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Ukukhethwa Kwezihluzo ezahlukeneyo

Ngokweempawu zomthombo wophazamiseko, uluhlu lwamaza, i-voltage kunye ne-impedance kunye nezinye iiparamitha kunye neempawu zomthwalo weemfuno, ukhetho olufanelekileyo lwezihluzi, ngokubanzi ziqwalasela:
Okokuqala, kuyafuneka ukuba isihluzi sokuphazamiseka kwe-electromagnetic sinokuhlangabezana neempawu zokuthomalalisa kunye neemfuno zokulahleka kokufakwa kwemfuno yomthwalo ngaphakathi kwebhendi ehambelanayo yokusebenza, kwaye ukuba isixa sokucoca isihluzi asikwazi ukuhlangabezana neemfuno, sinokusetyenziswa kwi-multistage. Ukufumana ukuthomalalisa okuphezulu kunenqanaba elinye, i-cascade yesihluzi esahlukileyo, unokufumana iimpawu ezintle zokuthomalalisa kunye nelahleko yokufaka kwibhendi yebroadband.

Okwesibini, ukuze kuhlangatyezwane nomthamo wokusebenza kwesekethe yomthwalo kunye nemfuneko yokucinezela ukuphindaphindeka kweemfuno, ukuba i-frequency kufuneka icinezelwe kwaye i-frequency yemiqondiso eluncedo isondele kakhulu, kuyimfuneko ukuba ube neempawu ezinqabileyo kakhulu icebo lokucoca ulwelo, ukwenzela ukuhlangabezana nocinezelo lophazamiseko lwamaza okucoca ngaphandle, vumela kuphela usebenziso lweemfuno zophawu lwamaxesha amaninzi.Okwesithathu, kwi-frequency efunekayo, i-impedance ye-EMI filter RFI filter kufuneka ihambelane ne-impedance yomthombo wokuphazamiseka kunye ne-impedance yomthwalo eqhagamshelwe kuyo, kwaye ukuba umthwalo unzima kakhulu, ukukhutshwa kwemveliso yokucoca amandla kufuneka kube nokuchasana okuphantsi, kwaye ukuba Unikezelo lwamandla okanye uphazamiseko lomthombo wothintelo luyimpembelelo ephantsi, imveliso yemveliso yokucoca kufuneka ibe nokumelana okuphezulu.

Ukuba i-impedance yamandla okanye i-impedance yomthombo wokuphazamiseka akwaziwa okanye utshintsho kuluhlu olukhulu, kunzima ukufumana iimpawu zokucoca ezizinzileyo, ukuze ufumane icebo lokucoca lineempawu zokucoca ezizinzileyo, zinokuba kwigalelo lokucoca kunye nemveliso, ngexesha elifanayo kwaye emva koko i-resistor esisigxina.

Okwesine, icebo lokucoca kufuneka libe nokumelana noxinzelelo oluthile, ngokutsho kobonelelo lwamandla kunye nokuphazamiseka komthombo wombane olinganisiweyo ukukhetha isihluzo samandla, ukuze sibe nombane ophakamileyo ngokwaneleyo, ukuqinisekisa ukuba zonke iimeko zokusebenza ezilindelekileyo zinokusebenza okuthembekileyo. , inokumelana nempembelelo yegalelo ngokukhawuleza uxinzelelo oluphezulu.Isihlanu, isihluzi samandla sivumela ukudlula ukuba kuhambelane nesantya sangoku esisebenza ngokuqhubekayo kwisekethe.

Isantya esiphezulu esisisigxina siya kwandisa umthamo kunye nobunzima be-EMI filter, kwaye i-low fixed current iya kunciphisa ukuthembeka kwe-EMI filter.Isithandathu, isihluzi samandla kufuneka sibe namandla aneleyo omatshini, isakhiwo esilula, ubunzima obulula, ubungakanani obuncinci, kulula ukuyifaka, ikhuselekile kwaye inokuthenjwa.


Ixesha lokuposa: Mar-30-2021