Teknik Dasar Listrik Telekomunikasi

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TEKNIK DASAR LISTRIK TELEKOMUNIKASI Contoh:Belitankawatronggaudaramemilikikerapatan2.500A/m,Hitungbes arflukmagnetnya,biladiketahuiµ 0 =1,257. 10 -6 Wb/Am Jawaban: B=µ 0 .H B=1,257. 10 -6 Wb/Am. 2500A/m=0,00314T=3,14mT Contoh:Besitoroidmempunyaikeliling0,3 meterdan luaspenampang1cm 2 . Toroidadililitkankawat600belitandialiriarussebesar100mA.Agardiperolehfl ukmagnetsebesar60µWbpadatoroidatsb.Hitung a)kuatmedanmagnetb)kerapatanflukmagnet c) permeabilitasabsolut dand)permeabiltasrelatifbesi. Jawaban: 7.5.2.KurvaMagnetisasi Faktor penting yang menentukan perubahanpermeabiltasbahanadalah: jenisbahan danbesarnyagayagerak magnetik yangdigunakan. Berdasarkankurvamagnetisasi gambar-7.14untukmendapatkan kerapatanfluk1Tesladiperlukankuat medanmagnet370A/m.Jikakerapatan flukdinaikkan1,2Tesladiperlukankuat medan magnet600A/m. 16
TEKNIK DASAR LISTRIK TELEKOMUNIKASI Gambar 7.14 Kurva magnetisasi Tabel7.1Permeabilitas Media µ Hampaudara µ=1 Udara Paramagnetik, Aluminium,Krom µ1 µ>1 Ferromagnetik,Besi,Nikel µ≥1,...10 5 Diamagnetik,tembaga W µ
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Teknik Dasar Listrik Telekomunikasi

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