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Circuit arrangement and method for operating at least one discharge lamp

A circuit device and a technology for discharge lamps, which are applied in the field of circuit devices and can solve problems such as uselessness

Active Publication Date: 2015-12-30
OSRAM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] A disadvantage of the treatment method known from the mentioned DE 10 2007 057 772 A1 is that it sometimes leads to good results, but often also leads to useless results

Method used

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  • Circuit arrangement and method for operating at least one discharge lamp
  • Circuit arrangement and method for operating at least one discharge lamp
  • Circuit arrangement and method for operating at least one discharge lamp

Examples

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Embodiment Construction

[0065] figure 2 A schematic diagram of an exemplary embodiment of a circuit arrangement 10 according to the invention for operating at least one discharge lamp La is shown. The circuit arrangement 10 includes a commutation arrangement, which here includes the switches S1 to S4 of the full bridge arrangement. A corresponding series circuit of switches S1 and S2 on the one hand and a corresponding series circuit of switches S3 and S4 on the other hand are coupled to an input comprising a first input terminal E1 and a second input terminal E2 . The discharge lamp La is coupled to an output of the circuit arrangement, the output comprising a first output connection A1 and a second output connection A2 .

[0066] The control device 12 is coupled to the commutation devices S1 to S4 for supplying at least one actuation signal to the commutation devices, in particular to control poles of the switches S1 to S4 . A first measuring device M1 coupled to the control device 12 is designe...

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PUM

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Abstract

The invention relates to a circuit arrangement (10) for operating at least one discharge lamp (La), which has a commutation device (S1 to S4) and a control device (12), said control device being connected to the commutation device (S1 to S4) S4) Coupling. A first measured value (MW11, MW12) is each determined by means of a first measuring device (M1) within a test operating phase in which the first electrode (E11) and the second electrode (E12) are asymmetrically charged with energy, said first The measured value represents the extent of the size of the electrode tip of the discharge lamp (La). A second measured value (MW2) is determined by means of a second measuring device (M2), which is associated with the current (I) through the discharge lamp (La) at least during the test operating phase. The control device ( 2 ) is designed such that the reversing device ( S1 to S4 ) is actuated at least as a function of determined first measured values ​​( MW11 , MW12 ) and second measured values ​​( MW21 , MW22 ). The invention also relates to a corresponding method for operating at least one discharge lamp (La).

Description

technical field [0001] The invention relates to a circuit arrangement for operating at least one discharge lamp, comprising a commutation device having an input for coupling to a DC voltage source and an output for coupling to at least one discharge lamp Terminal; control device, the control device is coupled with the commutation device for at least one control signal is provided to the commutation device; the first measurement device, the first measurement device is coupled with the control device, wherein the first measurement device is designed to determine a first measured value representing the extent of the size of the electrode tip of at least one discharge lamp, wherein the control device is designed to control the reversing device within the test operating phase so that the first and second electrodes Asymmetrically energized, wherein the control device is also designed to determine the first measured value during the asymmetrically energized first electrode on the on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B41/292
CPCH05B41/2928H05B41/2887H05B41/28H05B41/36
Inventor 卡伊·沃尔特诺贝特·马格
Owner OSRAM GMBH