Gangguan éléktromagnétis: Béda antarrépisi
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m bot Nambih: ru:EMI (физический термин) |
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Baris ka-5:
== Kalonggaran ==
Hal penting pikeun nurunkeun EMI nyaeta: make [[kapasitor]] bypass atawa "decoupling" dina unggal alat (divais) aktip (dihubungkeun ka panyadia daya, sadeukeut-deukeutna kana alat), ngadalikeun wanci naek ''(risetime control)'' kana sinyal-sinyal nu gancang ''(high-speed signal)'' make [[resistor]] seri, sarta nyaring [[pin panyadia daya IC|V<sub>CC</sub>]]. Ngalindungan ''(shielding)'' biasana mangrupakeun pakarang pangpandeurina lamun sakabeh tehnik geus teu mempan sabab dibutuhkeun beaya tambahan lamun kudu make [[gasket]] [[Frekuensi radio|RF]] jeung sajabana.
{{tarjamahkeun|Inggris}}iki piye to kok nggawe boso sundo..??
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Efisiensi radiasi gumantung kana luhur handapna saluhureun taneuh atawa widang daya (dina RF sarua wae) sarta panjang pondokna konduktor nu patali jeung panjang gelombang komponen sinyal (fundamental, harmonis atawa transient (overshoot, undershoot atawa ringing)). Dina frekuensi handap, saperti 133 [[MHz]], radiasi ukur ngaliwatan kabel I/O; noise RF bisa asup kana widang daya sarta dikopel kana driver jalur ngaliwatan pin-pin V<sub>CC</sub> jeung ground. RF tuluy dikopel kana kabel ngaliwatan driver jalur kawas noise common-mode. Since the noise is common-mode, shielding has very little effect, even with [[differential pair]]s. The RF energy is capacitively coupled from the signal pair to the shield and the shield itself does the radiating. One cure for this is to use a [[braid-breaker]] to reduce the common-mode signal.
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