Setelah Posting saya tentang jam digital disini, ternyata jika kita membuat jam digital dengan seven segmen kecil ukuran 0,56 " tidak jadi masalah karena seven segmen tersebut bekerja pada tegangan 3 Volt, tapi jika kita menggunakan seven segmen besar, yang tegangan kerjanya sekitar 9-10 volt, rangkaian tidak mampu untuk menyalakan 7 segmen tersebut.
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berikut skema modifikasinya, dengan menambahkan transistor 9013 dan 9012 atau transistor sembarang yang penting NPN dan PNP dirangkai seperti gambar dibawah ini.
untuk rangkaian mesin jam dapat diunduh disini
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Proses Pembuatan Jam digital dengan seven segmen gedhe
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tinggi sekitar 7 Cm, tegangan kerja 9 - 10 Volt
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Pemasangan transistor driver
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rangkaian mesin Jam nya
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uji coba untuk menyalakan 2 digit 7 segmen
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susunan kabel dicatat biar tidak lupa
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Hasil Akhirnya
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reff : http://www.rokhmad.com/2016/03/membuat-jam-digital-dengan-seven-segmen.html
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