The Mastech HY3020D is a regulated linear DC power supply engineered for laboratory, industrial, and educational electronics applications. It delivers continuously adjustable voltage from 0 to 30 V DC and current from 0 to 20 A, with 600 W total power output. The unit features dual LED displays with ±1% voltage accuracy and ±2% current accuracy, coarse and fine adjustment controls, and exceptional line and load regulation performance. Switchable input accepts both 110 V/60 Hz AC and 220 V/50 Hz AC via toggle selection. Constant current and short-circuit protection safeguard connected equipment, while recovery time under 100 microseconds ensures stable transient response. Ripple and noise remain below 0.5 mV RMS in constant voltage mode and 3 mA RMS in constant current mode. The metal chassis design incorporates fan and heat sink cooling for extended operation in ambient temperatures from 0°C to 40°C at humidity levels below 80%. Standard banana-style output connectors provide straightforward circuit integration.
Technical Specifications
• Output Voltage: 0–30 V DC, continuously adjustable
• Output Current: 0–20 A, continuously adjustable
• Power Output: 600 W
• Input: 110 V/60 Hz AC or 220 V/50 Hz AC (switchable)
• Line Regulation (CV): ≤0.01% + 1 mV; (CC): ≤0.2% + 1 mA
• Load Regulation (CV): ≤0.01% + 3 mV; (CC): ≤0.2% + 3 mA
• Ripple & Noise (CV): ≤0.5 mV RMS; (CC): ≤3 mA RMS
• Recovery Time: <100 microseconds
• Display Accuracy: Voltage ±1%, Current ±2%
• Operating Temperature: 0°C to 40°C
• Relative Humidity: <80%
• Dimensions: 10.6" × 14.0" × 6.0"
• Weight: 24 lbs
– Key Features
• Dual LED displays for real-time voltage and current monitoring
• Coarse and fine adjustment knobs for precision control
• 10-turn potentiometer voltage adjustment (VOLTEQ variant)
• Constant current mode with integrated protection
• Fan and heat sink thermal management
• Metal benchtop chassis construction
• Standard banana connectors for output terminals
– Typical Applications
• Electronics testing and troubleshooting
• Component repair and characterization
• Laboratory research and development
• Educational demonstrations
• Hobbyist and prototype work
– Compatibility & Integration
The HY3020D accepts 110 V and 220 V input supplies via internal toggle switching, accommodating global facility configurations. Standard output connectors integrate with conventional test benches and measurement setups.
