The Mastech GPS-1850D is a single-output linear DC power supply engineered for laboratory, educational, and industrial applications requiring precision voltage and current control. Delivering 0–18V DC at 0–5A with 90W capacity, the unit operates in both constant voltage (CV) and constant current (CC) modes with automatic crossover to maintain stable output under dynamic load conditions. Dual LED displays provide real-time voltage and current monitoring with ±(0.5% of reading + 2 digits) accuracy. Coarse and fine potentiometers enable precise adjustment across the full range.
Technical Specifications
Output Performance
• Voltage: 0–18V DC
• Current: 0–5A DC
• Power Rating: 90W
• CV Line Regulation: ≤0.01% + 3mV
• CV Load Regulation: ≤0.01% + 3mV (≤3A); ≤0.01% + 5mV (>3A)
• CC Line Regulation: ≤0.2% + 3mA
• CC Load Regulation: ≤0.2% + 3mA
• Ripple & Noise: ≤0.5mVrms at 5Hz–1MHz (≤3A); ≤1.0mVrms (>3A); CC Mode ≤3mArms
• Recovery Time: ≤100µs (50% load change, minimum 0.5A)
• Temperature Coefficient: ≤300ppm/°C
Input & Power
• Voltage: 100V/120V/220V/240V ±10%, 50/60Hz (switch-selectable)
• Fuse: T 2.5A 250V (220V/240V input); T 2A 250V (100V/120V input)
Mechanical & Environmental
• Dimensions: 128(W) × 145(H) × 285(D) mm
• Weight: 5.5kg
• Operating Temperature: 0–40°C
• Operating Humidity: <80% RH
• Storage: -10–70°C, <70% RH
• Chassis-to-Output Insulation: 20MΩ (DC 500V)
• Chassis-to-AC Cord Insulation: 30MΩ (DC 500V)
• Altitude: Up to 2000m; Installation Category II; Pollution Degree 2
– Key Features
• Dual bright LED displays with coarse/fine adjustment controls
• Automatic CV/CC crossover for load-adaptive regulation
• Output terminals: positive, negative, and ground binding posts
• Remote control terminals for external programming
• Overload and reverse polarity protection
• Low ripple performance across full frequency bandwidth
– Typical Applications
Component testing and device characterization in R&D environments; educational laboratory demonstrations; industrial equipment commissioning and troubleshooting; prototype power delivery in development workflows.
– Compatibility & Integration
Remote control terminals support external programming interfaces for automated test sequences and integration into larger measurement systems.
