Fullwave Rectifiers

                     The diode works only when it is in forward bias, only the current flows through p-n junction diode and output current across the load is found.
                          If two diodes are connected in such a way that one diode conducts during one half of the input voltage and the other one conducts during the next half of the cycle, in a unidirectional can flow through the load during the full cycle of the impact voltage. This is known as full wave rectifier.
                 According to the diagram given below a center tapped transformer D1, and D2 are two p-n junction diodes with similar characteristics D1 conducts for negative half of the output voltage. Thus we get output voltage and the output current for the entire input cycle.

Circuit Diagram of Full Wave Diode Rectifier :

Full wave rectification can also be achieved using a bridge rectifier which is made of four diodes.
Circuit diagram of diode bridge rectifier full wave :

According to the figure, when D1 and D3 are forward biased, they conduct but D2 and D4 and on D1 and D3 are reverse biased in both cases load current in the same direction.
Bridge rectifier has several advantages over simple full wave rectifier. It performance and efficiency is better than that of the simple full time rectifier.

Input Voltage & Output Voltage Waveform :

full rectified wave
Now, different parameters for half wave rectifier is given below
The average of load current (Idc) :
Let, the load current be iL = Imsinωt

Ripple factor of half wave rectifier,

 

 #Team Circuitready

Halfwave Rectifier ..

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 V_in = Vsinωt 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.

 

 Circuit Diagram of Half Wave Rectifier

The basic diagram of half wave diode rectifier is given below

          For positive half cycle  
 

          For negative half cycle

 

Input voltage and Output Voltage Waveforms

 

Now, different parameters for half wave rectifier is given below
The average of load current (I_dc) :
Let, the load current be i_L = I_msinωt, 

Ripple factor of half wave rectifier,

The rms value of the load current (I_rms ),

                #Team Circuitready

Introduction to the Rectifiers

                  Simply , A rectifier is an electronic device that changes alternating current (AC) into direct current (DC). This process is called rectification. In the process of  rectification, we are used the diodes. (Diodes)

Ex : Our mobile phone chargers, Battery chargers etc..

Types of  Rectifiers :

1). Halfwave Rectifier 

2). Fullwave Rectifier

3). Fullwave Bridge Rectifier 

Rectifier Circuit.

#Team Circuitready