A High-efficiency Method for Linear Precision AC Voltage Regulation and Filtering

This paper studies and proposes a high-efficiency method for linear precision AC voltage regulation and filtering, which can increase the load-carrying capacity and load adaptability of the voltage-regulated output while maintaining the same filtering effect. Taking the emitter-output linear circuit as the basic research object, the single-stage linear precision AC voltage regulation and filter circuit topology is first proposed. Then on this basis, on the premise of the voltage regulation efficiency, the voltage regulation range is further expanded. A multi-stage linear voltage regulation structure is given, and the distribution law of its efficiency with voltage change is obtained through simulation. While retaining the advantages of the traditional linear amplifier with high waveform quality and no high-frequency noise, it greatly improves system efficiency. Finally, simulations and experiments verify the correctness of this topology and accuracy of the voltage regulation and filtering methods.