| 摘要 |
PROBLEM TO BE SOLVED: To provide a discharge tube driving circuit of which, cost is reduced and reliability is improved by eliminating a ballast capacitor and stabilizing control by using a ferroresonance transformer for a cold cathode discharge tube driving circuit. SOLUTION: A ferroresonance circuit is constructed by a plurality of semiconductor switches, and a transformer and a capacitor having nonlinear inductor element, and power is boosted and supplied to the discharge tube. |
