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Portable detector

Kristal Checker – Krystal Detector circuit using BC107

Kristal Checker - Krystal Detector circuit

Kristal Checker - Krystal Detector circuit

Kristal Checker – Krystal Detector circuit using BC107

Portable detector

R1 ………….. 39K ohm
R2 ………….. 1K ohm
R3 ………….. 100K ohm
C1 ………….. 680pF
C2 ………….. 150pF
C3 ………….. 1K pF
C4 ………….. 4,7K pF
TR1 …………. BC107
TR2 …………. BC107
D1 ………….. 1N60
D2 ………….. 1N60
LED …………. Hijau
PS ………….. Push Switch
Battery 9V