Introduction:- Half wave rectifier is the simplest form of rectification. It requires only one diode in circuit. Only positive half wave of ac voltage is rectified to dc output. Output voltage is not very smooth and contains more ripples.
Parts required:- A step down transformer of required voltage and current rating(say 12 volt 2 ampere). One number diode. Two filter condenser and resistance for pie filter circuit. All components are connected as per circuit diagram.
When ac 230 volt is given to primary winding 12 volt is induced in secondary winding. During positive half cycle diode gets forward bias and conduct current, which charges the capacitor. During negative half cycle diode gets reverse bias hence not conduct any current. During this time capacitor supplies the load current. In this circuit only half wave of ac voltage come in output that's why it is known as half wave rectifier. It is generally used in battery charging system where very smooth dc supply is not required. In cheap circuits only one capacitor is used which gives more ripples. To reduce ripples pie filter circuit with two capacitor as shown in circuit to be used. In many small current circuit series resistance is used in place of transformer to reduce voltage.
Parts required:- A step down transformer of required voltage and current rating(say 12 volt 2 ampere). One number diode. Two filter condenser and resistance for pie filter circuit. All components are connected as per circuit diagram.
No comments:
Post a Comment