how a bridge operates as a full wave rectifier
A bridge rectifier is a type of full-wave rectifier that converts alternating current (AC) into direct current (DC). It consists of diodes arranged in a bridge configuration.
Here's how a bridge operates as a full-wave rectifier:
1. Alternating current (AC) enters the bridge rectifier through the input terminals.
2. Two diodes, known as the "input" or "positive" diodes, are connected in a series configuration between the AC input terminals and the output terminals.
3. The other two diodes, known as the "output" or "negative" diodes, are connected in a reverse series configuration between the output terminals and the AC input terminals.
4. When the AC input voltage is positive, the positive diodes conduct and allow the current to flow towards the output terminals.
5. When the AC input voltage is negative, the negative diodes conduct and allow the current to flow towards the output terminals as well.
6. As a result, the AC voltage is converted into a pulsating DC voltage at the output terminals, with the negative half-cycles of the AC inverted to positive half-cycles.
7. A filter capacitor is usually connected to the output terminals to smooth out the pulsating DC voltage into a more constant DC voltage.
8. The smoothed DC voltage is then available for use in various electronic devices or applications.
Overall, the bridge rectifier ensures that both halves of the AC cycle are utilized, resulting in a more efficient conversion of AC to DC compared to half-wave rectifiers.