Pearson Electronics
Wide-Band Current Transformers

Since 1955, Pearson Electronics has been manufacturing current transformer products. Our website is designed to simplify the selection of the right current probe to fit your application. Our current sensors feature pulse-current monitoring down to less than 1ns, making these high frequency current transformers ideal for a world of applications. Please contact us for application and sales support.


Wideband Current Monitors

Whether you are interested in observing and measuring submilliamp currents in a charged particle beam or thousands of amps resulting from a fault in a major power feeder, you will find a Pearson current monitor to suit your needs. Our current sensor devices of larger inner diameter make possible high voltage current measurement without the risk of voltage breakdown. Several of our current transformer models feature double shielding for greater noise immunity and increased safety in high voltage applications. All models are sealed and are suitable for use in high voltage insulating oil or under vacuum. They can be connected to oscilloscopes, spectrum analyzers, power analyzers, digital voltmeters, analog-to-digital convertors, and a variety of other measuring instruments.

SINCE 1955
Leading the Industry

Pearson Electronics is the original and leading manufacturer for precision current-monitoring transformers used for accurate AC current measurements. The company was founded in 1955 by Dr. Paul Pearson, inventor and patent holder, of the precision wide-band current transformer. The Pearson design plus careful workmanship and quality control produce current monitors with excellent frequency response and amplitude accuracy. Originally developed for measuring pulse-currents, Pearson Current Monitors™ are now also widely used to measure more complicated transients and periodic signals from a few Hertz to well into the megaHertz region.

Pearson Electronics has long been considered the market leader in the design and manufacturing of Wide-Band Current Transformers used for accurate AC current measurements. Pearson Current Transformers can measure transients, harmonics, pulse, sine-wave, RF and other complex current wave shapes. A frequency range from 0.7 Hz to 350 MHz is covered, with our most popular model covering 1 Hz to 20 MHz ± 3 dB. 1% accuracy, or better, is obtainable over the mid-band. The current range is from micro-amps to kilo-amps and we manufacture both toroid and clamp-on Current Transformers. We stock a large variety of models for immediate delivery and design and manufacture for both OEM and custom requirements.

Pearson Electronics also specializes in the design of High Voltage Pulse Transformers that are used with high power microwave tubes and Capacitive Voltage Dividers. These transformers employ open construction and are intended to be used in high voltage insulating oil. Pulse output voltages range from 100kV to 500kV with pulse lengths from 0.25 to 50 microseconds.

Pearson Electronics is proud to have a Quality Management System that is accredited to ISO 9001: 2008. This accreditation was completed by NQA; a leading global independently accredited certification body providing assessments of organizations to various Management System Standards since 1988.

Pearson Electronics

4009 Transport Street, Palo Alto, CA 94303
Phone: +1 (650) 494-6444 | FAX (650) 494-6716


  • Indirizzo: Via Agrigento 9, MILANO, Italy

  • Phone: (+39) 02 39262464

  • Phone: (+39) 02 39260434

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