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The primary absorber substrate relies on expanded polystyrene , which is volumetrically loaded with lossy supplies, and environmentally pleasant fire retardants. Advanced uniform loading in the manufacturing process leads to superior RF efficiency a wonderful absorption uniformity. The closed cell construction of this kind of absorber makes it suitable for use even in high humidity environments.

Chin Strap Generates Electricity From Jaw Movements

An different polyurethane absorber typically 36 inches in depth, EHP 36, can be used with improved excessive frequency efficiency due largely to the elevated material size. But, with out the advantage of the matching ferrite materials used in the hybrid, the polyurethane solely absorber suffers from lowered low frequency efficiency. Figure 3 reveals the everyday performance of this material and its compliance with the CISPR 25 restrict. One of essentially the most efficient and value efficient is a polystyrene primarily based absorber that combines a excessive-efficiency ferrite tile with a polystyrene EMC absorber, having 60cm x 60cm base and 60cm top.

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