Velleman projects K8023 Assembly instructions - Manual (Page 15)

15
16. Schematic diagram (Control section)
Schematic diagram
SK9
GND2
GND2
GND2
Vin 1
GN
D
2
Vout
3
VR2
UA78L05
GND2 GND2
RA0
17
RA1
18
RA2 1
RA3
2
RB0
6
RB1
7
RB2
8
RB3
9
RB4
10
RB5 11
RB6
12
RB7
13
VSS
5
MCLR/VPP
4
OSC1/CLKIN 16
T0CKI
3 OSC2/CLKOUT
15
VD
D
14
IC4
VK8023 (PIC16C54)
GND2
GND2 GND2
GND2
GND2
GND2
R28
220/0.6W R16
1K
R17
4K7
R18
10K
R19
10K
R20
10K
R21
10K
R22
10K
R23
10K
R24
10K
R25
10K
R26
10K
R27
10K
C13
100n
C14
10µ
C11
15p
C10
15p
C12
100n
C15
470µ/25-35V
T2
BC547
X2
4MHz
D7
1N4007
+
LD12
LED3RL
SK14 SK13 SK12 SK11 SK10
1 2 3 4 5 6 7 8 9 10
-
COM
VTX