Agilent / Keysight U8031A Triple-Output Power Supply

The Agilent/Keysight U8031A is a triple-output DC power supply designed for benchtop testing and experimentation. It delivers three independent, adjustable voltage and current outputs enabling simultaneous powering of multiple circuits with precise control. Each output operates independently with dedicated digital monitoring and integrated protection.

The instrument is built for engineering labs, educational facilities, and development environments demanding reliable, flexible power delivery.

Technical Specifications

• Three independent DC outputs with adjustable voltage and current per output


• Outputs 1 & 2: 0–6 V, 0–5 A with 10 mV and 10 mA resolution


• Output 3: 0–30 V, 0–1 A with 100 mV and 10 mA resolution


• Load regulation (Outputs 1 & 2): ≤0.01% + 2 mV (voltage), ≤0.02% + 5 mA (current)


• Load regulation (Output 3): ≤0.01% + 20 mV (voltage), ≤0.02% + 2 mA (current)


• Line regulation (Outputs 1 & 2): ≤0.01% + 5 mV (voltage), ≤0.02% + 10 mA (current)


• Line regulation (Output 3): ≤0.01% + 50 mV (voltage), ≤0.02% + 5 mA (current) Output Quality


• Ripple and noise (20 Hz–20 MHz): ≤1 mVrms normal mode voltage (all outputs)


• Ripple and noise (20 Hz–20 MHz): ≤5 mArms normal mode current (Outputs 1 & 2), ≤2 mArms (Output 3)


• Common mode voltage: ≤1 mVrms across all outputs


• Transient response (50%–100% load change): <500 µs recovery (Outputs 1 & 2), <1 ms recovery (Output 3) Protection and Control


• Overvoltage protection (OVP) and overcurrent protection (OCP)


• Output enable/disable per channel


• Digital LED display with simultaneous voltage and current readout for each output


• Standard binding post terminals Power Input


• Input voltage range: 100–120 V

Key Features

• Independent output control allows multi-rail power distribution in single instrument


• Low output ripple and noise (<1 mVrms) supports sensitive analog circuit testing


• Fast transient response ensures stable supply under dynamic load conditions


• Digital display eliminates analog meter ambiguity during real-time monitoring

Typical Applications

• Multi-rail IC and circuit development and characterization


• Analog and mixed-signal device testing requiring independent supply rails


• Educational laboratory benchtop power delivery


• Device burn-in and reliability testing protocols

Compatibility & Integration Standard binding post outputs integrate with conventional test leads and fixtures. The U8031A operates from standard 100–120 V AC mains.