Product Introduction

An AC isolation transformer is a safety power supply device that achieves electrical (galvanic) isolation between the input voltage and the output voltage through electromagnetic induction. Its core value lies in providing a clean and safe power environment for precision electronic equipment, medical instruments, and industrial control systems. Its primary function is isolation rather than voltage transformation. Toroidal isolation transformers are mainly used in applications such as audio power amplifiers, Hi-Fi power supplies, medical equipment, and other precision instruments.

Product Features

• Minimal stray magnetic field: Owing to the closed magnetic circuit topology of the toroidal transformer core, leakage flux is virtually eliminated. Consequently, external electromagnetic interference is extremely low, and the transformer exhibits high immunity to external magnetic field disturbances.

• Low no-load loss and high efficiency: As the magnetic circuit contains no air gap, excitation losses are minimized. The no-load current is significantly lower than that of conventional EI-type transformers, yielding superior conversion efficiency and reduced thermal dissipation.

• Extremely low acoustic noise: Due to the absence of magnetostrictive vibration inherent to laminated stacked cores, there is virtually no audible line-frequency hum, ensuring silent operation.

Application Fields

Toroidal AC isolation transformers are mainly used in:

Audio Power Amplifiers

Hi-Fi Power Supplies

Medical Equipment

Instruments and Meters

FAQ

Q: What are the advantages and disadvantages of toroidal isolation transformers?

A: Advantages: 1. High efficiency: usually above 90%. 2. Low magnetic leakage, strong anti-interference ability. 3. Low operating noise. 4. Smaller size than EI type at the same power.

Disadvantages: 1. Poor anti-saturation capability. 2. Relatively high cost.