A synchronous converter, also known as a synchronous rectifier, is a device that converts alternating current (AC) to direct current (DC) while maintaining synchronization to the AC source. Some synonyms for a synchronous converter include synchronous rectifier, phase-controlled rectifier, and thyristor rectifier. Phase-controlled rectifiers use thyristors to switch the current between the AC source and the load, while thyristor rectifiers use a series of thyristors in a bridge configuration to convert the AC to DC. Additionally, frequency converters, cycloconverters, and voltage regulators may also be considered synonyms for synchronous converters due to their similar functions in controlling electrical power. Synchronous converters play a crucial role in several applications, including power electronics, telecommunications, renewable energy generation, and more.