Custom EI Transformer

Product Overview

Defon Electronics specializes in custom EI transformers ranging from 5VA to 1200VA, engineered for stable performance, high efficiency, and long service life. Our EI laminated transformer series is widely used in industrial equipment, lighting systems, control systems, medical devices, and consumer electronics.

With strong in-house engineering capability, we provide fully customized transformer solutions, including voltage input/output, power rating, insulation class, mounting structure, and safety certification requirements.

Whether you need a small 5VA signal transformer or a 1200VA high-power industrial transformer, Defon delivers consistent quality and reliable electrical performance.

Key Features

Power range: 5VA to 1200VA
High-quality EI laminated silicon steel core
Custom primary & secondary voltage design
Low no-load loss and high efficiency
Strong insulation and safety performance
Multiple mounting options (PCB, chassis, open frame, enclosed type)
Copper winding with high thermal stability
Designed for long continuous operation
RoHS compliant materials available
OEM / ODM customization supported

Customization Options

We support full customization based on project requirements:

Input voltage (110V / 220V / 230V / 277V / etc.)
Output voltage (single or multiple outputs)
Power rating (5VA–1200VA)
Frequency (50Hz / 60Hz)
Temperature class (Class B / F / H)
Insulation level & safety standard requirements
Lead wire / terminal / PCB pin design
Enclosure design or open frame structure

Applications

Our EI transformers are widely used in:

Industrial Equipment

Automation control systems
PLC systems
Machine tools
Power distribution modules

Lighting Systems

LED drivers
Landscape lighting
Architectural lighting systems
Low voltage lighting control

Consumer Electronics

Audio equipment
Home appliances
Chargers and adapters
Smart devices

Commercial & Infrastructure

Security systems
Access control systems
Communication equipment
HVAC control systems

Medical & Laboratory Equipment

Diagnostic devices
Testing instruments
Laboratory power systems

Electrical Performance

Stable voltage conversion with minimal fluctuation
Low temperature rise under rated load
High dielectric strength for safety protection
Low noise and vibration design available upon request
Long lifecycle for continuous operation environments

Why Choose Defon Electronics

Defon Electronics is a professional manufacturer of custom EI transformers and low-voltage power solutions. We focus on engineering-driven design and strict quality control to ensure stable performance in demanding applications.