| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inverter circuit for a CCFL excelling in low-cost properties and safety, as well as, having less loss of power and heat generation, and less constraints at mounting. <P>SOLUTION: The inverter circuit is provided with a control means 10 for detecting and feeding back alternating-current input current Is of a primary winding of a step-up transformer T2 for impressing a high-voltage secondary voltage on a CCFL (cold-cathode fluorescent lamp) 20, and the detecting means of the current Is is to be constituted of a capacitive element Cs, interposed in series with the primary winding of the step-up transformer T2, and a rectifying circuit configuring an alternating current voltage divided by the capacitive element Cs into a direct current. <P>COPYRIGHT: (C)2011,JPO&INPIT |
