RMS value of a Half Wave rectifier :-
The RMS is defined as the room mean square value. For load current, the RMS value can be given as
The RMS value of the output Id given as
On substituting the value of I_RMS from the above equation for RMS voltage can be written as
Form Factor of a Half Wave Rectifier :
The ratio of the RMS value to the D.C value is defined as the form factor of that rectifier.
Upon general calculation, the value if the form factor is 1.57.
The efficiency of a half Wave Rectifier :
The efficiency of the rectifier is the ration between the generated output powers to the applied power.
The maximum efficiency produced is 40.6%.
Advantage :
- The half wave rectifier requires fewer components.
- The cost of the rectifier is less.
- It is very easy to assemble and due to less components.
- It is very simple to analyze on CRO because the designed circuit is simple and straight forward.
Disadvantage :
- The output of the rectifier is in the form of pulse which indicates the presence of ripples in the circuit.
- The ripple factor is very high.
- During rectification it consider either +ve half cycle or –ve half cycle of the supply. However, in the both the cases one cycle is ignored and causes power loss.
- The output voltage is very low.
- The TUF ( Transformer utilization factor) is very low.
- The output is require filter to be connected across the load because of the ripple generated at the O/P.