HP / Agilent 6632A DC power supply, 0-20 Vdc, 0-5 A

The HP/Agilent 6632A is a 100 W single-output DC power supply delivering 0–20 Vdc at 0–5 A with programmable constant voltage and constant current modes. Built-in digital metering, HP-IB (IEEE 488) control, and selectable Fast/Normal operation modes enable precise power delivery across development, test, and research applications. An SCR crowbar provides overvoltage protection while current sinking capability accelerates output discharge and down-programming transients.

– Technical Specifications

Output Ratings
• Voltage: 0–20 Vdc (programming range 0–20.475 Vdc)
• Current: 0–5 A (−5 to 5 A at 40 °C)
• Power: 100 W

Programming Accuracy (25 °C ± 5 °C)
• Voltage: ±10 mV or 0.05% + 10 mV
• Current: +0.05% + 2 mA or 0.15% + 7 mA
• Current resolution: 1.25 mA
• Overvoltage protection resolution: 100 mV

Output Ripple & Noise (20 Hz–20 MHz)
• Voltage normal mode: 0.3 mV rms / 3 mV peak-to-peak
• Voltage fast mode: 1 mV rms / 10 mV peak-to-peak
• Current: 2 mA rms

Load and Line Regulation
• Load voltage: 2 mV
• Load current: 1 mA
• Line voltage: 0.5 mV
• Line current: 0.5 mA

AC Input
• Line voltage: 100, 120, 220, or 240 Vac
• Input requirement: 350 VA max
• Fuses: 4 A (100/120 Vac) or 2 A (220/240 Vac)

Environmental & Physical
• Operating temperature: 0–55 °C
• Net weight: 10.5 kg

– Key Features

• Programmable CV/CC operation with front-panel keypad and HP-IB control
• Built-in digital voltmeter and current shunt for real-time output monitoring
• Current sinking to rated maximum for rapid capacitive discharge
• Fast/Normal mode selection via rear-panel switch
• Programmable overvoltage and overcurrent protection with SCR crowbar
• Self-test verification of HP-IB, D/A, and A/D converters

– Typical Applications

Device characterization, power source requirements in automated test systems, circuit development where stable, low-noise DC power and programmable protection are essential.

– Compatibility & Integration

HP-IB (IEEE 488) interface enables remote programming, status reporting, and interrupt generation via standard commands.