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6
Construction & connection
Choose C1
:
C1 : 1n2 (122)
C1 : 3n3 (332)
Experiment for best result.
C2 : 47nF (473)
5. Capacitors.
C...
LD1 : 5mm RED
7. LED. Watch the polarity!
LD1
CATHODE
T1 : BC547B
T2 : BC547B
T3 : BC547B
6. Transistors.
R1 : 330 (3 - 3 - 1 - B)
R2 : 470 (4 - 7 - 1 - B)
R3 : 470 (4 - 7 - 1 - B)
R4 : 2K7 (2 - 7 - 2 - B)
R5 : 10K (1 - 0 - 3 - B)
4. Resistors
R...
RV1 : 2K5
RV2 : 100
8. Trim potentiometers
SW1
9. Push button