Fullvågsrekifiering

Fullvågsrekifiering, often translated as full-wave rectification, is a process in electronics that converts alternating current (AC) into direct current (DC). Unlike half-wave rectification, which only utilizes half of the AC waveform, full-wave rectification uses both the positive and negative halves of the AC input signal. This results in a more continuous and less fluctuating DC output, making it more suitable for many electronic applications.

There are two primary methods for achieving full-wave rectification: center-tapped transformers and bridge rectifiers. A center-tapped transformer requires a specific transformer winding and two diodes. The negative portion of the AC waveform is effectively inverted and combined with the positive portion, producing a pulsating DC. The bridge rectifier, on the other hand, uses four diodes arranged in a bridge configuration. This configuration redirects the current flow so that regardless of the AC input's polarity, the current through the load always flows in the same direction.

The output of a full-wave rectifier is still pulsating DC, meaning it varies in amplitude but does not change polarity. To achieve a smoother, more stable DC voltage, filtering circuits, typically employing capacitors, are used in conjunction with the rectifier. These filters smooth out the ripples in the rectified waveform, bringing it closer to a constant DC value. Full-wave rectification is a fundamental technique used in power supplies for a wide range of electronic devices.