PRAKTIK ELEKTRONIKA LEMBAR JAWAB 2
Topik 2. Transistor Sebagai Saklar
Nama
NIM
: ……………………………………….
: ……………………………………….
A. Gambar Rangkaian
+5 Volt
+5 Volt
+
B
mA
A
-
-
mA
+
BC 557
4K7
SAKLAR
LED
330Ω
330Ω
LED
+
B
+
A
SAKLAR
mA
-
4K7
mA
BC 547
-
Gambar 1
Gambar 2
E B
Transistor tampak bawah
C
B. Petunjuk
1. Pastikan LED dalam keadaan baik dan bisa menyala
2. Pastikan Transistor dalam keadaan baik, uji dulu dengan menggunakan Ohm x 1K
3. Pada saat TR-ON, secara teori untuk bahan Si, VBE = 0,7 Volt, VCE = 0 Volt dan VLED = 1,8 Volt
4. Pengukuran IC dan IB harus diawasi pengajar, karena beresiko meter rusak
5. Prosentase perbedaan hasil teori dan praktek = (|Teori – Praktek|/Teori) x 100%
C.
Pertanyaan
Tentukan posisi saklar pada saat LED dalam keadaan menyala pada masing-masing gambar rangkaian
diatas ?
D. Tabel Untuk Gambar 1 Pada Saat Posisi Saklar di Posisi A
Yang
Hasil Pengukuran
Hasil Perhitungan
Diukur
(Praktek)
(Teori)
Prosentase Perbedaan
Teori dan Praktek
VBE
VCE
IB
IC
VLED
Didik Hariyanto – Praktik Elektronika
E.
Tabel Untuk Gambar 1 Pada Saat Posisi Saklar di Posisi B
Yang
Hasil Pengukuran
Hasil Perhitungan
Diukur
(Praktek)
(Teori)
Prosentase Perbedaan
Teori dan Praktek
VBE
VCE
IB
IC
VLED
F.
Tabel Untuk Gambar 2 Pada Saat Posisi Saklar di Posisi A
Yang
Hasil Pengukuran
Hasil Perhitungan
Diukur
(Praktek)
(Teori)
Prosentase Perbedaan
Teori dan Praktek
VBE
VCE
IB
IC
VLED
G. Tabel Untuk Gambar 2 Pada Saat Posisi Saklar di Posisi B
Yang
Hasil Pengukuran
Hasil Perhitungan
Diukur
(Praktek)
(Teori)
Prosentase Perbedaan
Teori dan Praktek
VBE
VCE
IB
IC
VLED
H. Jawaban Pertanyaan
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Didik Hariyanto – Praktik Elektronika
Nama
NIM
: ……………………………………….
: ……………………………………….
A. Gambar Rangkaian
+5 Volt
+5 Volt
+
B
mA
A
-
-
mA
+
BC 557
4K7
SAKLAR
LED
330Ω
330Ω
LED
+
B
+
A
SAKLAR
mA
-
4K7
mA
BC 547
-
Gambar 1
Gambar 2
E B
Transistor tampak bawah
C
B. Petunjuk
1. Pastikan LED dalam keadaan baik dan bisa menyala
2. Pastikan Transistor dalam keadaan baik, uji dulu dengan menggunakan Ohm x 1K
3. Pada saat TR-ON, secara teori untuk bahan Si, VBE = 0,7 Volt, VCE = 0 Volt dan VLED = 1,8 Volt
4. Pengukuran IC dan IB harus diawasi pengajar, karena beresiko meter rusak
5. Prosentase perbedaan hasil teori dan praktek = (|Teori – Praktek|/Teori) x 100%
C.
Pertanyaan
Tentukan posisi saklar pada saat LED dalam keadaan menyala pada masing-masing gambar rangkaian
diatas ?
D. Tabel Untuk Gambar 1 Pada Saat Posisi Saklar di Posisi A
Yang
Hasil Pengukuran
Hasil Perhitungan
Diukur
(Praktek)
(Teori)
Prosentase Perbedaan
Teori dan Praktek
VBE
VCE
IB
IC
VLED
Didik Hariyanto – Praktik Elektronika
E.
Tabel Untuk Gambar 1 Pada Saat Posisi Saklar di Posisi B
Yang
Hasil Pengukuran
Hasil Perhitungan
Diukur
(Praktek)
(Teori)
Prosentase Perbedaan
Teori dan Praktek
VBE
VCE
IB
IC
VLED
F.
Tabel Untuk Gambar 2 Pada Saat Posisi Saklar di Posisi A
Yang
Hasil Pengukuran
Hasil Perhitungan
Diukur
(Praktek)
(Teori)
Prosentase Perbedaan
Teori dan Praktek
VBE
VCE
IB
IC
VLED
G. Tabel Untuk Gambar 2 Pada Saat Posisi Saklar di Posisi B
Yang
Hasil Pengukuran
Hasil Perhitungan
Diukur
(Praktek)
(Teori)
Prosentase Perbedaan
Teori dan Praktek
VBE
VCE
IB
IC
VLED
H. Jawaban Pertanyaan
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Didik Hariyanto – Praktik Elektronika