Alrad Electronics has been UK distributor for Pearson Electronics for more than 30 years. In that time we have supplied high precision current monitors for a wide range of applications. Here are a few of them:-

Beam Instrumentation. Pearson Electronics designs and manufactures custom Current Monitors for use in the beam tubes, and large aperture clamp-on Current Monitors are applied outside the beam tube.  Pearson Current Monitors measure sub-milliamp currents.  Pulse rise times as fast as 1.5 nanoseconds can be viewed accurately. 

Pearson Wide-band Current Monitors can be hardened against neutron radiation by eliminating the use of Teflon.  A Vacuum level of 2E-7 torr with 12 L/sec effective pumping speed and an outgas rate ~2.4 torr L/sec has been obtained with our in-stock off the shelf models.  Related Monitors: 6585, 6656 and 7760

Lightning Discharge. Wide-Band Current Transformers are manufactured to characterize lightning strikes at leading lightning laboratories around the world. The high peak currents and moderately fast rise times make this an ideal application for a Pearson Current Transformer. The typical Pearson model will have 0.01 V/A transfer impedance, or less, for this application. Related Monitors: 1330 and 1423

Capacitive Discharge. Pearson Current Monitors are used to view faithful waveforms and make accurate current measurements from a capacitive discharge generator. The pulse amplitude, pulse length, rise time and current time product are the critical parameters to evaluate when selecting a Pearson Current Monitor for capacitive discharge applications. Contact us and we can select the best model for your application.

Plasma Research. Pearson Current Probes are used by the Semiconductor and Semiconductor Equipment Industry to make measurements at frequencies, typically 13.56 MHz, required in plasma research. To view frequencies of 13.56MHz with a 1% accuracy, we recommend selecting a probe that has a 3dB point of 135 MHz, or higher. Related Monitors: 6585, 6595, 8585C and 8590C

Medical Equipment. Pearson Current Transformers have been used in several medical applications. These include medical accelerators used in radiation equipment for oncology applications, the testing and calibrating of electrical surgical analyzers and other AC current measurements supporting research, development, and manufacturing of medical equipment. Contact us for more information.

Power Monitoring. The Power Industry uses Pearson Current Transformers to measure transients in switching gear and the observation of harmonics and phase relationships on power lines. The testing of circuit breakers for power protection is also a typical application. Many power analyzer manufacturers provide Pearson current transformers for use with their equipment.

Pearson Current Transformers can measure 60 Hz applications with a 1% accuracy provided the 3 dB cut-off point is 6Hz or less. A typical model for this application would have a transfer impedance of 0.1 V/A, or less. Custom current transformer designs with a 1.0 V/A transfer impedance are also available to measure small currents at 60 Hz. Related Models: Model 110 and 1423.

EMI test applications. Pearson Clamp-on Current Probes are used to make accurate AC current measurements to meet many of the EMC standards. EMI, surge, lightning, and other complex current wave-shapes can be viewed with a Pearson Current Probe. A typical model has a flat midband response with a 3 dB bandwidth of 6 Hz to 15 MHz, current as low as 10 micro amps (20 dBuA) and frequencies as high as 200 MHz can be viewed with a Pearson Clamp-on Current Probe. Related Monitors: 3525, 4688, 5101, 8585C, 8590C, 8585C and 8590C.

Particle Accelerator. The Particle Accelerator community uses Pearson Current Monitor for a variety of applications in the area of high energy physics. These include measuring current in pulse power modulators, particle beams, and kicker magnets. Pearson Electronics has had a long and close relationship with all of the high energy physics laboratories throughout the world. The first Pearson Current Monitor was developed to measure the pulse-current in the pulse modulator of the Mark III accelerator at Stanford in 1950. Contact us for more information.

Surge Current Testing.  Pearson Wide-Band Current Probes measure surge and in-rush currents for EMC and other industries. A typical requirement is an 8×20, or 10×350, microsecond single shot pulse with current amplitudes greater than a kilo amp. The typical Pearson wide-band current probe will have a 0.01 V/A transfer impedance, or less, for this application. Pearson Electronics enjoys close relationships with most of the surge testing equipment manufactures and provides wide band current probes for use with their equipment.

Contact us for more information on any Pearson Current Monitor or go to

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Tel: 01635 30345,

Fax No: 01635 32630,