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AMADA (THAILAND) CO., LTD.
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AC Inverter Welding Power Supply | Suppresses Peltier Effect, Ideal for Fusing Applications
Key Takeaways
• Compatible with existing AC welding transformers
• Inverter control improves stability and thermal efficiency
• Suppresses the Peltier effect and magnetization of magnetic materials
• High-precision current control ideal for fusing and dissimilar metal welding
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The AC inverter welding power supply is a core component of industrial resistance welding systems. It provides stable thermal energy control while enabling effective reuse of existing AC equipment.
🔷 Operating Principle of the AC Inverter System
• Precise control of AC waveforms
• Uniform heat delivery to the weld area
• Reuse of existing AC transformers and welding heads
🔷 Weld Quality and Thermal Stability
• AC operation reduces the Peltier effect
• Uniform heat distribution at the electrodes
• Suppresses uneven electrode wear
• Forms stable molten zones
• Reduces surface coating damage during fusing
🔷 High-Precision Welding Current Control
• Added secondary-side constant current control
• Real-time monitoring of actual welding current
• Supports multi-stage current settings from 1 to 3 steps
• Pulsation function enables fine control of melt volume
🔷 Auxiliary Functions for Process Stability
• Interrupt function supported throughout all energization phases
• Prevents excessive melting
• Up-slope and down-slope settings available for all three stages
🔷 Industrial Applications
• Fusing processes
• Spot welding
• Dissimilar metal welding
• Production lines requiring high weld quality
• Effective reuse of existing equipment
📘 Summary
The AC inverter welding power supply delivers precise current control and stable thermal performance, offering high compatibility with existing AC systems for industrial welding applications.
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❓ FAQ
Q1: Is it compatible with existing equipment?
A1: Yes. Existing AC transformers and welding heads used in resistance welding can be reused.
Q2: What welding applications is it suitable for?
A2: Fusing, spot welding, and dissimilar metal welding.
Q3: What is the advantage of secondary-side current control?
A3: Monitoring actual current enables high control accuracy and stability.
📚 Glossary (Key Terms)
• Inverter: A device that precisely controls electrical current waveforms (details not specified)
• Peltier effect: A phenomenon affecting heat distribution in dissimilar metal welding
• Secondary-side constant current control: A control method based on actual 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 technical documentation and has been verified by Mr. Kazutaka Suehiro.
📆 Updated: 2026-01-19
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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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