Velleman projects K8050 Assembly instructions - Manual (Page 14)

14
Usually the open-collector outputs are used for controlling relays
(like our card K6714, Fig 5.0).
Figure 4.0 shows how to connect eventual relays. Its advisable to
use a separate power supply for the relays, rather than to branch off
from the power supply of the receiver.
Usage and connection
17. Usage and connection
-
+
K8050
8
+
VCOM
13
15
14
12
11
9
10
5
6
7
3
4
+V
2
1
VB
GND
VA
MAINS
6 ... 1
2v
/1
50
m
A
6 ... 1
2v
/1
50
m
A
MAINS
6 ... 1
2v
/1
50
m
A
FIG 4.0
K8050