High-frequency transformers
- Flyback, forward and LLC designs from 1 to 150 W
- Cores EE10–EE25, EF20, RM6, RM8, PQ20 and EP13
- Built with UL-recognised magnet wire, triple-insulated wire, bobbins and tapes
- Through-hole and flying-lead versions
Custom transformers and inductors for power supplies
High-frequency magnetics from 1 to 150 W, wound and tested in GaoChangSheng's factories in China. Samples in 3–5 days. Production orders from 500 to 20,000 pieces.
- 4 sites
- Production in Shenzhen, Dongguan, Hengyang and Ruijin
- 1.95 million
- Pieces per day, combined capacity
- 3–5 days
- For custom samples
- UL E513119
- Insulation system Class 130 (B), recognised for the US and Canada
What we make
Every part is built to your specification: your circuit, your safety requirements, your footprint. Send a drawing, a datasheet, or the part number you use today and we will propose an equivalent.
Inductors and chokes
- Common mode chokes for EMI filtering
- Toroidal power inductors
- Drum core inductors
- Wound to your inductance, current and size requirements
- Order quantity
- 500–20,000 pcs
- Custom samples
- 3–5 days
- Quotation
- Within 2 working days
- Power range
- 1–150 W
Typical applications: chargers and adapters, LED drivers, home appliances and BLDC motor drives, smart building controls and industrial power supplies.
Made in GaoChangSheng's own factories
GaoChangSheng has manufactured magnetic components since 2010. Winding runs on automatic and multi-spindle machines across four sites in China.
| Site | Staff | Pieces per day |
|---|---|---|
| ShenzhenHeadquarters, since 2010 | 242 | 700,000 |
| RuijinSince 2021 | 98 | 680,000 |
| DongguanSince 2020 | 80 | 400,000 |
| HengyangSince 2018 | 80 | 170,000 |
| Total | 500 | 1,950,000 |
Tested before it ships
Finished transformers run through automatic test lines. Robot handlers load the parts into hi-pot and transformer testers that check insulation strength, winding resistance and inductance.
- UL-recognised insulation system GCS130Class 130 (B), UL File E513119, recognised for the US (OBJY2) and Canada (OBJY8) under UL 1446 and CSA C22.2 No. 0-10. Search E513119 in UL Product iQ to check the current listing.
- UL-recognised materialsMagnet wire, triple-insulated wire, bobbin resins, tapes, varnish and sleeving.
- Documents on requestTest reports, material declarations and quality certificates are available for your supplier approval.
- Factory audits welcomeVisit or audit the GaoChangSheng plant in Shenzhen before you order.
Who you work with
Two companies, each with a clear job. You get the manufacturer's engineering and capacity, and one partner for quotes, contracts and export.
Manufacturer
Shenzhen GaoChangSheng Electronic Tech. Co., Ltd. (GCS)
Designs and manufactures the parts at its own plants in Shenzhen, Dongguan, Hengyang and Ruijin. Factory audits take place at GCS.
International sales and contracting
Heyuanhang (Huizhou) Trading Co., Ltd. (HYH)
GCS's authorised international sales partner. HYH prepares quotations, signs contracts, invoices and arranges export shipping for customers outside China. Payments go to HYH's company account, as stated on every proforma invoice.
Request a quote
Fill in what you know; blank fields are fine. The button opens your own email app with these details filled in, addressed to bill@hyh-global.com. Attach your drawing or datasheet there before you send.
Prefer to write directly? Email bill@hyh-global.com or call +86 159 1936 7961. We reply within one working day, China time (UTC+8).