Features 1. Strong anti-interference ability, common mode suppression ≥ 50dB, can eliminate power grid clutter, which is a sine wave or method waveform. 2. The output neutral line can be directly grounded to the ground wire, as there is no electrical connection between the output and input. 3. Suppression of harmonics: It has a significant inhibitory effect on the 3rd to 7th harmonics, especially for the third harmonic elimination rate of over 90 [%]. 4. The working components are only transformers and capacitors, and the overall reliability of the machine is particularly high. 5. When the output voltage drops to zero during overload or short circuit, it will automatically limit the current to 1.5-2.5 times the rated value. After the fault is eliminated, it will automatically recover and the stabilized power supply will not be damaged. [2] The output voltage of a constant voltage transformer is only related to the magnetic properties and cross-sectional area of the iron core, and is not related to the ratio of primary to secondary turns. The efficiency, volume, and weight of a constant voltage transformer are similar to those of an ordinary transformer. When the iron core material is good and the mains voltage changes between 160 and 250 volts, the output voltage change is less than 1.5 [%]; When the load current is reduced from full load to half, the output voltage changes by about 1.5-4 [%]. When the output is short circuited, the output current increases by about one time, so it is not afraid of long-term short circuits. A constant voltage transformer is a new type of ferromagnetic resonance voltage regulator with a core structure that includes a saturated magnetic circuit and an unsaturated magnetic circuit. They are separated by a magnetic shunt, which is equivalent to the linear inductance Lg and saturation reactor Lsx of the ferromagnetic resonance voltage regulator