A four-diode bridge assembly, commonly known as a bridge rectifier, is an electrical circuit used to convert AC to DC. It consists of four diodes arranged in a bridge configuration with both halves of an AC waveform to be rectified, which produces a pulsating DC output. This design is used to create full-wave rectification to improve power conversion compared to single-diode rectifiers. Bridge rectifiers are widely used in power supplies, motor controllers, and electronic circuits requiring DC voltage from an AC source. Heat dissipation, voltage rating, and current capacity are key considerations in their design.