BOC Smootharc TIG 185 DC Manuale di servizio - Pagina 9
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Ver.1 Rev.1 . 0314
1.8
U9 control module board schematic
Pin
Description
1
DC+12V
2
GND
3
Not used
4
Voltage Feedback
5
2T/4T Preset Control
6
Given Control
7
Not used
8
Not used
9
GND
10
GND
11
Over-current Protection Monitoring
12
GND
13
Over-heat Protection Monitoring
14
GND
15
DC+24V
16
Not used
17
GND
18
SG3525 Shutdown Control
19
GND
20
GND
21
DC+24V
22
GND
23
SPWM Output
24
GND
25
SPWM Output
26
Not used
27
SPWM Output
28
GND
29
SPWM Output
30
DC+24V
31
GND
BOC Smootharc TIG 185 DC Service manual
9