A DC/AC inverter provided for transforming a DC voltage source into an AC
power source, wherein the AC signal is used for driving a fluorescent
lamp. The inverter comprises a half-bridge switch circuitry electrically
connected to the DC voltage source for outputting an AC signal, a
resonant tank electrically connected between the half-bridge switch
circuitry and the fluorescent lamp, for stepping up and filtering the AC
signal into a high-voltage AC power source which is supplied to a load,
and a controller feeding back an output of the fluorescent lamp,
providing a pulse width modulation signal for turning on and off the
half-bridge switch circuitry, such that the fluorescent lamp can operate
consistently and provide a consistent brightness.