Velleman projects K2604 Assembly instructions - Manual (Page 4)

4
IC1 : 14p
3. IC socket. Watch the
position of the notch!
R1 ... R6 : 3M3 (3 - 3 - 5 - B)
R7 : 10K (1 - 0 - 3 - B)
R8 : 100 (1 - 0 - 1 - B)
1. Resistors
R...
Construction
D1 : 1N4148
D2 : 1N4148
2. Diodes. Watch the polarity!
D...
CATHODE
R...
2mm
C3 : 1.5nF (152)
4. Capacitor
RV1 ... RV3 : 1M
5. Trimmer
VDC (2x) " DC power supply"
PB (2x) " Push button"
LS(2x) " Loudspeaker"
6. PCB tab
C1 : 100µF
C2 : 10µF
C4 : 2.2µF
C..
7. Electrolytic Capacitors.
Watch the polarity !