Dual-pulse, water-cooled, 100A/750V–30A/300V, N+1 parallel (3 units), full protection.
GAOHUI’s Plasma Electrolysis 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 rectifier 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.
Generally speaking, choosing the right Plasma Electrolysis 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 Plasma Electrolysis 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.
| Single Pulse | ||||||
| No. | Model | Forward Current (A) | Forward Voltage (V) | Input Voltage (V) | Cooling Method | W×L×H (mm) |
| 1 | 5A750V | 5 | 750 | 220 | Air-cooled | 290×520×190 |
| 2 | 10A750V | 10 | 750 | 380 | Air-cooled | 510×560×230 |
| 3 | 20A750V | 20 | 750 | 380 | Air-cooled | 560×760×320 |
| 4 | 30A750V | 30 | 750 | 380 | Air-cooled | 560×760×320 |
| 5 | 50A750V | 50 | 750 | 380 | Air-cooled | 520×580×930 |
| 6 | 100A750V | 100 | 750 | 380 | Air-cooled | 580×650×1650 |
| 7 | 200A750V | 200 | 750 | 380 | Water-cooled | 850×1130×1630 |
| 8 | 300A750V | 300 | 750 | 380 | Water-cooled | 800×1270×1700 |
| 9 | 500A750V | 500 | 750 | 380 | Water-cooled | 800×1270×1900 |
| Dual Pulse | ||||||||
| No. | Model | Forward Current (A) | Forward Voltage (V) | Reverse Current (A) | Reverse Voltage (V) | Input Voltage (V) | Cooling Method | Dimensions (mm) |
| 1 | 10A750V | 10 | 750 | 3 | 300 | 380 | Air-cooled | 510×560×230 |
| 2 | 30A750V | 30 | 750 | 10 | 300 | 380 | Air-cooled | 560×760×320 |
| 3 | 50A750V | 50 | 750 | 15 | 300 | 380 | Air-cooled | 520×580×930 |
| 4 | 100A750V | 100 | 750 | 30 | 300 | 380 | Air-cooled | 580×650×1650 |
| 5 | 200A750V | 200 | 750 | 50 | 300 | 380 | Water-cooled | 850×1130×1630 |
| 6 | 300A750V | 300 | 750 | 100 | 300 | 380 | Water-cooled | 800×1270×1700 |
| 7 | 500A750V | 500 | 750 | 150 | 300 | 380 | Water-cooled | 800×1270×1900 |
Power（KW） = Output Voltage（V） × Output Current（A）
The product comes with a one-year warranty and boasts a service life of over 10 years. It supports both Constant Current and Constant Voltage modes, and it also includes a programmable ramp-up function for current or voltage settings. For time-sensitive applications, you can use the timed operation mode. Moreover, the multi-segment function allows you to vary constant current or voltage levels over time. The device further offers an RS485 communication interface, automatic polarity reversal, and a minute-level timing function. If you need customization, please contact us for further details.
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.
Shows the peak voltage of the current pulse, a key parameter affecting coating strength.
Displays the average current over the working cycle to monitor reaction stability.
Set total time: Total process duration.
Total running time: Elapsed working time.
Cumulative ampere-minutes: Total current-time value for coating thickness control.
Multi-station ID for managing different workpiece processes.
Indicates disconnection from remote/host system, local control mode.
Constant current mode, the most common for micro-arc oxidation.
Press to immediately terminate the oxidation process.
Process stage: Current running step in multi-step program.
Ramp-up time: Time for voltage/current to rise to set value, avoiding impact.
Peak voltage limit: Maximum pulse voltage to prevent breakdown.
Frequency (Hz): Pulse working frequency, affects coating density.
Current stage: Current process segment number.
Hold time: Duration of current segment.
Average current setting: Target average current value.
Pulse "on" time percentage in one cycle, affects heat input and coating structure.
Button to start or stop the process.
Toggle between CV and CC control modes.
Pause or resume the ongoing process.
Access multi-step program editor for complex recipes.
Choose between single segment or multi-segment process.
Shows currently loaded/running process recipe.
Opens system configuration menu.
Manufacturer/support contact information.
View historical voltage/current trend graphs.
Visualizes real-time/historical voltage/current curve.
Displays the peak current value of the pulse.
Displays the average voltage over the working cycle.
Shows system date and time.
Shows the peak value of the positive pulse voltage.
Displays the average current of the positive pulse over the working cycle.
Shows the average voltage of the positive pulse over the working cycle.
Displays the peak value of the positive pulse current.
Shows the current running process number.
Sets the time for voltage/current to rise slowly from zero to the set value.
Shows the current running segment number in multi-stage processes.
Sets the duration for the current process segment.
Manufacturer/support contact information.
Shows the average voltage of the negative pulse over the working cycle.
Displays the peak value of the negative pulse current.
Shows the peak value of the negative pulse voltage.
Displays the average current of the negative pulse over the working cycle.
Sets the maximum allowed positive pulse voltage to prevent workpiece breakdown.
Sets the target average current value for the positive pulse.
Set total time: Total process duration.
Total running time: Elapsed working time.
Cumulative ampere-minutes: Total current-time value for coating thickness control.
Opens the system configuration menu.
Accesses the multi-step program editor to create complex recipes.
Selects between running a single segment or a multi-segment process.
Displays the currently loaded or running process recipe.
Temporarily pauses or resumes the ongoing process.
Toggles between constant voltage and constant current control modes.
Multi-station ID for managing different workpiece processes.
Indicates disconnection from the remote/host system, local control mode.
Current operating mode: constant current control.
Press to immediately terminate the oxidation process.
Positive: Pulse frequency, duty cycle, number of pulses.
Negative: Pulse frequency, duty cycle, number of pulses.
Main button to start or stop the entire process.
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 power supply 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:Single-Pulse Rectifier
A: Products with the same nominal specifications often serve different industries, and they may carry different detailed parameter requirements. These differences directly affect production costs and technical solutions, so final prices will vary accordingly. For this reason, we recommend you contact us directly to receive a precise and tailored quotation.
A: We assign specialized consultants to support each industry sector. If you need further information, simply reach out to us. After we confirm your request, we will immediately send you the full technical datasheets and product images you need.
A: We focus on custom non-standard industrial power supplies, so we can fully adjust output current and voltage to match your exact needs. The products shown on our website only represent part of our actual range, as we do not list every model online. If you cannot find your desired specifications, please contact us directly. We will work with you to confirm your exact requirements, or we can guide you to select the most suitable parameters based on your industry standards. We will provide complete technical specifications and dimension drawings so you can fully understand the product.
