Uma kufanele kususwe ithusi elifile PCB umklamo?

Abanye abantu bathi kufanele isuswe ngenxa yezizathu ezilandelayo: 1. Izinkinga ze-EMI zizobangelwa. 2, khulisa ikhono lokuphazamisa. 3. Ithusi elifile alisizi ngalutho.

Abanye abantu bathi kufanele igcinwe, izizathu mhlawumbe: 1. Kwesinye isikhathi isikhala esikhulu esingenalutho asibukeki sihle. 2, ukwandisa izakhiwo mechanical ibhodi, ukugwema lo mkhuba eguqa engalingani.

Okokuqala, asifuni ukufa ithusi (isiqhingi), ngoba isiqhingi lapha ukwakha umphumela we-antenna, uma amandla emisebe azungeze ulayini mkhulu, azothuthukisa imisebe ezungeze; Futhi kuzokwakha umphumela wokwamukelwa kwe-antenna, kuzokwethula ukuphazanyiswa kwamandla kagesi entanjeni ezungezile.

Okwesibili, singasusa ezinye iziqhingi ezincane. Uma sifuna ukugcina isembozo sethusi, isiqhingi kufanele sixhunywe kahle kwi-GND ngembobo yomhlabathi ukuze senze isihlangu.

Okwesithathu, imvamisa ephezulu, ukuxhunywa kwamandla okusatshalaliswa ebhodini lesifunda eliphrintiwe kuzosebenza, lapho ubude bungaphezu kwe-1/20 yemvamisa yomsindo ehambelana nobude bebanga, kungakhipha umphumela we-antenna, umsindo uzokwethula ngentambo, uma kukhona zigqoke okubi ithusi egqoke ku-PCB, okugqokiwe ithusi kwaba yithuluzi lokudlulisa umsindo, ngakho-ke, kumjikelezo omkhulu wesekethe, ungacabangi, Umhlabathi ndawana thize oxhunywe nomhlabathi, lona yi “ground”, kumele ube ngaphansi kwezikhala ezingama-λ / 20, emgodini wezintambo, naphansi kwebhodi le-multilayer “grounding”. Uma ukumbozwa kwethusi kuphathwa kahle, ukumbozwa kwethusi akugcini ngokwandisa okwamanje, kodwa futhi kudlala indima ebili ekuvikeleni ukuphazamiseka.

Okwesine, ngokumba umgodi womhlaba, gcina isembozo sethusi sesiqhingi, hhayi nje kuphela esingadlala indima ekuvikeleni ukuphazanyiswa, kepha futhi singavimbela ukuguqulwa kwe-PCB.