jännitteenkorjauspiiri

A jännitteenkorjauspiiri, or voltage rectifier circuit, is an electronic circuit that converts alternating current (AC) into direct current (DC). This process is fundamental in many electronic devices that require a stable DC power supply, such as computers, mobile phones, and household appliances. The core component of most rectifier circuits is a diode, which allows current to flow in only one direction.

There are several common types of rectifier circuits. The simplest is the half-wave rectifier, which uses a single diode to allow only half of the AC waveform to pass through, resulting in a pulsating DC output. A more efficient design is the full-wave rectifier, which utilizes multiple diodes (typically four in a bridge configuration) to rectify both halves of the AC waveform, producing a smoother DC output with less ripple. The full-wave bridge rectifier is particularly popular due to its efficiency and the fact that it does not require a center-tapped transformer.

Following rectification, the pulsating DC output often contains significant ripple, which is an undesirable variation in voltage. To further smooth the DC output, rectifier circuits are commonly paired with a filter, such as a capacitor, which stores electrical energy and releases it to fill the gaps in the rectified waveform, thereby reducing the ripple. For applications requiring a very stable and constant DC voltage, a voltage regulator circuit is often employed after the filter stage.