What Is Constant Voltage Transformer?

Constant Voltage Transformer(CVT) is a kind of power equipment, which is mainly used to provide a constant output voltage.

The constant voltage transformer integrates voltage stabilization, isolation and voltage transformation. It has a bidirectional filtering function, can eliminate the interference of grid noise, has good anti-interference ability, and outputs two types of sine wave or quasi-square wave. It is an ideal voltage stabilizing power supply for precision electronic instruments, microcomputers and numerical control equipment.

There is a "日"-shaped iron core in the constant voltage transformer, the primary coil is in one window hole, and the secondary coil and the resonant coil are in another window hole. The resonant coil is connected to a resonant circuit with a resonant frequency close to the power supply frequency. When the primary power supply is turned on, the resonant circuit starts to vibrate, making the secondary iron core shallowly saturated, forming a constant alternating magnetic field. Its magnetic induction intensity is within a certain range and is basically not affected by the change of input voltage, so the induced electromotive force of the secondary coil remains unchanged. In this case, the primary input current only serves to supplement energy.

The main features of constant voltage transformers are:

Can achieve high accuracy and stability;
Has strong output capacity to withstand large transient loads;
Adjustable range for a variety of input voltages and load types;
Usually easy to maintain and long life.

The main function of constant voltage transformers is to provide a constant voltage output to meet load requirements. They are usually used in industrial applications that require accurate and reliable power, such as automation equipment, lighting and electrical control systems.