driver includes first second and neutral ac voltage terminals a full wave rectifier between the first ac voltage terminal and the neutral ac input terminal and a separate branch between the second ac voltage terminal and the neutral ac input terminal a resonator circuit includes at least two inductors and provides its output voltage to a cfl lamp the driver includes a first state detector circuit to monitor the first ac voltage terminal and a second state detector circuit to monitor the second ac voltage terminal the first and second state detector circuits activate respective first and second switches the first switch shunts one inductor of the resonator circuit and the second switch shunts another inductor of the resonator circuit the driver can be housed in a cfl having a capper a three way lamp base adjacent to the capper and an arc tube application_number US 201314088968 A description fig1 depicts a block diagram of conventional cfl ballast circuit 100 the conventional ballast circuit includes full wave rectifier stage 110 with a buffer capacitor starter circuit 120 charges a capacitor to a threshold voltage of a diac which when conducting provides input to a half bridge h bridge circuit dc ac inverter 130 generates a high frequency signal for the fluorescent lamp the dc ac inverter circuit includes resonant circuit 132 and inductor 134 which generates an amplified voltage to trigger fluorescent lamp 140 to ignite fig2 schematically depicts conventional cfl ballast circuit 200 circuit 200 is an implementation of the block diagram depicted in fig1 a full wave rectifier formed by diodes d 5 d 6 d 7.