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Designed for medical, audio, and renewable‑energy equipment – perfect for Purchasing Managers and Technical Directors seeking ROI‑driven power solutions.
Get Free Quote in 24 h| Parameter | Typical Value | Unit |
|---|---|---|
| Core Material | Silicon Steel (Fe‑Si 3% | — |
| Power Rating | 10‑500 | W |
| Primary Voltage | 5‑800 | V |
| Efficiency | ≥94 | % |
| Noise Level | ≤38 | dB(A) |
| Operating Temp. | ‑40 ~ +85 | °C |
| Certifications | CE, FCC, RoHS, ISO 9001, VDE, GS, CB | — |
“Xinchangda’s Vaani transformer cut our power‑supply cost by 22% while meeting FDA‑21 CFR Part 820. Delivery was 10 days ahead of schedule.”
“The ultra‑low hum (35 dB) lets our studio‑grade amplifiers stay under the 40 dB limit. No more customer returns.”
Toroidal-Transformer toroidal-transformer-design bi-toroid-transformer toroidal-transformer-12v







Standard stock units ship within 5 business days. For OEM/ODM projects with engineering approval, the average production lead time is 12‑14 weeks, but our high‑speed line can reduce it to 8 weeks for orders >10 k units.
Yes. We provide UL 1446, IEC 60214‑1, and CSA certifications on request. Our factory holds ISO 9001 and CE, and we partner with accredited labs for UL testing.
We can tailor primary/secondary voltage (5‑800 V), power rating (10‑500 W), core diameter (30‑120 mm), winding wire gauge, and apply special enamel or foil for high‑frequency use. Our R&D team assists with schematic validation.
Every batch undergoes 100% automated winding inspection, insulation resistance test, and acoustic noise measurement. We issue a full test report (including IEC 61869‑2 compliance) and retain samples for 12 months.
We accept T/T, LC, and PayPal for small orders. For orders >$50 k, we offer 30 % upfront, 70 % before shipment. Freight can be DAP (Delivered at Place) to any US port; air‑freight options are available for urgent samples.
Limited‑time offer: Free engineering sample (up to 100 W) for the first 10 US inquiries.

No‑risk: 30‑day money‑back guarantee on all first‑order defects.
Mark T., Operations Manager, GreenPower Solar (USA) – “The Vaani transformer’s 95% efficiency lowered our inverter heat loss by 18%, saving us $12k annually.”
Sarah L., Head of Procurement, MedEquip Co. – “CE and UL certifications arrived with the first shipment – zero paperwork delays.”
David K., CTO, SoundWave Pro Audio – “Noise dropped from 55 dB to 36 dB after switching to Vaani toroidal; our customers noticed the difference instantly.”