Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are primary coil, secondary coil, and iron core (magnetic core). The main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc.

Isolation transformers are used to transfer power from an AC power source to a specific device. Here, the power equipment is separated from the power supply, while also considering safety measures. In addition, it can also block capacitors, allowing the primary winding and secondary winding to be linked together. Transformers increase the energy voltage level from one winding to another by inducing electrical energy from one winding to another. Isolation transformers promote current isolation, prevent power transmission between circuits, and suppress electrical noise. Isolation transformers are designed to resist interference from grounding circuits and reduce capacitive coupling in windings. The transformer uses unconnected spools on the coil winding. In all cases, they are protected by electrostatic shielding, which is located between the windings and used to power sensitive equipment such as laboratory equipment, computers, and other electronic devices.

(1) Transformer and voltage regulation: The main function of a transformer is to convert AC voltage from one level to another through electromagnetic induction. They can convert high voltage to low voltage or convert low voltage to high voltage to meet the needs of different devices. For example, converting 220V mains power into low voltages such as 12V and 24V suitable for electronic devices.

(2) Electrical isolation: Transformers provide electrical isolation in the circuit, ensuring that there is no direct current path between the primary and secondary windings. This isolation helps protect people and equipment, preventing dangerous situations such as electric shock and short circuit.

(3) Safety guarantee: By providing electrical isolation, transformers reduce the risk of electric shock. Especially in power transformers, they are designed to ensure safe isolation between people and equipment, avoiding direct contact with high-voltage power sources. For example, in ship power systems, transformers can isolate power lines from electrical equipment, thereby improving safety.

(4) Noise suppression: Transformers can also reduce noise and other unwanted sound interference in circuits. They prevent the audio amplifier signal from being directly connected to the speaker output, thereby reducing noise issues caused by direct signal coupling.

(5) Signal isolation and DC isolation: In some applications, transformers are used to isolate DC power sources to prevent DC components from affecting signal transmission. For example, in telephone lines, transformers are commonly used to isolate DC power sources and signals, ensuring clear and stable signal transmission, while protecting equipment such as amplifiers from DC current interference.