5 poin
OLEH NAMA STAMBUK KELOMPOK ASISTEN
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LABORATORIUM PENDIDIKAN FISIKA FAKULTAS KEGURUAN DAN ILMU PENDIDIKAN UNIVERSITAS TADULAKO
I.
LEMBAR KERJA MAHASISWA DI LABORATORIUM (LKM) PERCOBAAN 3 PENYEARAH DAN CATU DAYA Waktu dan Tempat (3 poin) Hari/tanggal
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Pukul
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Tempat
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II. Hasil Pengamatan (15 poin) 1. Penyearah setengah gelombang
Input No.
F (Hz)
Volt/div (v)
Time/div (s)
PG (div)
TG (div)
F (Hz)
Volt/div (v)
Time/div (s)
PG (div)
TG (div)
1 2 3
Output No. 1 2 3
NST osiloskop Kalibrasi
= =
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2. Penyearah gelombang penuh
Input No.
F (Hz)
Volt/div (v)
Time/div (s)
PG (div)
TG (div)
f (Hz)
Volt/div (v)
Time/div (s)
PG (div)
TG (div)
1 2 3
Output No. 1 2 3
NST osiloskop = Kalibrasi = 3. Penyearah gelombang penuh bertapis
Input No.
F (Hz)
Volt/div (v)
Time/div (s)
PG (div)
TG (div)
F (Hz)
Volt/div (v)
Time/div (s)
PG (div)
TG (div)
1 2 3
Output No. 1 2 3
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Halaman 3
NST osiloskop Kalibrasi
= =
Keterangan : F = frekuensi PG = panjang gelombang TG = tinggi gelombang III. Analisa Data (40) 𝑽𝒑𝒑 = 𝑻𝑮 𝒙 𝑽𝒐𝒍𝒕/𝒅𝒊𝒗 𝒙 𝒌𝒂𝒍𝒊𝒃𝒓𝒂𝒔𝒊 𝑽𝒓𝒎𝒔 = 𝟏/𝟐√𝟐 𝒙 𝑽𝒑𝒑 𝑻 = 𝑷𝑮 𝒙 𝑻𝒊𝒎𝒆/𝒅𝒊𝒗 𝟏 𝒇= 𝑻
1. Untuk Penyearah setengah gelombang input 1. Perlakuan ke-1 𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 = = 𝒇 = =
Hz
2. Perlakuan ke-2
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Halaman 4
𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 = = 𝒇 = =
Hz
3. Perlakuan ke-3 𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 = = 𝒇 = =
Hz
Output 1. Perlakuan ke-1 𝒇
=
Hz
𝑽𝒑𝒑
= = 𝑽𝒓𝒎𝒔 = = 𝑻 = = 𝒇 = =
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2. Perlakuan ke-2 𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 = = 𝒇 = =
Hz
3. Perlakuan ke-3 𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 = = 𝒇 = =
Hz
2. Untuk Penyearah gelombang penuh Input 1. Perlakuan ke-1 𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 = =
Laboratorium Pendidikan Fisika
Hz
Halaman 6
𝒇
= =
2. Perlakuan ke-2 𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 = = 𝒇 = =
Hz
3. Perlakuan ke-3 𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 = = 𝒇 = =
Hz
Output 1. Perlakuan ke-1 𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = =
Laboratorium Pendidikan Fisika
Hz
Halaman 7
𝑻 𝒇
= = = =
2. Perlakuan ke-2 𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 = = 𝒇 = =
Hz
3. Perlakuan ke-3 𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 𝒇
Hz
= = = =
3. Untuk Penyearah gelombang penuh bertapis Input 1. Perlakuan ke-1
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Halaman 8
𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 = = 𝒇 = =
Hz
2. Perlakuan ke-2 𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 = = 𝒇 = =
Hz
3. Perlakuan ke-3 𝒇 𝑽𝒑𝒑
= =
Hz
= 𝑽𝒓𝒎𝒔 = = 𝑻 = = 𝒇 = =
Output
Laboratorium Pendidikan Fisika
Halaman 9
1. Perlakuan ke-1 𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 = = 𝒇 = =
Hz
2. Perlakuan ke-2 𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 = = 𝒇 = =
Hz
3. Perlakuan ke-3 𝒇 𝑽𝒑𝒑
= = = 𝑽𝒓𝒎𝒔 = = 𝑻 = =
Laboratorium Pendidikan Fisika
Hz
Halaman 10
𝒇
= =
IV. Analisis Konsep/Pertanyaan-pertanyaan (30 poin) 1. Tuliskan definisi penyearah ! .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. 2. Jelaskan fungsi alat dan bahan yang digunakan sesuai dengan percobaan yang dilakukan ! ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ...................................................................................................................... 3. Jelaskan prinsip kerja penyearah setengah gelombang ! .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. ..............................................................................................................................
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……………………………………………………………………………… ……………………………………………………………………………… ……………………………………………………………………………… 4. Gambarkan sinyal output dari rangkaian penyearah setengah gelombang dan jelaskan proses terbentuknya sinyal output tersebut ! .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. 5. Jelaskan prinsip kerja penyearah gelombang penuh ! ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ……………………………………………………………………………… ………………………………………………………………………………
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…………………………................................................................................ ........................................................................................................................ ……………………………………………………………………………… 6. Gambarkan sinyal output dari rangkaian penyearah gelombang penuh dan jelaskan proses terbentuknya sinyal output tersebut ! ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... 7. Jelaskan prinsip kerja penyearah gelombang penuh bertapis ! ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... .......................................................................................................................
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....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... 8. Gambarkan sinyal output dari rangkaian penyearah gelombang penuh bertapis dan jelaskan proses terbentuknya sinyal output tersebut ! .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... .......................................................................................................................
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....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... 9. Jelaskan pengaruh frekuensi, volt/div dan time/div terhadap gelombang output sesuai dengan data yang diperoleh ! .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. ....................................................................................................................... ....................................................................................................................... 10. Berapa nilai frekuensi rata-rata yang Anda peroleh berdasarkan perhitungan? Apakah nilai yang diperoleh sama dengan frekuensi pada literatur ? Jelaskan! ..............................................................................................................................
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.............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... ....................................................................................................................... 11. Jelaskan apa saja kesalahan-kesalahan yang terjadi pada saat melakukan percobaan ini! Jelaskan pula cara mengatasi kesalahan tersebut! .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. ..............................................................................................................................
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V. Kesimpulan (7 poin): .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. ..............................................................................................................................
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Palu, ………………………….., Mahasiswa
…………………………… Stambuk : Menyutujui: Koordinator Asisten Kelas
Asisten Praktikum
………………………………
…………………………………
Penilaian Asisten
Laboratorium Pendidikan Fisika
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