Output: 0–750V / 0–30A
Output Mode: Single-pulse
Cooling: High-efficiency forced air cooling
Accuracy: ≤ ±0.5%, current ripple ≤ 0.5%
Applications: Micro-arc oxidation, ceramic coating, alloy surface treatment
Protections: Overcurrent, overvoltage, overheating, short circuit
Core Advantage: Stable single-pulse output, air-cooled design, ideal for industrial MAO treatment
The MAO Single-Pulse Rectifier 30A 750V Air-Cooled is a professional power supply designed for micro-arc oxidation surface treatment. This MAO Single-Pulse Rectifier delivers stable 30A 750V single-pulse output to form high-density ceramic coatings on aluminum, magnesium and titanium alloys. Its air-cooled structure ensures continuous 24/7 operation without water cooling systems, and adjustable parameters adapt to various industrial MAO processes.
| Parameter | Specification |
|---|---|
| Input Power | 380VAC Three-Phase, 50/60Hz |
| DC Output | 0–750V / 0–30A |
| Output Mode | Single-pulse controlled output |
| Current Ripple | ≤ 0.5% |
| Control Accuracy | ≤ ±0.5% |
| Pulse Frequency | Adjustable for MAO processes |
| Control Interface | Touchscreen HMI with program storage |
| Cooling | High-efficiency forced air cooling |
| Protections | Overcurrent, overvoltage, overheating, short circuit |
| Working Temp | -10℃ ~ 50℃ |
| 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.
First of all, the Rectifier provides precise and stable single-pulse output to ensure uniform ceramic coating growth. Moreover, it maintains low current ripple to improve surface finish and bonding strength. Additionally, it supports stepless voltage and current adjustment for different material treatment needs.
In turn, this Rectifier is specially tuned for micro-arc oxidation reactions, with fast response and accurate pulse control. As a result, it enhances coating density, hardness and corrosion resistance effectively. Furthermore, users can customize parameters to match aluminum, magnesium, titanium and other alloy treatments.
Additionally, the high-efficiency air-cooled system supports long-term full-load operation without water pipelines. Consequently, it simplifies installation and lowers daily maintenance workload. Meanwhile, it resists moisture and dust, making it suitable for industrial surface treatment workshops.
Furthermore, the high-precision control system ensures consistent treatment results and repeatable production performance. Besides, it supports automatic operation modes and program storage to streamline workflow. Finally, it includes multiple industrial-grade protections to prevent equipment damage and ensure safe operation.
Notably, the MAO Single-Pulse Rectifier excels in micro-arc oxidation for aluminum, magnesium and titanium alloys, producing wear-resistant and corrosion-resistant ceramic layers.
Besides, its high-voltage single-pulse output makes it ideal for industrial ceramic coating production, ensuring stable and uniform coating formation.
Meanwhile, the MAO Single-Pulse Rectifier supports precision metal surface treatment for automotive, aerospace and electronic components.
Additionally, it can be integrated into custom MAO processing equipment, providing stable power for various automated production lines.
Primarily, this Rectifier is professionally designed for micro-arc oxidation applications, with optimized pulse parameters and high working voltage.
Moreover, the air-cooled structure and user-friendly touchscreen make operation and maintenance simple, even for non-specialist staff.
Last but not least, it uses industrial-grade components that adapt to high-humidity and dusty workshops, ensuring long service life and stable performance.
Learn more about related products:Dual-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.
