Single phase Half-Wave rectifier

Circuit diagram: – A.C. voltage to be rectified is connected to the primary P1 P2 of a step-down transformer. S1 and S2 is a secondary coil of the same transformer. S1 is connected to the portion p of the p-n junction diode. S2 is connected to the portion n through the load resistance R. Output is taken across the load resistance R.

Working:- During the positive half-cycle of the input A.C., suppose P1 is negative and P2 is positive. On account of induction, S1 become positive, S2 become negative. The p-n junction diode is forward biased. The resistance of p-n junction diode becomes low. The forward current flows in the direction from positive half-cycle to negative half-cycle through load resistance as shown in figure. Thus, we get output across-load.

 

During the negative half cycle of the input A.C., P1 is positive and P2 is negative. On account of mutual induction, S1 become negative and S2 is positive. The p-n junction diode is reverse biased. It offers high resistance and hence there is no flow of current and thus no output across load. The process is repeated. In the output, we have current corresponding to one half of the wave, the other half is missing.

That Is why the process is called half wave rectification. It is not of much use. The output signal is available in bursts and not continuously. 

 

Related Topic to Single-phase half-wave rectifier

  1. AVERAGE AND RMS VALUE OF SINGLE-PHASE HALF-WAVE RECTIFIER
  2. Efficiency of single-phase half-wave rectifier
  3. Frequency Component of Half-Wave Rectifier Voltage and Current
  4. Ripple Factor of single phase Half-Wave rectifier
  5. Peak Inverse Voltage (PIV) of single phase half wave rectifier
  6. Peak current of single phase half wave rectifier
  7. Transformer Utilization Factor (TUF) of single phase half wave rectifier 
  8. Advantage and Disadvantage of single-phase half-wave rectifier

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