Velleman К8091 User Manual

Page 6

Construction

(1) ASSEMBLY OF THE COMPONENT SIDE

ZD1 : 15V0

3. Zener diode (check the polarity)

CATHODE

ZD...

C1 : 100nF (104)

C2 : 100nF (104)

C3 : 100nF (104)

C4 : 10nF

(103)

C5 : 100pF (101)

5. Capacitors

c...

1/8W:

R1 : 100 (1 - 0 - 1 - B)

R2 : 100 (1 - 0 - 1 - B)

R3 : 100 (1 - 0 - 1 - B)

R4 : 100 (1 - 0 - 1 - B)

R5 : 100 (1 - 0 - 1 - B)

R6 : 100 (1 - 0 - 1 - B)

R7 : 100 (1 - 0 - 1 - B)

R13 : 10K (1 - 0 - 3 - B)

R14 : 10K (1 - 0 - 3 - B)

R16 : 10

(1 - 0 - 0 - B)

1/2W "metal film" :

R8 : 47

(4 - 7 - 0 - B - 9)

R9 : 10

(1 - 0 - 0 - B - 9)

R10 : 470K (4 - 7 - 4 - B - 9)

R11 : 470K (4 - 7 - 4 - B - 9)

R12 : 100K (1 - 0 - 4 - B - 9)

1/4W:

R15 : 220 (2 - 2 - 1 - B)

1. Resistors

R...

D1 : 1N4148

D2 : 1N4148

D3 : 1N4148

D4 : 1N4148

D5 : 1N4007

2. Diodes (check the polarity)

C A T H O D E

IC1 : 18p

Mind the position of the notch and shorten
the connection pins as short as possible
after soldering!

4. IC socket. Watch the position of
the notch!

IC...

D ...

F1 :

6. Fuse.

BUZ1

(3-6VDC/25mA)

7. Buzzer

BUZ...