Keysight (Agilent) N2779A Power Supply for N2780-83A / B Current Probe

The Keysight N2779A is a dedicated DC power supply engineered to operate the Keysight N2780–N2783 series AC/DC current probes. It delivers precisely regulated ±12V DC output across three independent probe-power connectors, enabling simultaneous operation of multiple current probes for comprehensive three-phase power analysis and system diagnostics.

Technical Specifications

• Output Voltage: ±12V DC ±0.5V


• Output Current: ±1.4A per connector (rated maximum)


• Ripple Voltage: ≤50 mV peak-to-peak at rated output current


• Number of Outputs: 3 probe-power connectors


• Input Supply: 100–240 VAC, 50/60 Hz (±10% voltage fluctuation tolerance)


• Power Consumption: 130 VA maximum


• Load Coefficient: Output voltage maintained within limits for 0–1.4A load range


• Temperature Coefficient: Output voltage maintained within limits for 0–40 °C ambient


• Installation Category: CAT II


• Transient Overvoltage Rating: 2500V


• Dimensions: 80 mm (W) × 119 mm (H) × 200 mm (D)


• Weight: 1.2 kg


• Certification: UL listed

Key Features

• Universal AC input accepts 100–240 VAC without configuration changes


• Three simultaneous outputs support multi-probe deployments


• Front-panel probe-power connectors ensure convenient field accessibility


• Rear-panel power switch for standard operational control


• Low output ripple (≤50 mV pp) minimizes measurement noise in sensitive current applications


• Stable output across load variation and temperature extremes

Typical Applications

• Three-phase AC power system diagnostics and monitoring


• Multi-channel current measurement in industrial power analysis


• Simultaneous probe operation in distributed measurement scenarios

Compatibility & Integration Designed for Keysight N2780A/B, N2781A/B, N2782A/B, and N2783A/B AC/DC current probes. Also compatible with legacy N2774A current probes.