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Power your critical systems with the ei28 transformer – engineered for low loss, tight tolerance, and rapid delivery. Ideal for corporate purchasing managers, technical directors, and operations leaders who demand ROI‑driven performance.
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1. High Purchase Price – Conventional transformers from third‑party distributors often carry a 20‑30 % premium due to limited production capacity.
2. Inconsistent Quality – Voltage regulation drift and excessive heat lead to unplanned downtime, costing manufacturers up to 15 % of annual OPEX.
3. Long Lead Times – Overseas sourcing can add 6‑8 weeks, jeopardizing project schedules.
4. Compliance Uncertainty – Missing CE, RoHS, or FCC certifications forces costly redesigns.
5. Limited Customization – Off‑the‑shelf parts rarely match the exact impedance or winding ratio required for high‑fidelity audio or medical equipment.
| Parameter | Value | Unit |
|---|---|---|
| Power Rating | 28 | VA |
| Primary Voltage | 120 / 230 | V |
| Secondary Voltage | 12 / 24 / 48 | V |
| Efficiency | >96 | % |
| Regulation | ±0.5 | % |
| Operating Temp. | -40 ~ +85 | °C |
| Certifications | CE, RoHS, FCC, ISO 9001 | - |
• Audio Amplifier Chains – 30 % reduction in harmonic distortion for a leading US speaker‑system OEM.
• Medical Imaging Equipment – Certified for Class II devices, delivering stable 12 V rails with zero drift over 10 k‑hour operation.
• Renewable Energy Inverters – Integrated into 5 kW solar inverters, improving overall system efficiency by 2.4 %.
• Industrial Automation – Used in PLC power modules, cutting unplanned shutdowns by 18 % in a factory automation line.
Q1: How do I place a bulk order for the ei28 transformer?
A: Send an inquiry to grace01@xinchangdadz.com with quantity, voltage spec, and delivery address. Our sales team will issue a pro‑forma within 2 hours.
Q2: Can the ei28 be customized for non‑standard winding ratios?
A: Yes. Our R&D team offers OEM/ODM design. Minimum MOQs start at 1,000 pcs for custom specs.
Q3: What are the payment terms for US buyers?
A: We accept T/T (30 % deposit, 70 % before shipment), L/C at sight, or PayPal for orders under $5,000.
Q4: How long does shipping to the United States take?
A: Standard air freight reaches major US ports in 5‑7 business days. Express courier (DHL/UPS) can deliver within 3 days.
Q5: What warranty and after‑sales support are provided?
A: 24‑month limited warranty covering manufacturing defects. Our 24/7 technical hotline (+86 131‑2825‑6415) assists with troubleshooting and replacement logistics.
Q6: Are the transformers compliant with FDA and IEC standards?
A: Yes. All ei28 units carry CE, RoHS, FCC, and IEC 60601‑1 (for medical) certifications, with test reports available on request.
Limited‑time offer: First‑order sample (up to 10 pcs) shipped free of charge. No hidden fees, no commitment.
Request Free SampleOr call us now: +86 131‑2825‑6415 (We answer 24/7)
Emily R., Purchasing Lead – SoundWave Ltd.
“The ei28 transformer delivered exactly the specs we needed. Cost saved: $12,000 on a $45,000 order. Delivery was on‑time, and the quality exceeded expectations.”
Samuel K., Technical Director – BioHealth Instruments
“Our FDA audit highlighted the transformer’s compliance documentation. The OEM design service saved us weeks of engineering time.”
Rachel L., Supply Chain Manager – SolarEdge USA
“Fast shipping and a responsive support team made the ei28 the go‑to choice for our new inverter line. We’ve placed three repeat orders already.”
Michael Chen, Senior Magnetic‑Component Engineer – With 18 years in transformer design, Michael has led R&D projects for Fortune‑500 audio and medical manufacturers. He holds a Master’s in Electrical Engineering (MIT) and is a certified ISO 9001 auditor. Michael writes regularly for Power Electronics Review and consults on OEM/ODM strategies for global supply chains.
Contact: grace01@xinchangdadz.com | Phone: +86 131‑2825‑6415
