Mixing bridge type electric ballast

摘要: A mixed-bridge-type electronic ballast comprises a non-bridge BOOST converter for realizing power factor correction and bridge-type inverter constant output. bridge arm is shared by the so as to simplify circuit topology; works in mode of current interruption, duty ratio master control switch tube two converters adjusted respectively, realizes decoupling controlling correction, output signal inverter. By utilizing advantages digital control, through on/off time sequence each on reasonable arm, topology has characteristic soft foundation that three functions Therefore, modulating frequency high, volume small, efficiency high.