Sabtu, 19 November 2011

Rangkaian Dioda | Penyearah setengah gelombang


Dioda adalah komponen elektronika berbahan semikonduktor (germanium, silikon) yang mempunyai karakteristik hanya dapat melewatkan arus forward saja dan menahan arus reverse atau sebagai penyearah yang dapat merubah arus bolak – balik mejadi arus searah.

Berikut akan dijelaskan salah satu aplikasi dari fungsi dioda yang dapat kita manfaatkan, yaitu sebagai penyearah setengah gelombang, seperti gambar berikut:

Rangkaian Dioda | Penyearah setengah gelombang

Pada gambar diatas sumber AC(Alterbating Current) atau sumber tegangan bolak balik disearahkan dengan menggunakan dioda, arus hanya dapat mengalir satu arah dibagian katoda sedangkan arus yang lewat di bagian anoda ditahan. perhatikan gelombang yang dihailkan gelombang negatif yang dihilangkan oleh dioda yang hanya melewatkan gelombang positif.

Untuk memperhalus tegangan keluaran, pada rangkaian dapat ditambahkan dengan kapasitor, seperti gambar dibawah ini

Rangkaian Dioda | Penyearah setengah gelombang

Semoga bermanfaat

51 komentar:

  1. Belajar Elektro memang dari Dasar,
    trims kawan infonya :D

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  2. Mas brow...
    I mau tanya, pada saat ditambah kapasitor apakah gelombang trsebut masih disebut setengah gelombang.?
    Atau gelombang = 0

    BalasHapus
    Balasan
    1. masih setengah gelombang...,
      cuma kalau pakai kapasitor tegangan keluarannya jadi lebih rata karena disimpan dulu di kapasitornya

      Hapus
    2. kapasitornya knp di asang paralel gan ?
      trus klo d pasang seri apa yg terjadi ??
      thx..

      Hapus
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