Your parts enter the rhodium plating tank or gold striking tank demanding absolute purity and dense surface adhesion. Consistent ripple, drift-free amperage under a sustained 300-amp load, and zero voltage sag define the difference between a batch that sells and one that must be stripped. This GAOHUI industrial high frequency rectifier factory engineered 12V 300A rectifier targets that exact outcome.
This unit is a digital, IGBT-based switched-mode power supply designed specifically to replace legacy linear or thyristor units for precious metal finishing. Rated at 12V and 300A continuous, it delivers pure DC output with less than 1% ripple to ensure flawless grain structure on jewelry, connectors, and labware. Whether you are operating a high-production barrel line or a laboratory precision rectifier for detailed reverse-plating recovery, this machine provides the stability and repeatability demanded by high-value surface finishing.
| Specification | Parameter | Notes / Application Value |
|---|---|---|
| Model | GGDF-12-300 | IGBT inverter topology |
| Input (Nominal) | AC 380V ± 15%, 3-Phase, 50/60Hz | High PF; suitable for industrial shop floors |
| Rated Output (Voltage / Current) | DC 0-12V / 0-300A | Full range continuous adjustability |
| Ripple (Load) | ≤ 1% RMS at full load | Low ripple essential for platinum and nickel finish density |
| Efficiency (Full Load) | ≥ 89% | Low heat waste compared to thyristor units |
| Control Mode | Constant Current / Constant Voltage (Auto Cross-over) | Default CC for plating; CV for lab recovery cycles |
| Stabilization Accuracy | ≤ 1% (CC / CV) | Drift-free operation over long shifts |
| Output Connection | Bus bar (standard); Air-cooled | Anti-corrosion treated for acidic wet areas |
| Cooling Method | Intelligent forced air | Stainless steel fan guard, high dust tolerance |
| Protection Class | IP22 (standard); IP54 available for wet rinse zones | NEMA 4X optional |
| Weight | Approx. 38 kg | Rack mountable / wall mountable bracket kit included |
| Standard Interface | RS485 Modbus RTU / Remote I/O | Ethernet (TCP/IP) interface field-upgradeable |
This rectifier is not a basic transformer block. It contains a layered protection architecture to safeguard your IGBT rectifier manufacturer investment. The system features electronic short-circuit proof design, built-in reverse polarity alert that prevents tank contamination, and an over-temperature thermal trip set to 85°C with auto-restart logic. Input transient protection handles common factory power spikes from motor drives and overhead cranes. This level of fault tolerance ensures the “recovering rectifiers” scenario you see on forums—an off-the-shelf battery charger failing in a nickel sulfamate bath—never applies here.
Designed for the precious metals workflow:
– Gold & Rhodium Engineered Finishing: Run your gold strike bath at 4V to 6V and 60-80A without output oscillation, then switch to the rhodium tank at 8V and 200A precisely. The ultra-low ripple eliminates burned deposits on tight geometry components.
– Silver & Electrolytic Recovery: Run long-hour reverse cycles for silver plate recovery or silver stripping from scrap. The 300A capacity increases throughput compared to 30V/10A lab units, while the CC control protects against stripping base materials in a 50 lbs silver plate batch.
– Palladium / Nickel Alternate Processes: Variable voltage control handles pH-sensitive palladium baths where overshoot past 12V would deplete the deposit. The digital loop stabilizes at your set point within 25 milliseconds.
– Precision Brush / Pen Plating Integration: Interfaces with standard JST connectors. This unit can drive three independent pen plating solutions (gold, nickel, copper or brass) from a single stable DC bus, saving shop floor space versus three separate small rectifiers.
This power supply is built for factories that require a 1V-1000V and 1A-100,000A range capability, and our standard 100A to 20,000A floor units share the exact same control platform. For this specific unit, GAOHUI offers complete customization:
– Process Timer: Set duration from seconds to hours; enables consistent “dip and time” standard work.
– Multi-Stage Profile Control: Up to 6 ramped current segments (e.g., high current strike at 280A for 5 seconds, dwell at 120A for 100 seconds, then rinse) stored in non-volatile memory.
– Ampere-Minute Integrator: Accumulates true plating charge for bulk work like gold-silicon chip frames where thickness controls to +/- 0.0001 mm.
– Automatic Reverse Polarity: Pulse reverse (PR) cycle adjustable from 1 Hz to 100 Hz; critical for high-speed nickel plating and micro-crack chrome reduction.
– Soft-Start / Soft-Stop: Ramp-up function at 0.1 second to 30 seconds prevents current crowding on fine wire or delicate components.
– Remote Automation: Analog (0-10V or 4-20 mA) input for remote set-point from PLC. RS485 Modbus RTU is standard, with Ethernet (TCP) available for centralized MES reporting.
– Pulse Function 1-3000Hz Adjustable: For specialized pulse plating of palladium-nickel alloys and cobalt-gold deposits on connectors, enabling fine grain deposit with increased hardness.
This GAOHUI unit is the heavy-duty DC power supply price benchmark for shops moving from outdated equipment to digital control. Unlike generic multi-chemistry supplies found on competitor sites, this 12V 300A rectifier is built entirely around the demanding electrolytic demands of the precious metal line.
Order your custom current voltage rectifier with GAOHUI factory-direct lead times and eliminate the unpredictable quality of second-market imports. Select your interface modules during configuration to fit your exact automation environment.
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