HP / Agilent 6443B DC POWER SUPPLY 0-120V / 2.5A

The HP/Agilent 6443B is a 300 W DC power supply delivering continuously variable output from 0 to 120 V and 0 to 2.5 A. Engineered for precision laboratory and development work, it employs silicon-controlled rectifier technology with a Ramp-Lock phase control circuit to achieve stable constant voltage and constant current regulation. The supply demonstrates excellent line transient immunity and fast load response, making it suitable for electronics testing environments requiring precise, adjustable power control.

– Technical Specifications

• Output voltage: 0–120 V (continuously variable to zero)
• Output current: 0–2.5 A (continuously variable to zero)
• Power output: 300 W
• AC input: 115 VAC ±10%, 57–63 Hz
• Maximum efficiency: 75% at full output
• Regulation: Constant Voltage/Constant Current (CV/CC)
• Load regulation (CV): <120 mV across 0–2.5 A
• Load regulation (CC): <25 mA across 0–120 VDC
• Temperature coefficient (CV): 0.05% + 30 mV/°C
• Temperature coefficient (CC): 8 mA/°C
• Output stability (8 hours, constant temperature): 0.15% + 90 mV (CV), 25 mA (CC)
• Transient response (CV): <300 ms recovery to within 600 mV nominal after ½-rated load change
• Transient amplitude: <4.0 V/A for load changes between 20% and 100% of rated current
• AC input current: ~19 A at full load (115 VAC, 60 Hz)
• Total power requirement: 1300 W max (115 VAC, 60 Hz)

– Key Features

• Silicon-controlled rectifier design for efficiency and performance
• Ramp-Lock phase control circuit for stable regulation
• Continuous adjustment of voltage and current to zero
• Remote programming via resistance or voltage source
• Remote sensing capability
• Fused AC input protection
• Forced-air cooling with intake and outlet vents

– Physical Characteristics

• Dimensions: 89 mm H × 483 mm W × 445 mm D (3.5" × 19" × 17.5")
• Weight: 31 lb
• Front panel: Light gray; case: Dark gray

– Compatibility & Integration

Designed for 115 VAC operation at 57–63 Hz. Remote programming and remote sensing enable integration into automated test systems and precision measurement setups.