![]() The same principle is made use of in a half wave rectifier to convert AC to DC. In other words, a pn junction diode conducts current only when it is forward biased. From the theory part, you should know that a pn junction diode conducts current only in 1 direction. The operation of a half wave rectifier is pretty simple. If you are new to the concepts of a PN junction and its characteristics, I recommend you to read the half wave rectifier theory part first. To understand the operation of a half wave rectifier perfectly, you must know the theory part really well. Simply put, a half wave rectifier removes the negative half cycle of an AC input and allows only the positive cycles to pass creating a DC flow. The process of rectification is converting alternating current (AC) to direct current (DC). The output voltage is measured across load resistor RL.Īs part of our “ Basic Electronics Tutorial” series, we have seen that rectification is the most important application of a PN junction diode. Input voltage is given to a step-down transformer and the resulting reduced output of the transformer is given to the diode ‘D’ and load resistor RL. If you look at the above diagram, we are giving an alternating current as input. This property of the diode is very useful in creating simple rectifiers which are used to convert AC to DC. As you know a diode is to electric current like a one-way valve is to water, it allows electric current to flow in only one direction. ![]() A simple Half Wave Rectifier is nothing more than a single pn junction diode connected in series to the load resistor.
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