Patent ID: 8710769
Filing Date: 2014-04-29
Classification: H05B

Abstract:
1. A discharge lamp lighting circuit comprising: a first DC/DC converter configured to generate from an input voltage a drive voltage to be applied to a discharge lamp of a driven object; a first drive voltage generating path which has one end to which the input voltage is applied, and at the other end of which is an output capacitor on an output side of the DC/DC converter; a second drive voltage generating path which has one end to which the input voltage is applied, and at the other end of which is the output capacitor, and which is different from the first drive voltage generating path; and a control circuit configured to control ON/OFF of the first drive voltage generating path, wherein said discharge lamp lighting circuit is arranged so that the voltage of the output capacitor when the first drive voltage generating path is in an ON-state becomes higher than the voltage of the output capacitor when the first drive voltage generating path is not ON-state.