Half Wave Rectifier

1. Dr. Paras Trivedi
Shree J.P.Arts & Science College
Half Wave Rectifier

2. ALTERNATING CURRENT (AC) IS THAT CURRENT WHICH REVERSES
DIRECTION PERIODICALLY
DIRECT CURRENT (DC) IS THE ONE IN WHICH THE DIRECTION OF CURRENT
REMAINS SAME

3. 1.Step Down Transformer
The function of step down
transformer is to convert
high A.C. Voltage(230 V) to
Low A.C. Voltage (15V,12V
etc)Because we can't apply
high ac voltage to diode
directly
2. Semiconductor Diode
Building Blocks of Rectifier

4. Diode is a semiconductor switching device Which has two terminal
1. Anode
2. Cathode
Diode can be conncted in any circuit either in forward bias or reverse bias

6. AC Voltage is first stepped down then applied to the diode
During +ve Half Cycle Point A Will be at positive potential whereas point
B will be at –ve Potential
Diode D Will be in Forward Bias and behave like a close switch
And positive half cycle will be passed as it is As Shown in fig
Working:

7. During Negative Half Cycle PointA will beAt Negative Potential as Compared
to Point B
SoDiode is in Reverse Bias and Behaves Like an OpenSwitch and negative
half cycle does not pass to the load resistance
Working:

8. Input-Output Waveforms