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AMADA (THAILAND) CO., LTD.
PRODUCT
Production Goods
Single-Phase AC Welding Power Supply | Basic Power Source for Resistance Welding
Key Takeaways
• Simple structure with high durability and cost efficiency
• Ideal for resistance welding of ferrous materials
• Current control using a toroidal coil enhances stability
• Supports multiple current control modes and international standards
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AC welding power supplies feature a simple, durable design and easy maintenance, making them widely used in industrial welding. They are especially suitable for resistance welding of ferrous materials that are relatively easy to weld.
🔷 Product Overview
AMADA’s AC welding power supply is designed for precision resistance welding. It enables stable current control for small components and is suitable for production lines and overseas markets.
🔷 Product Mechanism (How it works)
AC current is controlled in half-cycle or multi-cycle units, with current detected by a toroidal coil. This maintains stable welding current while compensating for power supply fluctuations and load changes.
🔷 Product Features
1. Current Control Modes
• Secondary-side constant current control (multi-cycle energization)
Current feedback via toroidal coil with half-cycle control
• Power supply voltage compensation control (multi-cycle energization)
Compensates from each half-cycle to maintain constant current during voltage fluctuations
2. Automatic Maximum Current Setting
Optimal maximum current is set through energization tests to maximize performance
3. Toroidal Coil Current Monitoring
Upper and lower limits can be set to support weld quality management
4. Export Compliance
Supports CE marking, CCC certification, and 480V specifications for the U.S. market
🔷 Use Case
Suitable for resistance welding of steel materials, small-part welding, processes requiring precise current control, and mass-production lines demanding stable quality.
📘 Summary
The AC welding power supply combines simplicity, durability, and precise current control, making it ideal for resistance welding of small metal parts.
For more details, please contact our sales team.
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❓ FAQ
Q1: What applications is it suitable for?
A1: Resistance welding of steel materials and high-precision welding of small parts.
Q2: How is current stability ensured?
A2: Through toroidal coil feedback that compensates for power supply and load fluctuations.
Q3: Is it suitable for overseas markets?
A3: Yes. It supports CE, CCC, and 480V specifications for the U.S. market.
📚 Glossary (Key Terms)
• AC welding power supply: A single-phase AC power source for industrial welding
• Precision resistance welding: Resistance welding requiring high-accuracy control
• Toroidal coil: A coil used to detect welding current
📖 Reference
Amada Micro Welding Machine & Welding Power Supply
Product Overview & Technical Description – AMADA (N/A) (Internal Validation)
🔒 Trust
The technical information in this article is based on AMADA documentation and has been verified by Mr. Kazutaka Suehiro.
#ACWeldingPowerSupply #ResistanceWelding #PrecisionWelding #IndustrialWelding
#MetalProcessing #WeldingTechnology #QualityControl
📆 Updated: 2026-01-19
Company Information
Industry Classification
Industrial machinery
Main 3 Products
Sheet Metal Fabrication Machines / Metal Cutting Machines / Micro Welding Systems
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Since our founding in 1946, the AMADA Group has continuously created and risen to challenges as a manufacturer of metalworking machinery and supported global manufacturing. With “Growing Together with ...
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