Agilent/Keysight 6812B DC Power Supply

The Agilent/Keysight 6812B is a dual-function AC power source and DC supply that integrates arbitrary waveform generation, power amplification, and multi-domain measurement analysis into a single instrument. It delivers up to 750 VA of AC power with precise voltage and current output, plus independent DC capability rated at 575 W. The 6812B consolidates power sourcing with built-in power analysis - measuring RMS/DC/peak voltage and current, real/apparent/reactive power, THD, and harmonic content up to the 50th harmonic - eliminating the need for external instrumentation in demanding test environments.

Technical Specifications

• Maximum Power: 750 VA


• RMS Voltage: 300 V | RMS Current: 6.5 A


• Peak Current: 40 A | Crest Factor: 6


• Frequency Range: DC, 45 Hz to 1000 Hz (with deratings below 45 Hz; measurement extension to 4.5 Hz possible at 250 µs digitization rate)


• Voltage Accuracy: 0.15% + 0.3 V (45–100 Hz) | 0.5% + 0.3 V (100–500 Hz) | 1% + 0.3 V (500–1000 Hz)


• Line Regulation: 0.1% full scale | Load Regulation: 0.5% full scale


• THD: 0.25% at 50/60 Hz | 1% worst case (45 Hz to 1 kHz) DC Output


• Power: 575 W


• Voltage: ±425 V | Current: 5.0 A Measurement Suite


• RMS, DC, and AC+DC voltage/current; peak voltage and current


• Real, apparent, and reactive power


• Total harmonic distortion and harmonic analysis (amplitude and phase to 50th harmonic)


• Triggered digitized waveform acquisition


• Frequency content limited to 4 kHz to prevent aliasing

Key Features

• Dual power analyzer option (020/022) adds independent rear-panel measurement inputs with full isolation to 300 Vac / ±425 Vdc


• Synchronized measurement capture between source output and external power analyzer input


• External shunt support for custom current measurement ranges


• UPS-specific measurements: transfer time, peak voltage, phase-locked loop performance


• Frequency modulation capability on AC output


• GPIB and RS-232 control interfaces

Physical Specifications

• Dimensions: 425.5 mm W × 88.1 mm H × 396 mm D


• Operating Humidity: Maximum 95% relative humidity

Typical Applications Product development and validation, quality assurance, uninterruptible power supply (UPS) testing, regulatory compliance verification, and harmonic analysis in power electronics testing.