Saelig releases mini burst generator kit

These EMC tools can be applied to quickly and easily check and optimise assemblies with regard to their interference immunity. As part of the set are P11, P12, and P21 handheld injectors. 

The P11 Mini Burst Field Generator creates a magnetic disturbance field with a diameter of 3mm at its tip. Localised pulses can be transmitted via this field on to the surface of printed circuit boards and components, facilitating the detection of weak points in conducting paths, components, and component connectors.

The P12 Mini Burst Field Generator creates a magnetic disturbance field which functions like a coupling clamp. The disturbance current can be coupled into single conducting paths, IC pins, SMD components, and thin or flat cables.

The P21 Mini Burst Field Generator creates an electric field at its tip for coupling into conducting paths, wires, pins, and components, especially SMD components like resistors and capacitors. Single conductors of flat cables or plug contacts can also be evaluated.

For reliable operation, electronic and electrical devices and systems should be unaffected by electromagnetic phenomena. Electronic modules have differing immunities to disturbances, which is typically due to specific layout issues and IC sensitivities. Weak spots often depend on the grounding and power rail geometry, as well as the type and manufacturer of the ICs employed.

Circuit weaknesses can be exactly identified and pinpointed by using Burst and ESD Sensitivity Testing. Burst Testing evaluates devices for tolerating imposed high voltage spikes with high repetition frequencies and short rise time, but with the low energy of transients.

When searching for circuit design weaknesses and vulnerabilities, two approaches are required: first the magnetically sensitive (B-pulser/red) and then the electrically (E-pulser/blue) sensitive weak areas must be investigated. Generally, a weak spot is either only magnetically or electrically sensitive, but both types of weakness are significant.

The disturbances from both mechanisms can combine and are difficult to separate, and, furthermore, both types of weaknesses require different EMC solutions. The localisation and identification of the types of weak spots is where the E- or B-field sources from the Mini Burst Field Generators becomes invaluable during product design. Separate magnetic (P11 and P12) and electric (P21) coupling allows an optimal implementation of EMC countermeasures for their respective weaknesses.