Velleman К8089 - Manual (Page 7)

7
Construction
 T1 : BC547
 T2 : BC547
7. Transistors
T1
 VR1 : UA7808
 VR2 : UA78L05
8. Voltage regulator
 SW2 : Sign on/off
 SW3 : Hours +
 SW4 : Minutes +
10. Push buttons
 E1 : CR2032 (3V)
9. Battery holder

SK1 : 2p power 12VAC
 SK2 : 3p Temp. sensor
! If remote selection is needed :

SW1 : 2p Open/closed
12. Terminal blocks

C12 : 470µF / 25V
13. Electrolytic capacitor.
Watch the polarity !
C...
-
VR...
 IC1 : VK8089
(programmed PIC16F630-I/P)
 IC2 : 74HC595
 IC3 : 74HC595
 IC4 : 74HC595
 IC5 : 74HC595
15. IC's. Watch the position of the
notch!
2pins:
 SK3 : 12h/24h
 SK4 : °C/°F
 SK5 : Clock/clock+temp
3pins:
 hh:mm / hh.mm
11. Pinheaders
Make sure that the heat sink does
not touch C12 !
14. Heat sink
H8089IP'1_rev3.pub
page 7 Friday, March 02, 2012 15:01