half wave dc rectifire

1
HALF WAVE DIODE RECTIFIRE

• BY
• ASHVANI SHUKLA
• MANAGER(CI)
• BGR ENERGY

2
Introduction

• Electric current flows through a p - n junction
  diode when it is forward biased and we get output
  current through the load.
• Let, we supply a sinusoidal voltage Vin V sin?t
  as a source voltage. Now, if the input voltage is
  positive, the diode is forward biased and when
  that is negative, the diode is in reverse bias
  condition. When the input voltage is positive,
  i.e., for the positive cycle of the input
  voltage, the current flows through the diode. So,
  the current will flow through the load also and
  we obtain output voltage across the load. But for
  the negative half cycle of the input, the p-n
  junction get reverse biased and no current flows
  through the diode as a result we obtain zero
  current and zero voltage across the load. because
  load is resistive hence the output voltage and
  current waveform follow the shape of input
  voltage.

3
Circuit Diagram of Half Wave Rectifier

• The basic diagram of half wave diode rectifier is
  given below,

4
For positive half cycle
I load
5
For negative half cycle
6
Input voltage and Output Voltage Waveforms
7

• Now, different parameters for half wave rectifier
  is given below
• The average of load current (Idc) Let, the load
  current be iL Imsin?t,

Ripple factor of half wave rectifier,
8
The rms value of the load current (Irms ),