Full Wave Rectifier
Category: Analog Circuits
Designer: RANA MUHAMMAD ADNAN KHALIL
Notes
This circuit is designed and simulated in Proteus 7.10. In this circuit a full wave rectifier is simulated and working of this circuit is given below. 1. A diode bridge is used to make full wave rectifier. 2. In this circuit you will learn that how a full wave rectifier is made using four diodes (diode bridge) and how it works. 3. A sine wave signal of peak 6V is applied. 4. A diode bridge is added in series of sinosoidal voltage and a resistor of 1K ohm is placed to complete the closed path of circuit. 5. The output is taken across the resistor, which is shown in yellow color. 6. A sinosoidal wave has two cycles, positive cycle and negative cycle. 7. When positive cycle comes, which means positive voltage at upper wire, the two diodes become forward bias (the upper right diode and lower left diode of text "BR1") and remaining two diodes become reverse bias. 8. When negative cycle comes, which means negative voltage at upper wire, the two diodes become forward bias (the upper left diode and lower right diode of text "BR1") and remaining two diodes become reverse bias. 9. When a diode is forward bias, it is in conduction mode and signal passes through diode. The voltage drop across each diode is 0.7V. 10. There are two diodes forward bias in series, therefore in each cycle voltage drop is 1.4V (0.7V+0.7V). 11. The amplitude of yellow wave is 1.4V less than input volt (6V) because 0.7V is droped across each diode. 12. The direction of current through resistor is same in each cycle, which is shown in using constant arrow. 13. This is called full wave rectifier. Applications: 1. This circuit can be used to understand full wave rectifier. 2. This circuit can be used to make dc voltage power supply from ac voltage.