Low Frequency Step Down Transformer EI28 1VA 220V 12V Power Transformer Silicon Steel
1.Product Description
The **Low Frequency Step Down Transformer EI28 1VA 220V 12V** is a compact power transformer designed for low-frequency applications, featuring a high-quality silicon steel core that ensures efficient voltage conversion with minimal energy loss. With a primary voltage rating of 220V and a secondary output of 12V at 1VA capacity, this EI28-sized transformer is ideal for small-scale power supply needs in electronics, control circuits, and low-power devices. Its robust construction and reliable performance make it suitable for various industrial and consumer applications requiring stable voltage step-down functionality.
1. Efficient and energy-saving design
Adopting Z11 high magnetic conductivity silicon steel core, it has low hysteresis loss and low eddy current loss characteristics, low no-load current, high energy conversion efficiency, and effectively reduces operating energy consumption.
2. Accurate voltage conversion
Input 220V AC power is stably converted to 12V low-voltage output with high conversion accuracy (within ± 5%). The 1VA power design is particularly suitable for small current control circuits and signal processing applications.
3. Excellent temperature rise control
Optimize the winding structure in conjunction with EI28 laminated design, with a working temperature rise of ≤ 40K (ambient temperature+40 ℃), allowing for continuous operation without exceeding the temperature limit and extending the service life.
4. Strong anti-interference ability
The multi-layer shielding winding structure effectively suppresses electromagnetic interference (EMI) and produces pure output waveforms, making it suitable for precision instruments and automation control systems that require high power quality.
5. Industrial grade reliability
Full copper wire winding+vacuum impregnation process, moisture-proof and shockproof, in compliance with IEC61558 safety standards, MTBF＞100, 000 hours, suitable for a wide temperature range of -25 ℃ to+130 ℃.
2.Performance Characteristics
| Parameter | Specification/Feature |
| Model | EI28 Low Frequency Step-Down Transformer |
| Core Material | Z11 High-Grade Silicon Steel Sheet |
| Input Voltage | 220V AC ±10% |
| Output Voltage | 12V AC ±5% |
| Rated Power | 1VA |
| Frequency | 50/60Hz |
| Efficiency | ≥85% (Typical) |
| No-Load Current | ≤8mA |
| Temperature Rise | ≤40K at full load |
| Insulation Class | Class B (130°C) |
| Winding Material | 100% Copper |
| Insulation | Vacuum impregnated varnish |
| EMI Performance | Excellent noise suppression |
| Safety Standards | Complies with IEC 61558 |
| Operating Temp. | -25°C to +130°C |
| Storage Temp. | -40°C to +150°C |
| Humidity Resistance | 95% RH non-condensing |
| MTBF | >100,000 hours |
| Applications | Industrial control systems, security devices, household appliances, PLC power supply |
3.Other Recommended Produtcs
4.Company Profile
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Low Frequency Step Down Transformer EI28 1VA 220V 12V Power Transformer Silicon Steel Images
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