Output: 0-1000V DC / 0-5A Adjustable
Power: 5kW Maximum
Technology: Ultra-High Voltage Single-Pulse PEO
Best For: Advanced Ceramic Coating R&D, Specialized Alloy Treatment, High-Performance Material Surfaces
The 5A MAO rectifier delivers ultra-high-voltage single pulses for advanced Plasma Electrolytic Oxidation research. Specifically, this specialized micro-arc oxidation power supply provides exceptional electrical potential for challenging PEO applications. Consequently, it enables researchers to develop ceramic coatings on alloys and materials that require higher breakdown voltages. Furthermore, this high-voltage MAO system supports cutting-edge surface engineering investigations.
| Parameter | Specification |
|---|---|
| Input Power | 3-Phase 400VAC, 50/60Hz |
| DC Output | 0-1000V / 0-5A |
| Pulse Mode | Single-Pulse Operation |
| Pulse Frequency | 5-500 Hz Adjustable |
| Duty Cycle | 2-30% (Optimized for UHV PEO) |
| Peak Power | Up to 8kW (Pulse) |
| Control Interface | Industrial Touchscreen with Safety Interlocks |
| Process Control | Programmable Voltage Ramp, Advanced Arc Management |
| Safety Features | Dual Insulation Monitoring, Emergency Stop, Door Interlock |
| Cooling | Air |
| Protections | OVP, OCP, OTP, Ground Fault, Insulation Failure |
| 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.
This 1000V MAO rectifier addresses specialized challenges in advanced surface engineering. These applications include, for example:
In High-Performance Aerospace Research, it enables PEO coating development on advanced aluminum-lithium alloys. Specifically, it supports materials that require higher breakdown voltages for optimal ceramic layer formation.
For Advanced Electronic & Semiconductor Applications, the ultra-high voltage capability allows research into PEO coatings for high-temperature electronics. Additionally, it supports specialized dielectric layers where conventional voltages prove insufficient.
In Fundamental PEO Mechanism Studies, researchers use the extended voltage range to investigate plasma characteristics. Furthermore, they study coating formation kinetics under extreme electrical conditions. Thus, this MAO system advances the fundamental understanding of PEO technology.
In Specialized Industrial Applications, it supports development of ultra-hard, thick ceramic coatings. Specifically, it serves extreme wear environments. Therefore, it addresses applications where conventional PEO systems cannot achieve required coating properties.
Ultimately, this 5A 1000V single-pulse MAO rectifier represents the frontier of PEO power technology. Consequently, it provides researchers with unprecedented voltage capability. Thus, they can explore new material combinations. Furthermore, they can push the boundaries of ceramic coating performance through advanced micro-arc oxidation processes.
Unmatched Voltage Range: Firstly, the unit delivers up to 1000V pulses. Therefore, it enables research on materials with higher breakdown voltages. Consequently, it expands the scope of PEO investigations.
Superior Arc Management: Secondly, advanced detection circuits protect coating integrity. Specifically, they suppress unstable arcs instantly. Thus, sample quality is preserved.
Comprehensive Safety Features: Additionally, dual insulation monitoring ensures operator protection. Likewise, emergency stop and door interlocks add multiple layers of safety. Therefore, researchers can work confidently at high voltages.
Research-Ready Design: Finally, programmable voltage ramps enable precise process control. Furthermore, integrated data logging supports thorough analysis. As a result, this MAO rectifier is ideal for laboratory and pilot-scale research environments.
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.