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Construction
6. PCB pins
SK2 : 2X
SK6 : 2X
SK3 : 3X
SK7 : 2X
SK4 : 3X
SK8 : 2X
SK5 : 3X
7. Ceramic Capacitors
C ...
C2
: 100nF (104, u1)
C3
: 100nF (104, u1)
C5
: 100nF (104, u1)
C9
: 100nF (104, u1)
C10 : 100nF (104, u1)
C11 : 100nF (104, u1)
C12 : 100nF (104, u1)
6
8. Electrolytic capacitor.
Watch the polarity !
C1 : 470µF/25V
C4 : 100µF
C6 : 4µ7
C7 : 4µ7
C8 : 4µ7
C13 : 100µF
9. Transistors
T1 : BC557
T2 : BC547
10. LED. Watch the polarity!
LD1
CATHODE
LD1 : 3mm Red.
11. Voltage regulator
VR1 : UA7806
C...
12. DC - Jack
SK1 : 8 - 15VDC (power supply)
13. Microphone
MIC1 : M300
VR...
MIC1
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