The basic principle of this frequency and voltage stabilization power supply is LC series resonance, and the early magnetic saturation voltage regulators for such power supplies belong to this category. Its advantages include a simple structure, few components, high reliability, wide voltage stabilization range, and strong resistance to interference and overload. However, it has drawbacks such as high energy consumption, loud noise, heavy weight, and high cost.400 Hz power supply
Parametric voltage regulators developed based on the magnetic saturation principle, along with the "magnetic amplifier-regulated electronic AC voltage regulators" popular in China during the 1950s (i.e., the Type 614), are AC voltage regulators that belong to this principle.
