Customized EI66 Low Frequency Power Supply Transformers Square Inverter 110V 220V

1.Product Description

EI66 power supply transformers are compact, cost-effective laminated transformers commonly used in low-power electronic applications. The "EI" designation refers to their stacked E-shaped and I-shaped iron core laminations, which reduce eddy current losses, while "66" indicates the core's approximate 66mm width. These transformers typically operate at 50/60Hz frequencies with power ratings ranging from 5VA to 50VA, offering reliable voltage conversion for circuits requiring isolation or step-up/step-down functionality. Their robust construction features enameled copper windings and varnish-impregnated cores for noise reduction. EI66 transformers are widely employed in power adapters, audio equipment, control systems, and small appliances due to their simple design, high efficiency (typically 85%-92%), and easy manufacturability. Proper selection requires consideration of input/output voltage, load current, regulation, and temperature rise specifications.

Here are three key features of Customized EI66 Low Frequency Power Supply Transformers / Square Inverter Power Transformers:

1. High Efficiency & Low Losses

   • Optimized EI-66 laminated silicon steel core minimizes eddy current and hysteresis losses, achieving 85%-93% efficiency even under low-frequency (50Hz/60Hz) operation.

2. Robust Square Wave Compatibility

   • Specially designed to handle non-sinusoidal (square wave) inverter loads without saturation, ensuring stable voltage output under harsh power conditions.

3. Flexible Customization

   • Supports tailored designs for input/output voltages, multi-tap windings, shielded layers (EMI suppression), and potted construction for harsh environments (e.g., industrial/UPS applications).

2.Performance Characteristics

3.Other Recommended Produtcs

4.Company Profile

Shenzhen Zhixiangyuan Electronics Co.,Ltd is a high tech enterprise, specializing in customizing various types of audio transformers, high frequency transformers, low frequency transformers，switching power transformers, toroidal inductors, choke coils, SMD power inductors, supper high current inductors and wireless charging coils ,etc for customers.

Founded in 2011,our factory have two production bases in Huizhou city,Guangdong province and Guang’an city,Sichuan province which can produce 120 million inductors and transformers that meet the environmental Protection requirements of ISO every year. Our company equips with fully automatic winding,soldering,assembling,testing machines,also some reliability test equipments.

Our products are certified by UL，FCC，CE，RoHS、Reach and granted with 20 patents.These achievements mainly come from our strong R and D team,providing solutions for temperature decreasing noise cancellation and coupled radiation conductivity.

The products are widely used in high quality audio equipments, audio conference room equipments，communication, medical electronic equipments, automotive electronics, sports and fitness equipments, beauty equipments，LED lighting，and consumer electronics etc.

We are committed to providing high quality coils, inductors, transformers and other products. We can also accept OEM and ODM orders. We sincerely welcome customers at domestic and oversea to visit and cooperate with us with high-quality products, preferential prices and excellent reputation.