Abstract: A cool cathode tube control circuit for being connected to a lighting device and a plurality of lamp tubes. The cool cathode tube control device includes a regulator control circuit for controlling a lighting device to provide a steady high voltage power source. A lighting control circuit serves for controlling the lighting device so as to drive a plurality of lamp tubes and adjusting the illuminations of the lamp tubes. An abnormality detecting circuit is connected to the lighting device for sensing abnormal signals. A control logic circuit is electrically connected to the regulator control circuit, lighting control circuit and abnormality detecting circuit for receiving and processing input signals from the abnormality detecting circuit so as to generate logic digital signals to be transferred to the regulator control circuit and the lighting control circuit. Thereby, the lighting device is driven so that the plurality of lamp tubes are actuated synchronously and have the same illumination.

Abstract: A cool cathode tube control circuit for being connected to a lighting device and a plurality of lamp tubes. The cool cathode tube control device includes a regulator control circuit for controlling a lighting device to provide a steady high voltage power source. A lighting control circuit serves for controlling the lighting device so as to drive a plurality of lamp tubes and adjusting the illuminations of the lamp tubes. An abnormality detecting circuit is connected to the lighting device for sensing abnormal signals. A control logic circuit is electrically connected to the regulator control circuit, lighting control circuit and abnormality detecting circuit for receiving and processing input signals from the abnormality detecting circuit so as to generate logic digital signals to be transferred to the regulator control circuit and the lighting control circuit. Thereby, the lighting device is driven so that the plurality of lamp tubes are actuated synchronously and have the same illumination.