HP / Agilent 6684A 5000 Watt System Power Supply, 40V, 128A

The HP/Agilent 6684A is a 5000 W programmable DC power supply engineered for high-power test, burn-in, and industrial control applications. It delivers 0–40 VDC at 0–128 ADC with exceptional voltage regulation of 0.001% and output noise of 1.0 mV RMS. Programming accuracy reaches 0.04% + 40 mV on voltage and 0.1% + 65 mA on current, making it suitable for automated testing where precision and stability are critical.

The unit supports GPIB (IEEE 488) control with industry-standard SCPI command set, analog voltage/current control, and VXIplug&play drivers for rapid integration. Serial link architecture allows connection of up to 16 units through a single GPIB address. Remote sensing accommodates voltage drops up to half the rated output on each load lead, and response time is 60 ms. Built-in protections include programmable over-voltage and over-current limits, over-temperature shutdown, and discrete fault indication with remote inhibit capability.

– Technical Specifications

• Output voltage: 0–40 VDC
• Output current: 0–128 ADC
• Maximum power: 5000 W / 5120 W
• Voltage programming accuracy: 0.04% + 40 mV at 25°C ± 5°C
• Current programming accuracy: 0.1% + 65 mA at 25°C ± 5°C
• Voltage regulation: 0.001%
• Voltage ripple and noise: 1.0 mV RMS, 10 mV peak-to-peak (20 Hz to 20 MHz)
• Response time: 60 ms
• Operating temperature: 0°C to 55°C
• Input power: 180–235 Vac or 360–440 Vac (3-phase); 7350 VA / 6000 W
• Weight: Approximately 50 lbs

– Key Features

• Programmable over-voltage and over-current protection
• Over-temperature protection with auto-shutdown
• Remote sensing up to half rated output voltage per lead
• Selectable load compensation for inductive circuits
• Fan-speed control to reduce acoustic noise
• Power-on self-test via GPIB or automatic at startup
• User-configurable power-on state
• Auto-parallel capability for up to three units
• Series connection support for higher voltage applications

– Typical Applications

• Automated test equipment (ATE)
• Device burn-in and stress testing
• Industrial control systems
• High-power DC load simulation

– Compatibility & Integration

GPIB (IEEE 488) with SCPI commands, analog control inputs, and VXIplug&play driver support enable integration into multi-instrument test systems. Serial link architecture reduces GPIB channel requirements in large-scale deployments.