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G-14
ELECTRICAL DIAGRAMS
INVER
TEC S
TT & S
TT II
ON 2 PLACE DECIMALS IS + .O2
WITH PUBLISHED STANDARDS
ON HOLES SIZES PER E-2056
SUPPLY
POWER
Ch'ge.Sht.No.
RESISTORS = Ohms (
CAPACITORS =
MFD
1A, 400V
DIODES =
BASE
DRIVE
2 AMP
S
ymmetric Gate D
rive Layout
UNLESS OTHERWISE SPECIFIED)
UNLESS OTHERWISE SPECIFIED)
(UNLESS OTHERWISE SPECIFIED)
ELECTRICAL SYMBOLS PER E1537
(
GENERAL INFORMATION
.022/50V
1/4W
NEGATIVE BIAS
HOLD - OFF
for
DARLINGTON
NUMBER.
DZ-
17
COMMON CONNECTION
R-
SUPPLY
LAST NO. USED
CHK.
VOLTAGE NET
LABELS
C-
D-
EARTH GROUND CONNECTION
POWER SUPPLY SOURCE POINT
MLD
NO.
SHT.
3
18
03/23/94
FRAME CONNECTION
DR.
DATE
13
SUP'S'D'G.
SCALE
NONE
EQUIP.
TYPE
SUBJECT
CLEVELAND, OHIO U.S.A.
THE LINCOLN ELECTRIC CO.
BLACK
PAIR
BLUE
MODULE
TWISTED
B
C
E
DARLINGTON
FILE: M17581_1AB
3.92K
R4
+V
1.50K
R3
D5
J13
4
J13
1
OCI1
HP2201
7
3
2
OCI1
Vcc
GND
HP2201
5
8
GND
50V
0.1
C14
3300
50V
C15
8A
400V
D1
8A
400V
D2
.5
5W
R1
8A
400V
D3
8A
400V
D4
J13
6
3300
50V
C12
J13
2
J13
5
C16
J13
3
GND
+V
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
ON 3 PLACE DECIMALS IS + .OO2
MATERIAL TOLERANCE ("t") TO AGREE
ON ALL ANGLES IS + .5 OF A DEGREE
UNLESS OTHERWISE SPECIFIED TOLERANCE
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
10VAC
R
6VAC
R
6
1
3
4
J13
NOTES :
+15V
1
3
J12
4
2
WINDING
TRANSFORMER
AUXILLARY
OFF = Darlington OFF
M 17581
STT CONTROL BOARD
1
K
ON = Darlington ON
1.50K
R2
+V
50V
0.1
C6
10W
2.7
R10
10.0
R6
D13
1N5402
S
G
D
100V
Q2
3300
50V
C9
1W
18V
DZ3
D7
1N5402
10.0
R7
D11
1N5402
10W
2.7
R
9
D10
1N5402
1.00K
R15
D12
1N5402
10W
2.7
R13
D9
1N5402
10W
2.7
R14
J12
4
1000V
500p
C17
1.00K
R17
1.00K
R18
J12
1
1W
18V
DZ1
1000V
500p
C8
200V
.33
C
10
6A
100V
Q1
1
3
2
D8
1N5402
J12
2
10W
2.7
R11
D6
1N5402
1W
12V
DZ2
10W
2.7
R12
1.00K
R16
5W
20
R8
267
R5
50V
0.1
C5
NC
GND
S
V
OUT
IN
OUT
GND
V
S
X2
3
4
7
5
1
6
8
2
4429
GND
+V
GND
J12
3
M17581
INVERTER WELDERS
SCHEMATIC, DARLINGTON DRIVE
BS
4A
5-19-95
3-29-96L
G-14
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Schematic - Darlington Drive Board - Codes 10151 - 10383 - (M17581)
NO
TE:
Linc
oln Elec
tric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty.
Individual Print
ed Circuit Board Components are not available from Lincoln Electric.
This in
f
ormation is provided
for reference only. Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the machine.