Velleman К8089 - Manual (Page 6)

6
Construction

R1 : 100K (1 - 0 - 4 - B)
 R2 : 10 (1 - 0 - 0 - B)
 R3 : 22K (2 - 2 - 3 - B)
 R4 : 22K (2 - 2 - 3 - B)
 R5 : 240 (2 - 4 - 0 - 0 - 1)
 R6 ... R37 : 220 (2 - 2 - 1 - B) !
 R38 : 1K (1 - 0 - 2 - B)
 R39 ... R42 : 10K (1 - 0 - 3 - B) !
 R44 : 220 (2 - 2 - 1 - B)
 R45 : 2K2 (2 - 2 - 2 - B)
 R46 : 10K (1 - 0 - 3 - B)
1. Resistors.
R...
Hint: if you want the mount the clock against a wall, you can use the unstuffed
PCB as a template to mark the drill holes.

D1 : 1N4007
 D2 : 1N4007
 D3 : 1N4007
 D4 : 1N4007
 D5 : BAT85
 D6 : BAT85
 D7 : 1N4148
2. Diodes (check the polarity)
C A T H O D E
D ...
 ZD1 : 4V3
 ZD2 : 4V3
 ZD2 : 4V3
 ZD3 : 4V3
3. Zener diodes (check the polarity)
CATHODE
ZD...
Hint: resistors can be soldered at compo-
nent side of the board.

IC1 : 14p
 IC2 : 16p
 IC3 : 16p
 IC4 : 16p
 IC5 : 16p
4. IC sockets. Watch the position
of the notch!
IC...
1
 C1 ... C11 : 100nF (104)
 C13 : 100nF (104)
5. Capacitors
c...

SW1 : Open / closed
6. Switches
SW1.
Hi nt: mount a screw connector if remote
selection is needed, see step 12.
H8089IP'1_rev3.pub
page 6 Friday, March 02, 2012 15:01