Kwibhodi yePCB, sihlala sisebenzisa amacandelo aphambili asetyenziswa rhoqo, amacandelo aphambili kwisekethe, amacandelo aphazamiseka ngokulula, amacandelo ombane aphezulu, amacandelo exabiso le-calorific ephezulu kunye namanye amacandelo e-heterosexual abizwa ngokuba ngamacandelo akhethekileyo. Uyilo lokutyelela la macandelo akhethekileyo lufuna uhlalutyo olucokisekileyo. Ngenxa yokuba ukubekwa ngokungafanelekanga kwezi nxalenye ezikhethekileyo kunokukhokelela kwiimpazamo zokuhambelana kwesekethe kunye neempazamo zengqibelelo yomqondiso, okukhokelela ekubeni yonke ibhodi yesekethe ye-PCB ayikwazi ukusebenza.
Xa uyila indlela yokubeka iindawo ezikhethekileyo, qala uqwalasele ubungakanani bePCB. Xa ubukhulu be-PCB bukhulu kakhulu, umgca wokushicilela ude kakhulu, i-impedance yanda, ukuxhathisa okomileyo kuyancipha, kwaye iindleko zonyuswa. Ukuba incinci kakhulu, ukutshatyalaliswa kobushushu akulungile, kwaye imigca esondeleyo iyakwazi ukuphazamiseka.
Emva kokumisela ubungakanani bePCB, misela indawo yesikwere yamacandelo akhethekileyo. Ekugqibeleni, onke amacandelo esekethe acwangciswa ngokweyunithi yokusebenza. Isikhundla samalungu akhethekileyo kufuneka silandele le migaqo ilandelayo xa kulungiselelwa:
Umgaqo woyilo lwamalungu akhethekileyo
1. Nciphisa umdibaniso phakathi kwamacandelo aphezulu-frequency kangangoko kunokwenzeka ukunciphisa iiparamitha zabo zokusasaza kunye nokuphazamiseka kombane phakathi komnye nomnye. Amacandelo anokuchaphazeleka akufuneki asondelelane kakhulu, kwaye amagalelo kunye neziphumo kufuneka zibe kude kangangoko.
(2) Amanye amacandelo okanye iingcingo zinokuba nomehluko ophezulu, ngoko ke umgama phakathi kwabo kufuneka unyuswe ukuze ugweme isiphaluka esifutshane ngengozi esibangelwa ukukhutshwa. Amacandelo ombane aphezulu kufuneka abekwe kude kangangoko ngaphandle kokufikelela ezandleni.
3. Amacandelo anobunzima obungaphezu kwe-15g inokulungiswa kunye ne-bracket kwaye emva koko i-welded. La macandelo anzima kwaye ashushu akufanele abekwe kwibhodi yesekethe, kodwa kufuneka abekwe kwibhokisi esezantsi yebhokisi, kwaye kufuneka athathele ingqalelo ukutshatyalaliswa kobushushu. Gcina iindawo ezishushu kude neendawo ezishushu.
4. Ukulungelelaniswa kwamacandelo ahlengahlengiswayo njengama-potentiometers, i-inductors eguquguqukayo, i-variable capacitors kunye ne-microswitches, iimfuno zesakhiwo sebhodi yonke kufuneka ziqwalaselwe. Ukuba isakhiwo sivumela, ezinye iitshintshi ezisetyenziswa ngokuqhelekileyo kufuneka zibekwe kwindawo efikeleleka lula kwisandla. Ukucwangciswa kwamacandelo kufuneka kulinganiswe, kuxinene, kwaye kungabi nzima kunophezulu.
Impumelelo yemveliso, enye kukunikela ingqalelo kumgangatho wangaphakathi. Kodwa ngokuqwalasela ubuhle jikelele, zombini iibhodi PCB ngokwentelekiso ogqibeleleyo ukuze babe iimveliso ngempumelelo.
Ixesha lokuposa: Mar-22-2024
