Velleman projects K2633 Assembly instructions User Manual
Page 5
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![background image](/manuals/259478/5/background.png)
5
Construction
D1 : 1N4148
D2 : 1N4148
D3 : 1N4148
D4 : 1N4148
1. Diodes. Watch the polarity !
D...
CATHODE
R1 : 56
(5 - 6 - 0 - B - 9)
R2 : 56
(5 - 6 - 0 - B - 9)
R3 : 56
(5 - 6 - 0 - B - 9)
R4 : 56
(5 - 6 - 0 - B - 9)
R5 : 820 (8 - 2 - 1 - B)
R6 : 820 (8 - 2 - 1 - B)
R7 : 820 (8 - 2 - 1 - B)
R8 : 820 (8 - 2 - 1 - B)
RX : 820 (8 - 2 - 1 - B) (4x)
2. Resistors
R...
LD1 : 5mm RED
LD2 : 5mm RED
LD3 : 5mm RED
LD4 : 5mm RED
4. LEDs. Watch the polarity!
LD1
CATHODE
T1 : BC557B
T2 : BC557B
T3 : BC557B
T4 : BC557B
3. Transistors.
NC (4x)
NO (4x)
C (4x)
+ VDC (2x)
- VDC
1
2
3
4
GND
5. PCB tabs.
RY1
RY2
RY3
RY4
6. Relays
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