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(11) | EP 1 098 553 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Automatic lighting intensity regulating device |
(57) An automatic lighting intensity regulating device or "dimmer" (DM), utilizable in
particular for electronic reactors of fluorescent tubes, controlled by an electronic
circuit for the partial closing of the conduction angle, in order to supply a lamp
current (IL), for each cycle of the rectified network signal (IR) , only for a certain
amount of time, so as to minimize the production and operating costs of the device
(DM), with respect to those now offered on the market. |