode D1 it is possible to apply a higher voltage U2 to spark gap SG than to ignition capacitor C1. For this purpose, the cathode of the diode is connected to the spark gap SG. According to the invention, the ignition capacitor C1 is charged up to a first predetermined voltage U1 in order to ensure a constant ignition energy. A second voltage U2 is applied to the spark gap SG, which second voltage is high enough for the spark gap SG to break down (ie switch on). This can be done, for example, by means of an external voltage source, not shown here. The two voltages are decoupled from one another via diode D1 and can be adjusted independently. A prerequisite for this is, of course, that the minimum breakdown voltage of the spark gap is above the first voltage U1 . T...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A circuit arrangement for starting a discharge lamp, with a primary circuit, which comprises a series circuit comprising an inductance (L), a starting capacitor (C1) and a first switch (SG), the switch being in the form of a threshold value switch, and the inductance comprising the primary winding (L1) of the starting transformer (TR), and the primary circuit being designed to generate a starting pulse for the discharge lamp at the secondary winding (L2) of a starting transformer (TR), the primary circuit having two decoupled voltages, a first voltage, which is correlated substantially with the energy of the starting pulse, and a second voltage, which controls the operating time of the switch, the first voltage being lower than the threshold value of the first switch.

Description

technical field [0001] The invention relates to a circuit arrangement for starting a discharge lamp having a primary circuit comprising a series circuit of a first switch, an ignition capacitor and an inductor, wherein the switch is implemented as a threshold switch and the inductor comprises the primary of an ignition transformer winding; and the primary circuit is constructed to generate an ignition pulse for the discharge lamp on the secondary winding of the ignition transformer. Background technique [0002] The invention is based on a circuit arrangement for starting a discharge lamp of the type according to the main claim. [0003] figure 1 A circuit arrangement according to the prior art for starting a discharge lamp is shown, in which a large circuit current is generated in the primary circuit via the primary winding L1 of the starting transformer TR, which is converted into a high starting voltage U3 on the secondary side . The ignition voltage U3 is applied to t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/14
CPCH05B41/2881H05B41/04
Inventor 约阿希姆·米尔施勒格尔
Owner OSRAM GMBH