Custom Toroidal Transformer 30W 300W 1000W 2000W 3000W 5000W For Audio Amplifier

1.Product Description 

The audio ring transformer operates based on the principle of electromagnetic induction, and its core components include a ring core and windings wound on the core. The following is a detailed introduction to its working process:

Primary winding generates magnetic field - Magnetic field conducts in magnetic core - Secondary winding generates induced electromotive force - Signal transmission and isolation - Frequency response and signal fidelity

2.Application

1. High magnetic efficiency
--Magnetic circuit closure: The toroidal transformer uses a toroidal magnetic core to form a closed magnetic circuit. Compared with other shaped magnetic cores, the magnetic flux is concentrated inside the core, with almost no magnetic leakage, which can couple more energy to the secondary winding and improve energy transmission efficiency. For example, in power amplifiers, more electrical energy can be converted into audio signal power output, reducing energy loss.

--Adaptation of high permeability materials: Often paired with materials such as Permalloy or high permeability ferrite to further enhance magnetic properties. Under weak audio signal excitation, it can also generate strong magnetic fields, achieving efficient electromagnetic conversion, suitable for processing low-level audio signals, such as microphone preamplifier circuits.

2. Excellent frequency response
--Full frequency coverage: It can provide a flat frequency response within the audio key frequency band (20Hz-20kHz). Whether it is low pitched low frequencies (such as drum sounds) or crisp high frequencies (such as triangle iron sounds), they can be accurately transmitted and amplified without obvious frequency distortion, ensuring that all frequency components of the audio signal are balanced and presented, bringing users a real and natural audio experience.

--Reduce harmonic distortion: With good frequency response characteristics, each harmonic component of the audio signal can be processed correctly during transmission, without introducing additional harmonic distortion due to transformers, effectively restoring the original waveform of the audio signal and ensuring pure sound quality.

3. Low electromagnetic interference
--Magnetic shielding characteristics: The annular structure itself has a certain magnetic shielding effect, which can effectively confine the magnetic field inside the magnetic core, reduce external electromagnetic radiation, and reduce interference with surrounding circuits and equipment. In audio equipment that requires high electromagnetic compatibility, such as professional recording studio equipment, interference with other audio signal processing circuits can be avoided to ensure recording quality.

--Strong resistance to external interference: The closed magnetic circuit makes the toroidal transformer less susceptible to external magnetic field interference. In complex electromagnetic environments, such as near large motors, transformers, and other equipment, it can still work stably, ensuring that audio signal transmission is not affected by external magnetic fields and maintaining stable sound quality.

4. Low noise operation
--Reduce mechanical vibration: The winding of the toroidal transformer is evenly wound around the toroidal magnetic core, with uniform force distribution and minimal mechanical vibration during operation. Compared to other structural transformers, it can effectively reduce buzzing caused by winding vibration, providing a quiet working environment for audio equipment, especially suitable for high fidelity audio systems that are sensitive to noise.

--Reduce magnetostriction noise: The selected magnetic core material has a small magnetostriction effect. When the magnetic field changes, the noise generated by the magnetic core's own expansion and contraction is low, further ensuring that the audio signal is not affected by noise interference and improving sound quality.