Keysight 1147B AC/DC Current Probe

Keysight 1147B – Wide Bandwidth AC/DC Current Probe for High-Speed Transient Measurements

Keysight 1147B is a high-performance, active AC/DC current probe designed for engineers who require accurate, low-noise current measurements in power electronics and high-speed switching applications. With a flat bandwidth from DC to 50 MHz, the 1147B captures fast transient current waveforms with excellent signal integrity.

Optimized for use with InfiniiVision and Infiniium oscilloscopes, it delivers real-time current visibility with minimal circuit loading and ultra-low noise performance.

Key Highlights

Wide Bandwidth Performance

• Frequency range: DC to 50 MHz

• Ideal for fast switching and transient current capture

Low Noise, High Signal Integrity

• Noise level: < 2.5 mA RMS

• High signal-to-noise ratio for accurate low-current measurements

High Current Capability

• 15 A DC continuous

• 10 A RMS continuous

• 15 A peak (continuous)

• 30 A peak (non-continuous)

Built-in Protection & Stability

• Automatic over-current protection

• Dedicated demagnetizing switch to remove residual core magnetism

Flexible System Compatibility

• Compatible with high-impedance AutoProbe interface

• For 80000 / 90000 Series: use with N2779A power supply and E2697A high impedance adapter

• For 90000 X-Series: use with N5449A high impedance probe adapter

Package Includes

• Keysight 1147B current probe

• Quick reference guide

• Protective case

Typical Applications

• Motor controller current analysis

• Switching power supply testing

• Inverter transient current capture

• Inductive load driver analysis

• Power electronics R&D and troubleshooting