FLUORESCENT LAMP DRIVE DEVICE, DRIVE METHOD, LIGHT EMISSION DEVICE, AND LIQUID CRYSTAL TELEVISION

摘要

A drive device (100) includes an inverter and supplies an AC voltage Vac to CCFL2 as a drive object. A first detection signal generation unit (30a) generates a first detection signal (S1) generated when the first CCFL (2a) is driven by an AC voltage Vac (1). A second detection signal generation unit (30b) generates a second detection signal (S2) generated when the second CCFL2b is driven by an AC voltage Vac (2). An error detection circuit (34) generates an error detection signal (S4) based on a difference between the amplitude of the first detection signal (S1) and the amplitude of the second detection signal (S2). The drive device (100) compares the error detection signal (S4) to a predetermined threshold value and executes a circuit protection in accordance with the comparison result.