The HP/Agilent 6434B is a regulated DC power supply delivering 0–40V and 0–25A across a 1000 W output envelope. Engineered for lab, bench, and rack-mount installations, this unit combines automatic crossover circuitry that transitions between constant voltage (CV) and constant current (CC) modes, protecting both supply and load. Front-panel metering displays real-time voltage and current monitoring. Protection includes reverse voltage suppression, dual front-panel circuit breakers, and automatic activation upon 115% overload exceedance.
– Technical Specifications
DC Output
• Voltage: 0–40 VDC
• Current: 0–25 ADC
• Power Output: 1000 W
Line and Load Regulation
• Line Regulation (CV): <18 mV for 10% input variance
• Line Regulation (CC): <200 mA for 10% input variance
• Load Regulation (CV): <40 mV for 0–25 A load change
• Load Regulation (CC): <200 mA for 0–40 VDC load change
Stability and Temperature Performance
• Output Stability (CV): 0.1% + 20 mV over 8 hours (after 30-minute warm-up)
• Output Stability (CC): 250 mA over 8 hours at constant temperature
• Temperature Coefficient (CV): 0.03% + 5 mV/°C
• Temperature Coefficient (CC): 75 mA/°C
Transient Response and Impedance
• Transient Recovery Time (CV): <200 ms to within 200 mV following half-rated current step
• Output Impedance (DC–0.5 Hz): <0.01 Ω
• Output Impedance (0.5–100 Hz): <0.5 Ω
• Output Impedance (100 Hz–1 kHz): <0.1 Ω
• Output Impedance (1–100 kHz): <0.6 Ω
• Ripple and Noise: 0.5 mVrms / 10 mArms
Input Power
• Supply Voltage: 115 VAC ±10%
• Frequency: 57–63 Hz, single-phase
• Maximum Power Draw: 1300 W
• Maximum Input Current: 19 A
– Key Features
• Automatic CV/CC crossover with load-dependent mode selection
• Reverse voltage protection via output shunt diode
• Dual front-panel circuit breakers with integrated on/off control
• Overvoltage, Undervoltage, and Overcurrent Protection (OVP/UVP/OCP)
• Remote programming: 200 Ω/V (CV mode) and 10 Ω/A (CC mode)
– Typical Applications
Component testing, device characterization, bench development, and production burn-in requiring stable, adjustable DC sourcing up to 1 kW.
– Compatibility & Integration
Bench and rack-mount configurations supported. Remote programming interface enables external control via standard 200 Ω/V and 10 Ω/A scaling.
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