This air-cooled MAO power supply provides stable dual-pulse output with wide voltage and current ranges, suitable for laboratory and industrial micro-arc oxidation applications.
GAOHUI’s 50A 750V / 15A 300V Air-Cooled MAO Dual-Pulse Rectifier is a high-performance specialized power source for forming ceramic coatings on aluminum, magnesium, titanium and their alloys. In particular, it adopts advanced high‑frequency pulsed electric field technology to produce dense, high‑hardness coatings with great corrosion resistance and insulation.
Furthermore, the power supply supports full customization, with adjustable 0–1000A current, 0–750V voltage and intelligent digital control. Thanks to this flexibility, it can easily match various process requirements for different applications.
Meanwhile, it ensures excellent treatment efficiency while saving energy. As a result, it has become the top choice for industrial production and laboratory R&D in aerospace, medical, and deep‑sea technology fields.
For industry standards and professional guidance,you can refer to the Water Environment Federation and International Society of Electrochemistry.
Generally speaking, choosing the right Air-Cooled MAO Dual-Pulse Rectifier directly affects process stability and production efficiency. To achieve ideal results, you should focus on three core requirements during selection.
First and foremost, you must ensure the power supply fits your MAO process parameters. It should support proper output capacity, single or dual pulse waveform, and wide adjustable current and voltage ranges. In doing so, you can keep coating quality consistent and reliable.
Equally important, pay attention to structural design, circuit stability, cooling system and safety protections. High-quality units come with complete protection functions and three-proofing treatment. What’s more, they adapt well to harsh industrial environments and support stable long-term operation.
Last but not least, consider overall cost-performance after meeting process and reliability demands. You can evaluate after-sales support, maintenance ease and energy consumption level. In this way, you will lower long-term project operating costs effectively.
Our industrial-grade Air-Cooled MAO Dual-Pulse Rectifier comes with an exceptionally flexible specification range of 0–1000A current and 750V voltage. In addition, it features a modular and intelligent design, which enables it to fully support customized solutions for precision requirements across diverse application scenarios. Below are the key parameters that highlight its strong customizability:
First and foremost, Input Voltage: AC 380V ±10%, 50Hz; industrial standard input with strong anti-interference capability.
When it comes to working modes, Operating Mode: Switchable constant current/constant voltage mode, fully adjustable based on your specific process needs.
As for output performance, Output Waveform: Standard single-pulse; customizable dual-pulse is available; positive and negative parameters can be adjusted independently for personalized use.
To better fit different materials, Output Frequency: 100–3000Hz, fully customizable to match various metal oxidation processes perfectly.
For accurate and fine control, Duty Cycle: 5–100% stepless adjustable, supporting precise control of discharge time as you need.
In terms of smart functions, Intelligent Operation: Supports single/multi-segment running, stores 50 process recipes, and records historical data and fault logs for flexible process switching.
Even under harsh working conditions, Environmental Adaptability: Professional three-proofing treatment, ensuring stable long-term full-load operation.
To guarantee safe operation, Comprehensive Protection: Overcurrent, overheating, overvoltage, and phase loss protection functions.
For easier control experience, Human-Machine Interaction: Equipped with RS485 remote control, real-time status indicators, and emergency stop button.
Last but not least, Timing & Alarm: Customizable timer; automatic abnormal alarm to effectively reduce production losses.
Over all, GAOHUI provides complete single-pulse and dual-pulse models with air-cooled and water-cooled options. Accordingly, these units fit different production scales and process requirements.
| Single-Pulse Micro-Arc Oxidation Power Supply Model Table | ||||
| Serial Number | Forward Current | Forward Voltage | Cooling Method | Size (mm) |
| 1 | 5A | 750V | Air-cooled | 198*250*430 |
| 2 | 10A | 750V | Air-cooled | 510*560*230 |
| 3 | 30A | 750V | Air-cooled | 510*560*460 |
| 4 | 50A | 750V | Air-cooled | 510*560*460 |
| 5 | 100A | 750V | Air-cooled | 580*650*1623 |
| 6 | 200A | 750V | Water-cooled | 1155*650*903.5 |
| 7 | 300A | 750V | Water-cooled | 1155*650*903.5 |
| 8 | 500A | 750V | Water-cooled | 1155*650*1473.5 |
| Dual-Pulse Micro-Arc Oxidation Power Supply Model Table | ||||||
| Serial Number | Forward Current | Forward Voltage | Reverse Current | Reverse Voltage | Cooling Method | Size (mm) |
| 1 | 10A | 750V | 3A | 300V | Air-cooled | 510*560*460 |
| 2 | 30A | 750V | 10A | 300V | Air-cooled | 510*580*681 |
| 3 | 50A | 750V | 15A | 300V | Air-cooled | 510*580*1156 |
| 4 | 100A | 750V | 30A | 300V | Air-cooled | 580*650*1623 |
| 5 | 200A | 750V | 50A | 300V | Water-cooled | 1155*650*903.5 |
| 6 | 300A | 750V | 100A | 300V | Water-cooled | 1155*650*903.5 |
| 7 | 500A | 750V | 150A | 300V | Water-cooled | 1155*650*1473.5 |
Specifically for research, we design a compact experimental MAO power system for institutes and labs. It integrates intelligent temperature control and modular reaction components. Besides, the unit supports up to 750V adjustable output with fast parameter switching and lab-level precision. As expected, it works perfectly for ceramic coating preparation, material testing and MAO process development. Thanks to its design, it saves lab space and simplifies operation, making it a great choice for materials science research.
By adjusting parameters, you can achieve diverse ceramic coating colors. Our power supply supports multiple color finishes for different alloys to meet both aesthetic and functional needs. For instance, common colors include black, white, blue, yellow, green, purple, champagne and bronze.
| Color | Aluminum Alloy | Magnesium Alloy | Titanium Alloy |
| Black | ✔ | ✔ | ✔ |
| White | ✔ | ✔ | ✔ |
| Blue | ✔ | - | ✔ |
| Obsidian Blue | - | - | ✔ |
| Clear Blue | - | - | ✔ |
| Yellow | ✔ | ✔ | ✔ |
| Champagne | - | ✔ | - |
| Bronze | - | ✔ | ✔ |
| Green | - | - | ✔ |
| Purple | ✔ | - | - |
Across multiple industries, our rectifier delivers high-performance surface treatment. Specifically, it is widely used in alloy ceramic coating, functional anodic oxide film, chemical conversion film treatment, and military special plating. Therefore, it provides stable power support for automotive, aerospace, medical, marine and electronic fields.
Above all, we independently develop a high-performance digital control system tailored for micro-arc oxidation. Through this proprietary system, it outputs multi-stage composite waveforms and adjusts parameters with high precision. As a result, it can be fully customized to match all kinds of MAO processes perfectly.
In addition, we provide a full selection of models with 0–1000A current and 750V voltage. Furthermore, both single/dual pulse and air/water cooling solutions are available. Together, these options support flexible customization to cover all industrial production and laboratory research demands.
Moreover, all our units adopt three-proofing design and complete protection functions. Even with customized configurations, they still run stably for a long time with extremely low failure rates. Before delivery, every product passes strict multi-dimensional performance tests to ensure customized quality.
Besides, the user-friendly touchscreen supports one-click recipe storage and quick recall. At the same time, it displays real-time and historical data and supports RS485 remote control. Therefore, customized parameter setup becomes simple, and production management turns more efficient.
Most notably, our professional technical team focuses on personalized solutions. According to your process requirements, production scale and application scenarios, we fully customize products to meet your unique working conditions. In this way, you always get the most suitable MAO power solution.
Finally, we provide one-stop full-process technical support. Including on-site installation and commissioning, regular maintenance and timely troubleshooting. Whether for standard or customized models, we solve all your usage worries completely.
Learn more about related products:MAO Dual-Pulse Rectifier
