Full-wave rectification is a circuit that rectifies AC. In this rectifying circuit, current flows through a rectifying device (such as a crystal diode) in a half cycle, and current flows through a second rectifying device in the other half cycle, and the connection of the two rectifying devices enables The current flowing through them flows through the load in the same direction. The difference between the waveform before and after full-wave rectification and half-wave rectification is to use two half-waves of AC in full-wave rectification, which improves the efficiency of the rectifier and makes the entire current easy to smooth. Therefore, full-wave rectification is widely used in rectifiers. The power transformer must have a center tap when applying a full-wave rectifier. The current direction through the load resistor R is always the same regardless of the positive half cycle or the negative half cycle.
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