Patent ID: 9119273
Filing Date: 2015-08-25
Classification: H05B,Y02B

Abstract:
1. A compact fluorescent lamp (CFL) ballast driver comprising: a first and a second AC voltage terminal, and a neutral AC voltage terminal; a full wave rectifier electrically coupled between the first AC voltage terminal and the neutral AC input terminal; the full wave rectifier including a branch electrically coupled between the second AC voltage terminal and the neutral AC input terminal; a resonator circuit including at least two inductors, and configured to provide an output voltage to a CFL lamp; a first state detector circuit configured to monitor the first AC voltage terminal; a second state detector circuit configured to monitor the second AC voltage terminal; the first and the second state detector circuits configured to activate respective first and second switches; the first switch configured to shunt one inductor of the resonator circuit; and the second switch configured to shunt another inductor of the resonator circuit.