|
A rectifier circuit is used to convert alternating current (AC) to direct current (DC). The following circuit without a rectifier serves as an illustration:
In the lower circuit, the alternating current is applied directly to the load, causing the polarity of the voltage and the current flow to continuously change. This means that the load receives positive voltage during one period and negative voltage during the next period, resulting in an alternating current flow.
In contrast, in a rectifier circuit, a rectifier consisting of diodes would convert the alternating current into a pulsating direct current. The diodes allow current to flow only in one direction, thereby blocking or reversing the negative half-cycles of the alternating current. This produces a direct current that can be further smoothed to achieve a more stable direct voltage.
Without the rectifier, however, the circuit remains an AC supply, and the effects of the rectified voltage, such as the constant current direction, are absent.
|
