Product Overview

Defon Electronics manufactures toroidal isolating transformers designed to provide complete electrical isolation between primary and secondary circuits, ensuring enhanced safety, signal integrity, and equipment protection.

Using advanced toroidal core technology, these transformers deliver high efficiency, ultra-low noise, and minimal electromagnetic interference compared to traditional isolation transformers.

They are widely used in industrial control systems, medical equipment, laboratory instruments, precision electronics, and sensitive OEM devices requiring clean and isolated power supply.

Our isolating transformers can be fully customized in voltage, power rating, shielding structure, and safety specifications for global industrial applications.

Key Features

  • Full electrical isolation between input and output
  • High-efficiency toroidal core design
  • Ultra-low noise and vibration performance
  • Reduced electromagnetic interference (EMI)
  • High dielectric strength insulation system
  • Low leakage current for sensitive equipment
  • Compact and lightweight structure
  • Stable output under continuous load
  • OEM / ODM customization supported
  • Suitable for high-reliability applications

Applications

Toroidal isolating transformers are widely used in:

Medical Equipment

  • Diagnostic systems
  • Patient monitoring devices
  • Laboratory instruments
  • Imaging equipment

Industrial Control Systems

  • PLC control panels
  • Automation systems
  • CNC machinery
  • Industrial safety systems

Laboratory & Precision Equipment

  • Measurement instruments
  • Calibration systems
  • Research equipment
  • Testing devices

Audio & Sensitive Electronics

  • High-end audio systems
  • Studio equipment
  • Signal processing devices
  • Low-noise power supplies

Commercial & Safety Systems

  • Security systems
  • Communication equipment
  • IT systems
  • Sensitive control modules

Electrical Performance

  • Complete galvanic isolation for safety
  • Stable voltage output under varying load
  • Low electromagnetic interference (EMI)
  • High insulation resistance and dielectric strength
  • Low leakage current design
  • Excellent thermal stability
  • Reliable continuous operation in industrial environments

Customization Options

We support full OEM/ODM customization:

  • Input voltage: 110V / 220V / 230V / 240V / 277V / custom
  • Output voltage: single or multiple isolated outputs
  • Power rating: custom VA range
  • Frequency: 50Hz / 60Hz
  • Insulation class: B / F / H
  • Shielding: electrostatic shielding optional
  • Mounting type: chassis / enclosed / PCB / custom housing
  • Terminal / connector / lead wire design
  • Safety certification: UL / CE / ETL options
  • OEM branding / private labeling

Why Defon Electronics

Defon Electronics is a professional manufacturer of toroidal isolating transformers, specializing in high-safety and low-noise power solutions for global OEM customers.

  • Strong OEM/ODM engineering capability
  • Expertise in isolation transformer design
  • Stable mass production quality control
  • Fast prototype development support
  • Competitive factory pricing
  • Global export experience

We support both prototype development and large-scale production.