Täysiaaltokorjaajan

Täysiaaltokorjaaja, also known as a full-wave rectifier, is an electronic circuit that converts alternating current (AC) into direct current (DC). Unlike a half-wave rectifier, which only utilizes one half of the AC waveform, a full-wave rectifier converts both the positive and negative halves of the AC input into a pulsating DC output. This results in a more efficient conversion and a smoother DC output.

There are two common types of full-wave rectifiers: the center-tapped transformer rectifier and the bridge rectifier. The center-tapped transformer rectifier uses a transformer with a tap in the middle of its secondary winding. Two diodes are used, with each diode conducting during one half-cycle of the AC input. The bridge rectifier, on the other hand, uses four diodes arranged in a bridge configuration. This configuration eliminates the need for a center-tapped transformer, making it more versatile and widely used.

The output of a full-wave rectifier is still pulsating, meaning it varies in amplitude. To obtain a smoother DC output, a filter circuit, typically a capacitor, is added after the rectifier. The capacitor charges up during the peaks of the rectified waveform and discharges slowly between peaks, smoothing out the voltage fluctuations. Further smoothing can be achieved using inductors or more complex filtering techniques. Full-wave rectifiers are fundamental components in power supplies for electronic devices, battery chargers, and many other applications where AC needs to be converted to DC.