Keysight N2780B AC/DC Current Probe

Keysight N2780B AC/DC Current Probe

Overview

The Keysight N2780B AC/DC Current Probe is a high-performance clamp-on current probe designed for accurate measurement of both AC and DC currents in electronic and power systems. Utilizing a hybrid sensing technology that combines a Hall-effect sensor with an AC current transformer, the probe delivers precise and stable current measurements without breaking the circuit.

With a bandwidth of DC to 2 MHz and a continuous current capability of up to 500 Arms, the N2780B is ideal for analyzing both steady-state and dynamic current behavior in modern electronic systems.

Key Features

• Hybrid AC/DC measurement technology
  Combines Hall-effect sensor and current transformer for accurate full-range current detection

• Wide bandwidth: DC to 2 MHz
  Enables capture of both low-frequency and high-speed transient signals

• High current capability (500 Arms continuous)
  Suitable for power electronics, motor drives, and industrial systems

• High accuracy (~1%) and low noise
  Ensures reliable waveform analysis and measurement precision

• Clamp-on, non-intrusive measurement
  No need to break the circuit, improving safety and convenience

• Flat frequency response & low insertion loss
  Maintains signal integrity across the measurement range

• Overload protection
  Prevents damage when measuring high current levels

• Demagnetization function
  Built-in “Demagnetize” button removes residual magnetic effects

• Direct oscilloscope connectivity (BNC)
  Compatible with Keysight InfiniiVision and Infiniium series scopes

Applications

• Power electronics testing (inverters, converters, SMPS)

• Motor drive and industrial automation analysis

• Transient current measurement

• Energy systems and power quality analysis

• Automotive and EV power diagnostics

• Electronic ballast, LCD, and inductive load testing

Technical Specification Table

Technical Insights

• Hybrid sensing allows accurate DC + high-frequency AC measurement in one probe

• Flat response ensures waveform integrity for switching signals and transient analysis

• Essential tool for engineers working with power electronics and high-current systems

• Can be used with N2779A power supply to operate multiple probes simultaneously