Islamic University of Gaza Faculty of Engineering Electrical Engineering Department Voltage Doublers For ideal diodes, C1 charges to Vm through D1 when the source is positive; C2 charges to Vm through D2 when the source is negative. The voltage across the load resistor is the sum of the capacitor voltages 2Vm. Voltage doubler circuits avoid using a transformer to step up the voltage, saving expense, volume, and weight. Introduction to Power Electronics Lecture 14

charges to Vm through D4 when the source is negative. Islamic University of Gaza Faculty of Engineering Electrical Engineering Department Capacitor C1 charges to Vm through D1 when the source is positive, and C2 charges to Vm through D4 when the source is negative. The output voltage is then 2Vm. Diodes D2 and D3 remain reverse-biased in this mode. Introduction to Power Electronics Lecture 14

CONTROLLED FULL-WAVE RECTIFIERS Islamic University of Gaza Faculty of Engineering Electrical Engineering Department CONTROLLED FULL-WAVE RECTIFIERS Introduction to Power Electronics Lecture 14

EXAMPLE 4-6 Islamic University of Gaza Faculty of Engineering Electrical Engineering Department EXAMPLE 4-6 Introduction to Power Electronics Lecture 14

RL Load, Discontinuous Current Islamic University of Gaza Faculty of Engineering Electrical Engineering Department RL Load, Discontinuous Current EXAMPLE 4-7 Introduction to Power Electronics Lecture 14

THREE-PHASE RECTIFIERS Islamic University of Gaza Faculty of Engineering Electrical Engineering Department THREE-PHASE RECTIFIERS Introduction to Power Electronics Lecture 14

Islamic University of Gaza Faculty of Engineering Electrical Engineering Department Introduction to Power Electronics Lecture 14