Keysight Unveils Isolated Probing Technology for High-Voltage Power Testing

  • Date published Tuesday, 11 March 2025 08:15
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  • 1.2 min read
Keysight Unveils Isolated Probing Technology for High-Voltage Power Testing Image Credit: Fahroni/Bigstockphoto.com

Keysight has developed an optically isolated differential probing family that enables accurate and safe measurement of floating circuits in high-voltage, noisy environments. The new voltage probes will be displayed at Keysight's booth at the Applied Power Electronics Conference 2025.

Keysight Technologies has developed an optically isolated differential probing family dedicated to enhancing efficiency and performance testing of fast-switching devices such as wide bandgap GaN and SiC semiconductors. The new voltage probes will be displayed at Applied Power Electronics Conference (APEC) 2025 in Keysight’s booth (#829) along with Keysight’s MXR B and HD3 series of oscilloscopes.

Validation of floating half-bridge and full-bridge architectures commonly used in power conversion, motor drives, and inverters requires measurement of small differential signals riding on high common-mode voltages. This measurement can be challenging due to voltage source fluctuations relative to ground, noise interference, and safety concerns. Isolated differential probes are galvanically isolated and reject common-mode voltages, enabling power electronics engineers to measure floating circuits accurately and safely in high-voltage, noisy environments. This technology will drive progress in efficiency and switching loss testing for high-voltage applications like electric vehicles (EVs), solar energy, battery management systems, and more.

Keysight’s isolated differential probes provide up to 10 billion times greater common-mode rejection than standard differential probes, making them ideal for high-voltage, high-side measurements. With up to 1 GHz bandwidth and a ±2,500 V differential voltage range, these probes enable accurate analysis of fast-switching GaN and SiC devices.

 

Last modified on Thursday, 15 May 2025 08:27
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Leo is a contributing editor who covers the fast-evolving world of cybersecurity, reporting on AI-powered threat detection, zero-trust architectures, ransomware tactics, cloud-native security, and digital privacy. His articles break down complex topics for both technical and executive audiences. In parallel, Leo is a skilled videographer and photographer, often on the ground at cybersecurity conferences, tech expos, and live demos. His visual storytelling brings immediacy and context to our coverage. UK-educated and deeply connected within the global security scene, Leo adds a sharp, journalistic edge to both written and multimedia content.

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