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Suppressor capacitors

Suppressor capacitors

Wherever there is a need to reduce electromagnetic interference, suppression or radio suppression capacitors are used. They are used for instance in mains filters to reduce the interference effect on the radio reception. For this purpose they direct to the neutral or ground conductor the high-frequency interference signals generated by electrical or electronic equipment. Or they short circuit the source of interference and thus reduce the electromagnetic interference. Furthermore, protective capacitors must protect the equipment against mains voltage spikes, and also suppress the wire-borne effects of the equipment on the supply network. Suppressor capacitors are offered as ceramic capacitors and metal-paper capacitors, and also as plastic film capacitors with polypropylene films (MKP capacitors) and polyester films (MKT capacitor) as dielectric. For surface mounting, currently only the ceramic variant is available.

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