Electronic operating device for operating at least one discharge lamp

Abstract

Electronic operating device for operating at least one discharge lamp (La) having a two-pole connection for connecting the electronic operating device to a supply voltage by way of a first pole and a second pole; a filter apparatus (10, 12), which is coupled to the two-pole connection, for filtering EMC interference; a rectifier (14) which is coupled to the filter apparatus (10, 12) and has a first output connection (A1) and a second output connection (A2), wherein the first output connection (A1) for providing a first reference potential is coupled to a first voltage rail (16) and the second output connection (A2) for providing a second reference potential is coupled to a second voltage rail (18), wherein the rectifier (14) is designed to provide a DC voltage between its first output connection (A1) and its second output connection (A2); an inverter (26) with at least a first electronic switch (S1) and a second electronic switch (S2), which inverter is coupled between the first voltage rail (16) and the second voltage rail (18), wherein the centre point of the inverter (26) is coupled to a connection for the at least one discharge lamp (La); and a monitoring and control apparatus (22), which is coupled between the first voltage rail (16) and the second voltage rail (18), and has at least one input connection which can be coupled to the at least one discharge lamp (La), in order to monitor at least one operating parameter of the at least one discharge lamp (La); wherein the electronic operating device also comprises a decoupling network (24) with at least one input connection (E4) and at least one output connection (A5), wherein the at least one input connection (E4) of the decoupling network (24) is coupled to one of the voltage rails (16, 18), and wherein the at least one output connection (A5) of the decoupling network (24) is coupled to one of the poles (L, N).

Description

technical field [0001] The invention relates to an electronic operating device for operating at least one discharge lamp, the electronic operating device having: a bipolar connection for connecting the electronic operating device to a supply voltage with a first pole and a second pole; A filter device coupled to the terminals of the two poles for filtering EMC disturbances; a rectifier coupled to the filter device and having a first output terminal and a second output terminal, wherein the first output terminal is coupled to the first voltage rail for providing a first reference potential, and a second output terminal coupled to a second voltage rail for providing a second reference potential, wherein the rectifier is designed to provide a DC voltage between its first and second output terminals; the inverter, having at least one first electronic switch and at least one second electronic switch coupled between a first voltage rail and a second voltage rail, wherein the midpoin...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, such highly sensitive monitoring and control devices are housed in metal housings, which leads to high costs and can only be properly used when a protective earth terminal is available

Alternatively, the switch-off threshold is selected to be relatively high, however, this leads to failure of the electronic drive in the event of a strong increase in the lamp ignition voltage, or must be designed appropriately for this case.

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