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Custom Transformer and Power Supply
As a professional custom transformer and power supply manufacturer in China, ReliPower delivers engineered solutions built to exacting standards. Every unit undergoes comprehensive testing including 100% power-on testing and burn-in protocols to ensure the products you receive meet safety, performance, and reliability requirements.
Choose The Variable Power Supply Right For You
Our variable power supplies include: Toroidal Transformers, DIN-Rail Power Supplies, LED Power Supplies, Power Adapters, Smart Glass Power, High Power Type, Etc. You can choose the appropriate power supply based on your specific requirements from our product range.
since 2009
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Industrial Machinery & Equipment
Medical Power Solution
EV Charging Solution
LED Power Solution
Building Power Solution
Audio & Sound Power Solution
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Our Certification
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Our Services Always Go The Extra Mile
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Custom Solutions, Dedicated Service All the Way.
High Performance,
High Stability, High Precision.
Fast Sampling &
On-Time Delivery
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Our Footprint Worldwide
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Why Wholesale Toroidal Transformers
in Bulk from us?
Professional Manufacturing
With over 30 years of experience in power supply production, Relipower manages every step in-house — from Injection Molding and PCB processing to final assembly and testing. Each unit follows strict quality standards and international safety certifications for consistent performance.
OEM & ODM Customization
We provide full customization for logo, packaging, dimensions, voltage, and energy efficiency. Whether you’re a retailer, brand owner, or project contractor, our engineers help tailor designs that fit your exact market needs.
High-Flux Magnetic Core
Our high flux toroidal core combined with a unique edge chamfer design in China, providing you with excellent performance and efficiency. This iron core gives it excellent magnetic permeability, which can effectively conduct magnetic flux and reduce energy loss
Energy Efficiency & Safety
Every model is tested under full load to ensure stability, low power consumption, and safe operation. All units include built-in overheat protection, grounding, and temperature control systems.
Global Supply Capability
Relipower supports large-scale production and flexible order volumes with reliable export logistics to North America, Europe, and other major markets. We guarantee stable lead times and secure packaging for international shipping.
Marketing & Technical Support
Beyond manufacturing, our team provides product training, catalog materials, installation guidance, and marketing visuals to help distributors and partners succeed in local markets. We grow with your business, offering continuous after-sales and customization support.
FAQs
FAQs about Power Supply Export
Q1: What is your minimum order quantity (MOQ)?
Q2: How long does it take to get custom samples?
- Design review and quotation: 3-5 business days
- Sample production: 2-3 weeks
Q3: What certifications do your products have?
- UL – North American safety standard
- CE (LVD & EMC) – European compliance
- RoHS – Hazardous substance restrictions
- ISO 9001 – Quality management system
- IEC 60601-1 – Medical device certification (available on request)
Q4: Do you offer free samples?
- Share your technical specifications
- Provide estimated annual volume
- Confirm your company information
Q5: Can you handle both small and large production volumes?
- Small runs: 50-500 units (ideal for prototypes, niche products)
- Medium volumes: 500-5,000 units (typical for specialized equipment)
- Large scale: 5,000-50,000+ units (automated production lines)
Q6: What industries do you serve?
- Medical Devices – Patient monitors, imaging equipment, diagnostic tools
- Audio Equipment – High-end amplifiers, mixing consoles, studio gear
- Industrial Automation – PLCs, motor drives, control systems
- Telecommunications – Base stations, network equipment
- Renewable Energy – Solar inverters, battery systems
- LED Lighting – Commercial and industrial drivers
Q7: What is your warranty policy?
- 5 years for indoor use products
- 3 years for outdoor/industrial use products
- Extended warranties available up to 7 years
- Free replacement for confirmed defects
- Technical support for troubleshooting
- Failure analysis reports
- No return shipping required for small quantities
Q8: How do you ensure product quality?
A: Our 5-stage quality control process:
- IQC – Incoming material inspection (AQL sampling)
- IPQC – In-process quality checkpoints (3 stations)
- 100% Testing – Every unit undergoes power-on testing
- Burn-in – Extended load testing (24-48 hours for critical applications)
- OQC – Final inspection before packaging
We maintain ISO 9001 certification and achieve <100 PPM defect rates. All products are tested for voltage regulation, ripple, efficiency, and safety compliance.
Q9: What is your typical lead time for production orders?
- 50-500 units: 2-3 weeks
- 500-2,000 units: 3-4 weeks
- 2,000+ units: 4-6 weeks
- After sample approval: 4-6 weeks for first production
- Repeat orders: 3-4 weeks
Q10: Can you customize transformers to our exact specifications?
- Input/output voltages (6V to 500V)
- Power ratings (50VA to 3kVA)
- Multiple secondary windings
- Special regulation requirements
- Custom dimensions and form factors
- Mounting configurations
- Wire lengths and connectors
- Enclosure types (open frame, potted, enclosed)
- Ultra-low noise for audio applications
- Medical-grade isolation
- Extended temperature ranges (-40°C to +125°C)
- High altitude operation
Q11: What payment terms do you accept?
A: For new customers:
- First order: 50% deposit, 50% before shipment
- After 2-3 successful orders: 30% deposit, 70% before shipment
- Established partners (6+ months): 30-day payment terms available
Accepted methods: T/T (bank transfer), PayPal (for small orders <$500), L/C (for large orders >$50,000)
Q12: Do you ship internationally?
A: Yes, we ship worldwide via:
- Express: DHL, FedEx, UPS (3-7 days)
- Air Freight: For larger orders (5-10 days)
- Sea Freight: Most economical for bulk orders (20-35 days)
We handle all export documentation, customs declarations, and can arrange door-to-door delivery. Shipping costs are calculated based on weight, volume, and destination.