Agilent/Keysight 6434B DC Power Supply

The Agilent/Keysight 6434B is a solid-state DC power supply delivering 0–40 V and 0–25 A with 1000 W maximum output. This instrument operates in constant voltage or constant current mode with continuously variable output to zero, making it suitable for benchtop and relay rack installations in electronic testing and development environments.

Technical Specifications

DC Output

• Voltage Range: 0–40 V


• Current Range: 0–25 A


• Power Output: 1000 W


• Operation Modes: Constant Voltage / Constant Current


• Output Variability: Continuously variable to zero in either mode Input Power Requirements


• Voltage: 115 Vac ±10%, single phase


• Frequency: 57–63 Hz


• Input Current: 19 A


• Maximum Input Power: 1300 W


• Efficiency: Up to 75% at full output Regulation and Stability

Line regulation in constant voltage mode is less than 18 mV for a 10% input voltage change; constant current mode holds less than 200 mA. Load regulation achieves less than 40 mV (CV mode, 0–25 A load change) and less than 200 mA (CC mode, 0–40 V load change). Temperature coefficient is 0.03% plus 5 mV/°C in CV mode and 75 mA/°C in CC mode. After 30-minute warm-up, output stability is 0.1% plus 20 mV for 8 hours (CV) and 250 mA for 8 hours at constant temperature (CC). Output Impedance
Typical impedance is less than 0.01 Ω (DC to 0.5 Hz), less than 0.5 Ω (0.5–100 Hz), less than 0.1 Ω (100 Hz–1 kHz), and less than 0.6 Ω (1–100 kHz). Remote Programming
Voltage programming: 200 Ω/V ±1%; Current programming: 10 Ω/A ±10%. Programming accepts remote resistance or remote voltage source.

Key Features

• Dual front-panel circuit breaker provides AC input protection and on/off switching


• Crossover protection automatically switches from constant voltage to constant current when output current exceeds preset limit


• Reverse voltage protection via output diode


• Operating temperature: ambient not to exceed 55°C

Typical Applications

• Electronic component and subsystem characterization


• Burn-in and stress testing


• Lab bench power sourcing


• Development and qualification testing

Compatibility & Integration Operating and Service Manual available. Originally manufactured by Hewlett-Packard (HP); compatible with legacy test systems and modern benchtop setups.