Agilent/Keysight 6438B DC Power Supply

The Agilent/Keysight 6438B is a precision DC power supply delivering 0–60 Vdc at 0–5 A with 300 W maximum output. Built for research, development, and manufacturing environments, it combines programmable voltage and current control with constant voltage/constant current operation modes and comprehensive protection circuitry. Remote sensing and programming capabilities enable integration into automated test systems.

Technical Specifications

• Voltage: 0–60 Vdc


• Current: 0–5 A


• Power: 300 W maximum


• Output Inductance: 1.0 μH Constant Voltage Regulation


• Load Effect: <60 mV (0–5 A change)


• Source Effect: <30 mV (105–125 Vac input change)


• Temperature Coefficient: 0.05% + 15 mV/°C Constant Current Regulation


• Load Effect: <50 mA (0–60 Vdc load change)


• Source Effect: <50 mA (105–125 Vac input change)


• Temperature Coefficient: 15 mA/°C AC Power Input


• Voltage: 105–125 Vac


• Frequency: 57–63 Hz


• Input Current: 6.5 A


• Power Consumption: 400 W maximum Ripple & Noise


• Peak-to-Peak Ripple: Line-frequency independent

Key Features

• CV/CC operation modes


• Remote sensing for accurate load-point regulation


• Remote programming via resistance or voltage source


• Overvoltage protection (optional internal crowbar)


• Overcurrent and overload protection with front-panel indication


• Over-temperature protection with automatic transformer disconnect


• Soft-start circuit limiting inrush current during power-on


• Phase-balance compensation permitting up to 8% line voltage imbalance

Physical Characteristics

• 19-inch rack-mount format


• Dimensions: 89 mm H × 483 mm W × 445 mm D (3.5" × 19" × 17.5")

Compatibility & Integration Supports remote sensing and remote programming interfaces for system integration. automated test environments and bench-level laboratory setups.