The Role Of Constant Voltage Transformer

Constant Voltage Transformer(CVT) integrates voltage stabilization, isolation, and voltage transformation. It has a bidirectional filtering function, can eliminate grid noise interference, and output a stable voltage. The following is a detailed explanation:

‌Voltage stabilization function‌:

The constant voltage transformer can automatically adjust the output voltage to ensure the stability of the output voltage, and is suitable for applications with high voltage stability requirements.

It is based on the principle of ferromagnetic resonance and uses a specific design (such as a "sun"-shaped iron core and a resonant circuit) to achieve voltage stabilization, so that the induced electromotive force of the secondary coil remains unchanged.
‌Isolation function‌:

The constant voltage transformer has an isolation function, which can ensure the safe isolation of the voltage. When the primary or secondary side of the transformer is abnormal, it will not affect the normal power consumption of the other side.

Its output neutral line can be directly connected to the earth ground wire, because there is no electrical connection between the output and the input, which enhances safety. 3.
‌Voltage transformation function‌:

As a type of transformer, the constant voltage transformer certainly has a voltage transformation function, which can transform the voltage to meet the power consumption needs of different electrical appliances.
Filtering function:

The constant voltage transformer has a bidirectional filtering function, which can eliminate the interference of clutter in the power grid, has good anti-interference ability, and outputs two types of sine wave or quasi-square wave.

It has a significant inhibitory effect on 3rd to 7th harmonics, especially the elimination rate of third harmonic is more than 90%.

Protective function:

When the constant voltage transformer is overloaded or short-circuited, the output voltage will drop to zero and automatically limit the current. After the fault is eliminated, it can automatically recover to protect the voltage-stabilized power supply from damage.

In summary, the constant voltage transformer has a wide range of application value in electrical equipment, especially in areas where the power grid voltage changes greatly. It can withstand a wide range of changes and output constant, providing an ideal voltage-stabilized power supply for precision electronic instruments, microcomputers, CNC and other equipment.