The HP/Agilent 6521A is a Series HVR DC power supply delivering stable, adjustable output from 0–1000 V at 0–200 mA. Built for precision high-voltage applications, this convection-cooled unit operates silently without forced air cooling. Front-panel analog meters provide direct voltage and current readouts, while precision thumbwheel controls enable repeatable setpoints.
## Technical Specifications
• Output: 0–1000 V dc, 0–200 mA
• Input: 105–125 V ac, 50–500 cps; 4 A maximum, 270 W consumption
• Load regulation (constant voltage): <0.005% + 10 mV
• Load regulation (constant current): <2% or mA
• Line regulation (constant voltage): <0.001% + 10 mV (105–125 V ac range)
• Line regulation (constant current): <1 mA
• Ripple and noise (constant voltage): <1 mV rms
• Ripple and noise (constant current): <2 mA rms
• Transient recovery: <50 μsec to 0.005% or 20 mV (whichever greater)
• Temperature coefficient (constant voltage): 0.12% + 1 mV/°C post warm-up
• Temperature coefficient (constant current): 0.2% + 0.1 mA/°C post warm-up
• 8-hour stability (constant voltage): 0.036% + 3 mV drift
• 8-hour stability (constant current): 0.25% + 0.5 mA drift
• Calibration accuracy: 1% of voltage control setting
## Key Features
• Three-decade thumbwheel voltage selector with 0.002% vernier resolution
• Single-turn potentiometer current control
• Integrated 0–1 kV and 0–200 mA analog meters
• Convection cooling; no moving parts except meter movement
• Operating temperature: 0–50°C
• Storage temperature: −20 to +70°C
## Typical Applications
High-voltage DC applications demanding low ripple, fast transient response, and long-term output stability. Test benches requiring manual voltage/current adjustment with direct panel metering.
