An improved full bridge converter with multiple outputs for barrier discharge and U.V. lamp ballast

In this paper, an improved full bridge converter is presented to get multiple outputs for UV lamp and barrier discharge tube. It has a structure of two equivalent half bridge inverters that make one full bridge inverter. The proposed circuit has two types of outputs that are for U.V. lamp and the barrier discharge tube. The output can be controlled using frequency and PWM independently. To verify the proposed circuit, theoretical analysis and experimental results has been done using a prototype 250W power supply.