Hewlett Packard 6644A System D.C. Power Supply 0-60 V 0-3.5A

Hewlett Packard 6644A System D.C. Power Supply 0-60 V 0-3.5A. Unit powers on. Completes self-test. Checked with load resistor O.K. Rotary controls and pushbutton programming verified. No cables, manual or other accessories. As shown.

The Hewlett Packard (HP) 6644A System DC Power Supply is a 200-watt, single-output, series-pass regulated power supply designed for applications requiring precise voltage and current control. It features an internal GPIB interface and SCPI programming, facilitating seamless integration into automated test systems. Quiet/noise free operation for interference sensitive (RF) equipment and testing.

Key Specifications:

• Output Voltage: 0 to 60 V
• Output Current (at 40°C): 0 to 3.5 A
• Maximum Current (at 50°C/55°C): 3.2 A / 3 A
• Programming Accuracy at 25°C ±5°C:
  • Voltage: 0.06% + 26 mV
  • Current: 0.15% + 4.1 mA
• Ripple & Noise (20 Hz – 20 MHz) self-generated or passed from source:
  • Voltage RMS: 500 µV
  • Voltage Peak-to-Peak: 5 mV
  • Current RMS: 1.5 mA

Notable Features as found in many power supplies of this model family:

• Fast Programming Response: Designed to maximize the throughput of devices under test (DUTs) through manufacturing test processes with rapid up and down programming times.
• Protection Features: Includes fast protection mechanisms such as fast crowbar, mode crossover protection, and the capability to connect the protection circuitry of multiple power supplies, enhancing production yield.
• Parallel and Series Operation: Outputs can be connected in parallel or series, and up to three units can auto-parallel for higher current requirements.
• Programmable Protection: Offers programmable over-voltage and over-current protection to safeguard connected devices.
• Self-Test and Diagnostics: Performs self-tests at power-on or via GPIB command, ensuring reliable operation and easy troubleshooting.