VU Meter 3 LED Menggunakan LM339

Parts:


R1 100K 1/4W Resistor
R2 50K 1/2W Trimmer Cermet
R3 330K 1/4W Resistor
R4 1M2 1/4W Resistor
R5 470K 1/4W Resistor
R6,R7 500K 1/2W Trimmers Cermet
R8 1K5 1/4W Resistor
R9-R11 470R 1/4W Resistors
C1 47pF 63V Ceramic Capacitor
C2 100nF 63V Polyester Capacitor
C3 47µF 25V Electrolytic Capacitor
C4 1µF 25V Electrolytic Capacitor
D1 BZX79C5V1 5.1V 500mW Zener Diode
D2 1N4148 75V 150mA Diode
D3-D5 3mm. Yellow LEDs
IC1 LM339 Quad Voltage Comparator IC
SW1 SPST Slider Switch
B1 9V PP3
Clip for 9V PP3 Battery

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