| 摘要 |
An electric discharge lamp ignition device is provided with an inverter that is comprised of a transformer having a primary winding and first and second secondary windings, converts a direct current voltage to a high frequency voltage, and rises up the high frequency voltage through the transformer; a less than one electric discharge lamp connected between one terminal of the first secondary winding and one terminal of the second secondary winding; a first electric current detecting circuit that detects an electric current flowing through the first secondary winding, wherein one terminal of the first electric current detecting circuit is connected with the other terminal of the first secondary winding and the other terminal of the first electric current detecting circuit is connected with the ground terminal; a first voltage detecting circuit that detects a voltage between one terminal of the first secondary winding of the transformer and the ground; and a first electric current correcting circuit that corrects the electric current detected by the first electric current detecting circuit in response to the voltage detected by the first voltage detecting circuit, wherein the inverter has a control circuit that controls the corrected electric current to be a predetermined value. |
