March 1999
Part No. 001-2009-600
800W POWER SUPPLY SCHEMATIC (2 OF 2)FIGURE 10-47

10-42

R151
20k
R152
4.7k CR140
U104A
74HC08
TO SYN CIRCUIT CR128/CR121/L101
APPROXIMATELY 100V PEAK
1
23
C138
.001
R176
100
U104B
74HC08
4
56
CR122
R178
2k Q110
3600
Q111
3600
R158
15k
C152
.1R180
7.5k
R179
4.7k
Q112
3600
R181
1k
SYNC
C161
.01
+C160
15
R267
430
+C199
6.8
3
1
2VIN VOUT
GND
R268
4.7k
+C159
6.8
U111
LM317T
+26.5V
1
2,3,4,5,6,7
8VIN VOUT
GND
U105
LM78L05
C131
.1+C132
1
+15V
SOURCE
SYNC PULSE WIDTH
CONTROLLER
SYNC PULSE OUTPUT
BUFFER
+C133
1C134
.1
+5V
SOURCE
U104
R203
2k
Q123
6110
R204
2k
R201
180
C162
.1
Q122
6026
R200
18
R199
18
R198
18
CR124
+26.5V
+C163
2700
R205
10
R206
10
R207
51
R231
180 R208
51
C164
.001
Q124
6026
CR125
CR126
Q125
6352
1
3
2
4
CR127
R209
620 R210
620
R308
0
R232
820
R229
820
C183
270pF
T108
INPUT CURRENT
SENSOR
R227
180
L102
14OUT
7
9
RAMP
I SD
R226
24
C176
.001
R224
0
R225
68 C172
.01
6
C T Q127
3600
Q128
3612 R315
820
R219
470
R218
4.7k
INV1
R221
36k
C175
.22 C173
.0022
3
EA OUT
R220
2k
2
NI
C173
.1
R228
2k
16
V REF
11
I REF
U112 R233
3.3k R234
1k C182
470pF
10GND A
GND
12
13VC
15Vcc
+C180
6.8
C181
.01
+15V
+C178
1
8S S
R223
13k
5R T
+15V BUCK CONTOLLER
+C165
1500
+C166
1500 C167
.01 R215
6.2k
L103
R216
1k
R217
1.2k
+C169
1500 C170
.01
WO 115HIGH CURRENT OUT
WO 107+15V DC OUTPUT
WO 108GROUND
R211
12.4k
R212
2.26k
C220
.1
U116
TL431ID
8CATHODE
7
6
5
ANODE A
ANODE B
NC A
REF
ANODE D
ANODE C
NC B
R214
1k
1
2
3
4
Q126
3612
R213
200 C168
.01
R281
470 1
2
4
65
U119
IL205A
R240
2k
Q130
6110
R241
2k
R238
180
C184
.1
Q129
6026
R237
18
R236
18
R235
18
CR130
+26.5V
+C186
1500
R242
10
R243
10
R244
180
R245
51
C185
.001
Q131
6026
CR131
CR132
Q132
6352
1
3
2
4
CR133
R247
36
R309
0
R269
360
C203
270pF
T109
L104
14OUT
7
9
RAMP
I SD
6
C T
INV1
R258
36k
C194
.22 C193
.0022
3
EA OUT
R256
2k
2
NI
C192
.1
R264
2k
16
V REF
11
I REF
U113
R265
3.3k R266
1k C202
470pF
10GND A
GND
12
13VC
15Vcc
+C200
6.8
C201
.01
+15V
+C198
1
8S S
R259
13k
5R T
+15V BUCK CONTOLLER
+C187
1500 +C188
1500 C189
.01 R253
4.7k
R254
1k
R255
4.3k
WO 109+5V DC OUTPUT
WO 110+5V DC GROUND
R249
3.4k
R250
2.49k
C222
.1
U117
TL431ID
8CATHODE
7
6
5
ANODE A
ANODE B
NC A
REF
ANODE D
ANODE C
NC B
R252
1k
1
2
3
4
Q133
3612
R251
200 C190
.01
R246
470 1
2
4
65
U120
IL205A
C196
.001
R261
24
R260
68
C195
.01
SHUTDOWN
DRIVE
TO U115
+5V
C191
.0047
OVER-VOLTAGE 6V
MAXIMUM
C204
.047
R270
33k
R271
3.3k
L105
CR136
C208
.1+C209
1500
U114
MC33166T
2
5
1
3
OUT
COMP
V FB
GND
Vcc
+C205
1500
4
+26.5V
-5V CONVERTER R284
3.4k
R285
2.49k
C227
.1
U118
TL431ID
8CATHODE
7
6
5
ANODE A
ANODE B
NC A
REF
ANODE D
ANODE C
NC B
R286
1k
1
2
3
4
Q138
3612
R287
200 C211
.01
R303
200 1
2
4
65
U122
IL205A
UNDER-VOLTAGE -6V
MINIMUM
C212
.01
WO 111-5V DC OUTPUT
CR141
CR135
CR129