Isolation transformers are used to provide electrical isolation between two circuits. They have a primary winding and a secondary winding that are electrically separated, which means there is no direct electrical connection between the two windings.

An isolation transformer is a type of transformer that is used to transfer electrical power from one circuit to another while separating the two circuits electrically, preventing direct contact between them. The primary and secondary windings of an isolation transformer are physically separated by insulation, which provides complete galvanic isolation between the two circuits. This isolation prevents electrical noise, voltage surges, and other disturbances from passing between the circuits, making it a critical element in several applications.

The audio transformer can realize voltage-converter conversion just like the power transformer, and can also realize audio signal coupling. There are four main functions of audio transformer:Output transformer: used in audio equipment and playback equipment, impedance conversion in the circuit.

Isolation transformer belongs to the safety power supply, generally used for machine repair, maintenance, protection, lightning protection, filtering function. The principle of isolation transformer is the same as that of ordinary transformer. They all use the principle of electromagnetic induction. Isolation transformers generally (but not all) refer to 1:1 transformers.

the structure of the power transformer:(1) Rectifier；(2) Filter；(3) Inverter；(4) Power factor correction:

A power transformer is a static machine used for transforming power from one circuit to another without changing the frequency. As there is no rotating or moving parts, a transformer is classified as a static device. Transformer operates on an AC supply. Transformers operate based on the principle of mutual induction.

In the power system, the role of the current transformer is to change the large current into the small current, isolate the secondary loop connected to the relay and measuring instrument from the high voltage system of the primary current, and convert the primary current to the secondary current value of 5A or 1A standards.